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* @license MIT\n */\n\nimport { ITerminal, IBuffer } from './Interfaces';\nimport { CircularList } from './utils/CircularList';\n\n/**\n * This class represents a terminal buffer (an internal state of the terminal), where the\n * following information is stored (in high-level):\n * - text content of this particular buffer\n * - cursor position\n * - scroll position\n */\nexport class Buffer implements IBuffer {\n private _lines: CircularList<[number, string, number][]>;\n\n public ydisp: number;\n public ybase: number;\n public y: number;\n public x: number;\n public scrollBottom: number;\n public scrollTop: number;\n public tabs: any;\n public savedY: number;\n public savedX: number;\n\n /**\n * Create a new Buffer.\n * @param {Terminal} _terminal - The terminal the Buffer will belong to\n * @param {number} ydisp - The scroll position of the Buffer in the viewport\n * @param {number} ybase - The scroll position of the y cursor (ybase + y = the y position within the Buffer)\n * @param {number} y - The cursor's y position after ybase\n * @param {number} x - The cursor's x position after ybase\n */\n constructor(\n private _terminal: ITerminal\n ) {\n this.clear();\n }\n\n public get lines(): CircularList<[number, string, number][]> {\n return this._lines;\n }\n\n /**\n * Fills the buffer's viewport with blank lines.\n */\n public fillViewportRows(): void {\n if (this._lines.length === 0) {\n let i = this._terminal.rows;\n while (i--) {\n this.lines.push(this._terminal.blankLine());\n }\n }\n }\n\n /**\n * Clears the buffer to it's initial state, discarding all previous data.\n */\n public clear(): void {\n this.ydisp = 0;\n this.ybase = 0;\n this.y = 0;\n this.x = 0;\n this.scrollBottom = 0;\n this.scrollTop = 0;\n this.tabs = {};\n this._lines = new CircularList<[number, string, number][]>(this._terminal.scrollback);\n this.scrollBottom = this._terminal.rows - 1;\n }\n\n /**\n * Resizes the buffer, adjusting its data accordingly.\n * @param newCols The new number of columns.\n * @param newRows The new number of rows.\n */\n public resize(newCols: number, newRows: number): void {\n // Don't resize the buffer if it's empty and hasn't been used yet.\n if (this._lines.length === 0) {\n return;\n }\n\n // Deal with columns increasing (we don't do anything when columns reduce)\n if (this._terminal.cols < newCols) {\n const ch: [number, string, number] = [this._terminal.defAttr, ' ', 1]; // does xterm use the default attr?\n for (let i = 0; i < this._lines.length; i++) {\n // TODO: This should be removed, with tests setup for the case that was\n // causing the underlying bug, see https://github.com/sourcelair/xterm.js/issues/824\n if (this._lines.get(i) === undefined) {\n this._lines.set(i, this._terminal.blankLine(undefined, undefined, newCols));\n }\n while (this._lines.get(i).length < newCols) {\n this._lines.get(i).push(ch);\n }\n }\n }\n\n // Resize rows in both directions as needed\n let addToY = 0;\n if (this._terminal.rows < newRows) {\n for (let y = this._terminal.rows; y < newRows; y++) {\n if (this._lines.length < newRows + this.ybase) {\n if (this.ybase > 0 && this._lines.length <= this.ybase + this.y + addToY + 1) {\n // There is room above the buffer and there are no empty elements below the line,\n // scroll up\n this.ybase--;\n addToY++;\n if (this.ydisp > 0) {\n // Viewport is at the top of the buffer, must increase downwards\n this.ydisp--;\n }\n } else {\n // Add a blank line if there is no buffer left at the top to scroll to, or if there\n // are blank lines after the cursor\n this._lines.push(this._terminal.blankLine(undefined, undefined, newCols));\n }\n }\n }\n } else { // (this._terminal.rows >= newRows)\n for (let y = this._terminal.rows; y > newRows; y--) {\n if (this._lines.length > newRows + this.ybase) {\n if (this._lines.length > this.ybase + this.y + 1) {\n // The line is a blank line below the cursor, remove it\n this._lines.pop();\n } else {\n // The line is the cursor, scroll down\n this.ybase++;\n this.ydisp++;\n }\n }\n }\n }\n\n // Make sure that the cursor stays on screen\n if (this.y >= newRows) {\n this.y = newRows - 1;\n }\n if (addToY) {\n this.y += addToY;\n }\n\n if (this.x >= newCols) {\n this.x = newCols - 1;\n }\n\n this.scrollTop = 0;\n this.scrollBottom = newRows - 1;\n }\n}\n","/**\n * @license MIT\n */\n\nimport { ITerminal, IBufferSet } from './Interfaces';\nimport { Buffer } from './Buffer';\nimport { EventEmitter } from './EventEmitter';\n\n/**\n * The BufferSet represents the set of two buffers used by xterm terminals (normal and alt) and\n * provides also utilities for working with them.\n */\nexport class BufferSet extends EventEmitter implements IBufferSet {\n private _normal: Buffer;\n private _alt: Buffer;\n private _activeBuffer: Buffer;\n\n /**\n * Create a new BufferSet for the given terminal.\n * @param {Terminal} terminal - The terminal the BufferSet will belong to\n */\n constructor(private _terminal: ITerminal) {\n super();\n this._normal = new Buffer(this._terminal);\n this._normal.fillViewportRows();\n this._alt = new Buffer(this._terminal);\n this._activeBuffer = this._normal;\n }\n\n /**\n * Returns the alt Buffer of the BufferSet\n * @returns {Buffer}\n */\n public get alt(): Buffer {\n return this._alt;\n }\n\n /**\n * Returns the normal Buffer of the BufferSet\n * @returns {Buffer}\n */\n public get active(): Buffer {\n return this._activeBuffer;\n }\n\n /**\n * Returns the currently active Buffer of the BufferSet\n * @returns {Buffer}\n */\n public get normal(): Buffer {\n return this._normal;\n }\n\n /**\n * Sets the normal Buffer of the BufferSet as its currently active Buffer\n */\n public activateNormalBuffer(): void {\n // The alt buffer should always be cleared when we switch to the normal\n // buffer. This frees up memory since the alt buffer should always be new\n // when activated.\n this._alt.clear();\n\n this._activeBuffer = this._normal;\n this.emit('activate', this._normal);\n }\n\n /**\n * Sets the alt Buffer of the BufferSet as its currently active Buffer\n */\n public activateAltBuffer(): void {\n // Since the alt buffer is always cleared when the normal buffer is\n // activated, we want to fill it when switching to it.\n this._alt.fillViewportRows();\n\n this._activeBuffer = this._alt;\n this.emit('activate', this._alt);\n }\n\n /**\n * Resizes both normal and alt buffers, adjusting their data accordingly.\n * @param newCols The new number of columns.\n * @param newRows The new number of rows.\n */\n public resize(newCols: number, newRows: number): void {\n this._normal.resize(newCols, newRows);\n this._alt.resize(newCols, newRows);\n }\n}\n","/**\n * @license MIT\n */\n\n/**\n * The character sets supported by the terminal. These enable several languages\n * to be represented within the terminal with only 8-bit encoding. See ISO 2022\n * for a discussion on character sets. Only VT100 character sets are supported.\n */\nexport const CHARSETS: {[key: string]: {[key: string]: string}} = {};\n\n/**\n * The default character set, US.\n */\nexport const DEFAULT_CHARSET = CHARSETS['B'];\n\n/**\n * DEC Special Character and Line Drawing Set.\n * Reference: http://vt100.net/docs/vt102-ug/table5-13.html\n * A lot of curses apps use this if they see TERM=xterm.\n * testing: echo -e '\\e(0a\\e(B'\n * The xterm output sometimes seems to conflict with the\n * reference above. xterm seems in line with the reference\n * when running vttest however.\n * The table below now uses xterm's output from vttest.\n */\nCHARSETS['0'] = {\n '`': '\\u25c6', // '◆'\n 'a': '\\u2592', // '▒'\n 'b': '\\u0009', // '\\t'\n 'c': '\\u000c', // '\\f'\n 'd': '\\u000d', // '\\r'\n 'e': '\\u000a', // '\\n'\n 'f': '\\u00b0', // '°'\n 'g': '\\u00b1', // '±'\n 'h': '\\u2424', // '\\u2424' (NL)\n 'i': '\\u000b', // '\\v'\n 'j': '\\u2518', // '┘'\n 'k': '\\u2510', // '┐'\n 'l': '\\u250c', // '┌'\n 'm': '\\u2514', // '└'\n 'n': '\\u253c', // '┼'\n 'o': '\\u23ba', // '⎺'\n 'p': '\\u23bb', // '⎻'\n 'q': '\\u2500', // '─'\n 'r': '\\u23bc', // '⎼'\n 's': '\\u23bd', // '⎽'\n 't': '\\u251c', // '├'\n 'u': '\\u2524', // '┤'\n 'v': '\\u2534', // '┴'\n 'w': '\\u252c', // '┬'\n 'x': '\\u2502', // '│'\n 'y': '\\u2264', // '≤'\n 'z': '\\u2265', // '≥'\n '{': '\\u03c0', // 'π'\n '|': '\\u2260', // '≠'\n '}': '\\u00a3', // '£'\n '~': '\\u00b7' // '·'\n};\n\n/**\n * British character set\n * ESC (A\n * Reference: http://vt100.net/docs/vt220-rm/table2-5.html\n */\nCHARSETS['A'] = {\n '#': '£'\n};\n\n/**\n * United States character set\n * ESC (B\n */\nCHARSETS['B'] = null;\n\n/**\n * Dutch character set\n * ESC (4\n * Reference: http://vt100.net/docs/vt220-rm/table2-6.html\n */\nCHARSETS['4'] = {\n '#': '£',\n '@': '¾',\n '[': 'ij',\n '\\\\': '½',\n ']': '|',\n '{': '¨',\n '|': 'f',\n '}': '¼',\n '~': '´'\n};\n\n/**\n * Finnish character set\n * ESC (C or ESC (5\n * Reference: http://vt100.net/docs/vt220-rm/table2-7.html\n */\nCHARSETS['C'] =\nCHARSETS['5'] = {\n '[': 'Ä',\n '\\\\': 'Ö',\n ']': 'Å',\n '^': 'Ü',\n '`': 'é',\n '{': 'ä',\n '|': 'ö',\n '}': 'å',\n '~': 'ü'\n};\n\n/**\n * French character set\n * ESC (R\n * Reference: http://vt100.net/docs/vt220-rm/table2-8.html\n */\nCHARSETS['R'] = {\n '#': '£',\n '@': 'à',\n '[': '°',\n '\\\\': 'ç',\n ']': '§',\n '{': 'é',\n '|': 'ù',\n '}': 'è',\n '~': '¨'\n};\n\n/**\n * French Canadian character set\n * ESC (Q\n * Reference: http://vt100.net/docs/vt220-rm/table2-9.html\n */\nCHARSETS['Q'] = {\n '@': 'à',\n '[': 'â',\n '\\\\': 'ç',\n ']': 'ê',\n '^': 'î',\n '`': 'ô',\n '{': 'é',\n '|': 'ù',\n '}': 'è',\n '~': 'û'\n};\n\n/**\n * German character set\n * ESC (K\n * Reference: http://vt100.net/docs/vt220-rm/table2-10.html\n */\nCHARSETS['K'] = {\n '@': '§',\n '[': 'Ä',\n '\\\\': 'Ö',\n ']': 'Ü',\n '{': 'ä',\n '|': 'ö',\n '}': 'ü',\n '~': 'ß'\n};\n\n/**\n * Italian character set\n * ESC (Y\n * Reference: http://vt100.net/docs/vt220-rm/table2-11.html\n */\nCHARSETS['Y'] = {\n '#': '£',\n '@': '§',\n '[': '°',\n '\\\\': 'ç',\n ']': 'é',\n '`': 'ù',\n '{': 'à',\n '|': 'ò',\n '}': 'è',\n '~': 'ì'\n};\n\n/**\n * Norwegian/Danish character set\n * ESC (E or ESC (6\n * Reference: http://vt100.net/docs/vt220-rm/table2-12.html\n */\nCHARSETS['E'] =\nCHARSETS['6'] = {\n '@': 'Ä',\n '[': 'Æ',\n '\\\\': 'Ø',\n ']': 'Å',\n '^': 'Ü',\n '`': 'ä',\n '{': 'æ',\n '|': 'ø',\n '}': 'å',\n '~': 'ü'\n};\n\n/**\n * Spanish character set\n * ESC (Z\n * Reference: http://vt100.net/docs/vt220-rm/table2-13.html\n */\nCHARSETS['Z'] = {\n '#': '£',\n '@': '§',\n '[': '¡',\n '\\\\': 'Ñ',\n ']': '¿',\n '{': '°',\n '|': 'ñ',\n '}': 'ç'\n};\n\n/**\n * Swedish character set\n * ESC (H or ESC (7\n * Reference: http://vt100.net/docs/vt220-rm/table2-14.html\n */\nCHARSETS['H'] =\nCHARSETS['7'] = {\n '@': 'É',\n '[': 'Ä',\n '\\\\': 'Ö',\n ']': 'Å',\n '^': 'Ü',\n '`': 'é',\n '{': 'ä',\n '|': 'ö',\n '}': 'å',\n '~': 'ü'\n};\n\n/**\n * Swiss character set\n * ESC (=\n * Reference: http://vt100.net/docs/vt220-rm/table2-15.html\n */\nCHARSETS['='] = {\n '#': 'ù',\n '@': 'à',\n '[': 'é',\n '\\\\': 'ç',\n ']': 'ê',\n '^': 'î',\n '_': 'è',\n '`': 'ô',\n '{': 'ä',\n '|': 'ö',\n '}': 'ü',\n '~': 'û'\n};\n","/**\n * @license MIT\n */\n\nimport { ITerminal } from './Interfaces';\n\ninterface IPosition {\n start: number;\n end: number;\n}\n\n/**\n * Encapsulates the logic for handling compositionstart, compositionupdate and compositionend\n * events, displaying the in-progress composition to the UI and forwarding the final composition\n * to the handler.\n */\nexport class CompositionHelper {\n /**\n * Whether input composition is currently happening, eg. via a mobile keyboard, speech input or\n * IME. This variable determines whether the compositionText should be displayed on the UI.\n */\n private isComposing: boolean;\n\n /**\n * The position within the input textarea's value of the current composition.\n */\n private compositionPosition: IPosition;\n\n /**\n * Whether a composition is in the process of being sent, setting this to false will cancel any\n * in-progress composition.\n */\n private isSendingComposition: boolean;\n\n /**\n * Creates a new CompositionHelper.\n * @param textarea The textarea that xterm uses for input.\n * @param compositionView The element to display the in-progress composition in.\n * @param terminal The Terminal to forward the finished composition to.\n */\n constructor(\n private textarea: HTMLTextAreaElement,\n private compositionView: HTMLElement,\n private terminal: ITerminal\n ) {\n this.isComposing = false;\n this.isSendingComposition = false;\n this.compositionPosition = { start: null, end: null };\n }\n\n /**\n * Handles the compositionstart event, activating the composition view.\n */\n public compositionstart() {\n this.isComposing = true;\n this.compositionPosition.start = this.textarea.value.length;\n this.compositionView.textContent = '';\n this.compositionView.classList.add('active');\n }\n\n /**\n * Handles the compositionupdate event, updating the composition view.\n * @param {CompositionEvent} ev The event.\n */\n public compositionupdate(ev: CompositionEvent) {\n this.compositionView.textContent = ev.data;\n this.updateCompositionElements();\n setTimeout(() => {\n this.compositionPosition.end = this.textarea.value.length;\n }, 0);\n }\n\n /**\n * Handles the compositionend event, hiding the composition view and sending the composition to\n * the handler.\n */\n public compositionend() {\n this.finalizeComposition(true);\n }\n\n /**\n * Handles the keydown event, routing any necessary events to the CompositionHelper functions.\n * @param ev The keydown event.\n * @return Whether the Terminal should continue processing the keydown event.\n */\n public keydown(ev: KeyboardEvent) {\n if (this.isComposing || this.isSendingComposition) {\n if (ev.keyCode === 229) {\n // Continue composing if the keyCode is the \"composition character\"\n return false;\n } else if (ev.keyCode === 16 || ev.keyCode === 17 || ev.keyCode === 18) {\n // Continue composing if the keyCode is a modifier key\n return false;\n } else {\n // Finish composition immediately. This is mainly here for the case where enter is\n // pressed and the handler needs to be triggered before the command is executed.\n this.finalizeComposition(false);\n }\n }\n\n if (ev.keyCode === 229) {\n // If the \"composition character\" is used but gets to this point it means a non-composition\n // character (eg. numbers and punctuation) was pressed when the IME was active.\n this.handleAnyTextareaChanges();\n return false;\n }\n\n return true;\n }\n\n /**\n * Finalizes the composition, resuming regular input actions. This is called when a composition\n * is ending.\n * @param waitForPropogation Whether to wait for events to propogate before sending\n * the input. This should be false if a non-composition keystroke is entered before the\n * compositionend event is triggered, such as enter, so that the composition is send before\n * the command is executed.\n */\n private finalizeComposition(waitForPropogation: boolean) {\n this.compositionView.classList.remove('active');\n this.isComposing = false;\n this.clearTextareaPosition();\n\n if (!waitForPropogation) {\n // Cancel any delayed composition send requests and send the input immediately.\n this.isSendingComposition = false;\n const input = this.textarea.value.substring(this.compositionPosition.start, this.compositionPosition.end);\n this.terminal.handler(input);\n } else {\n // Make a deep copy of the composition position here as a new compositionstart event may\n // fire before the setTimeout executes.\n const currentCompositionPosition = {\n start: this.compositionPosition.start,\n end: this.compositionPosition.end,\n };\n\n // Since composition* events happen before the changes take place in the textarea on most\n // browsers, use a setTimeout with 0ms time to allow the native compositionend event to\n // complete. This ensures the correct character is retrieved, this solution was used\n // because:\n // - The compositionend event's data property is unreliable, at least on Chromium\n // - The last compositionupdate event's data property does not always accurately describe\n // the character, a counter example being Korean where an ending consonsant can move to\n // the following character if the following input is a vowel.\n this.isSendingComposition = true;\n setTimeout(() => {\n // Ensure that the input has not already been sent\n if (this.isSendingComposition) {\n this.isSendingComposition = false;\n let input;\n if (this.isComposing) {\n // Use the end position to get the string if a new composition has started.\n input = this.textarea.value.substring(currentCompositionPosition.start, currentCompositionPosition.end);\n } else {\n // Don't use the end position here in order to pick up any characters after the\n // composition has finished, for example when typing a non-composition character\n // (eg. 2) after a composition character.\n input = this.textarea.value.substring(currentCompositionPosition.start);\n }\n this.terminal.handler(input);\n }\n }, 0);\n }\n }\n\n /**\n * Apply any changes made to the textarea after the current event chain is allowed to complete.\n * This should be called when not currently composing but a keydown event with the \"composition\n * character\" (229) is triggered, in order to allow non-composition text to be entered when an\n * IME is active.\n */\n private handleAnyTextareaChanges() {\n const oldValue = this.textarea.value;\n setTimeout(() => {\n // Ignore if a composition has started since the timeout\n if (!this.isComposing) {\n const newValue = this.textarea.value;\n const diff = newValue.replace(oldValue, '');\n if (diff.length > 0) {\n this.terminal.handler(diff);\n }\n }\n }, 0);\n }\n\n /**\n * Positions the composition view on top of the cursor and the textarea just below it (so the\n * IME helper dialog is positioned correctly).\n * @param dontRecurse Whether to use setTimeout to recursively trigger another update, this is\n * necessary as the IME events across browsers are not consistently triggered.\n */\n public updateCompositionElements(dontRecurse?: boolean) {\n if (!this.isComposing) {\n return;\n }\n const cursor = <HTMLElement>this.terminal.element.querySelector('.terminal-cursor');\n if (cursor) {\n // Take .xterm-rows offsetTop into account as well in case it's positioned absolutely within\n // the .xterm element.\n const xtermRows = <HTMLElement>this.terminal.element.querySelector('.xterm-rows');\n const cursorTop = xtermRows.offsetTop + cursor.offsetTop;\n\n this.compositionView.style.left = cursor.offsetLeft + 'px';\n this.compositionView.style.top = cursorTop + 'px';\n this.compositionView.style.height = cursor.offsetHeight + 'px';\n this.compositionView.style.lineHeight = cursor.offsetHeight + 'px';\n // Sync the textarea to the exact position of the composition view so the IME knows where the\n // text is.\n const compositionViewBounds = this.compositionView.getBoundingClientRect();\n this.textarea.style.left = cursor.offsetLeft + 'px';\n this.textarea.style.top = cursorTop + 'px';\n this.textarea.style.width = compositionViewBounds.width + 'px';\n this.textarea.style.height = compositionViewBounds.height + 'px';\n this.textarea.style.lineHeight = compositionViewBounds.height + 'px';\n }\n if (!dontRecurse) {\n setTimeout(() => this.updateCompositionElements(true), 0);\n }\n };\n\n /**\n * Clears the textarea's position so that the cursor does not blink on IE.\n * @private\n */\n private clearTextareaPosition() {\n this.textarea.style.left = '';\n this.textarea.style.top = '';\n };\n}\n","/**\n * @license MIT\n */\n\n/**\n * C0 control codes\n * See = https://en.wikipedia.org/wiki/C0_and_C1_control_codes\n */\nexport namespace C0 {\n /** Null (Caret = ^@, C = \\0) */\n export const NUL = '\\x00';\n /** Start of Heading (Caret = ^A) */\n export const SOH = '\\x01';\n /** Start of Text (Caret = ^B) */\n export const STX = '\\x02';\n /** End of Text (Caret = ^C) */\n export const ETX = '\\x03';\n /** End of Transmission (Caret = ^D) */\n export const EOT = '\\x04';\n /** Enquiry (Caret = ^E) */\n export const ENQ = '\\x05';\n /** Acknowledge (Caret = ^F) */\n export const ACK = '\\x06';\n /** Bell (Caret = ^G, C = \\a) */\n export const BEL = '\\x07';\n /** Backspace (Caret = ^H, C = \\b) */\n export const BS = '\\x08';\n /** Character Tabulation, Horizontal Tabulation (Caret = ^I, C = \\t) */\n export const HT = '\\x09';\n /** Line Feed (Caret = ^J, C = \\n) */\n export const LF = '\\x0a';\n /** Line Tabulation, Vertical Tabulation (Caret = ^K, C = \\v) */\n export const VT = '\\x0b';\n /** Form Feed (Caret = ^L, C = \\f) */\n export const FF = '\\x0c';\n /** Carriage Return (Caret = ^M, C = \\r) */\n export const CR = '\\x0d';\n /** Shift Out (Caret = ^N) */\n export const SO = '\\x0e';\n /** Shift In (Caret = ^O) */\n export const SI = '\\x0f';\n /** Data Link Escape (Caret = ^P) */\n export const DLE = '\\x10';\n /** Device Control One (XON) (Caret = ^Q) */\n export const DC1 = '\\x11';\n /** Device Control Two (Caret = ^R) */\n export const DC2 = '\\x12';\n /** Device Control Three (XOFF) (Caret = ^S) */\n export const DC3 = '\\x13';\n /** Device Control Four (Caret = ^T) */\n export const DC4 = '\\x14';\n /** Negative Acknowledge (Caret = ^U) */\n export const NAK = '\\x15';\n /** Synchronous Idle (Caret = ^V) */\n export const SYN = '\\x16';\n /** End of Transmission Block (Caret = ^W) */\n export const ETB = '\\x17';\n /** Cancel (Caret = ^X) */\n export const CAN = '\\x18';\n /** End of Medium (Caret = ^Y) */\n export const EM = '\\x19';\n /** Substitute (Caret = ^Z) */\n export const SUB = '\\x1a';\n /** Escape (Caret = ^[, C = \\e) */\n export const ESC = '\\x1b';\n /** File Separator (Caret = ^\\) */\n export const FS = '\\x1c';\n /** Group Separator (Caret = ^]) */\n export const GS = '\\x1d';\n /** Record Separator (Caret = ^^) */\n export const RS = '\\x1e';\n /** Unit Separator (Caret = ^_) */\n export const US = '\\x1f';\n /** Space */\n export const SP = '\\x20';\n /** Delete (Caret = ^?) */\n export const DEL = '\\x7f';\n};\n","/**\n * @license MIT\n */\n\nimport { IEventEmitter } from './Interfaces';\n\ninterface ListenerType {\n (): void;\n listener?: () => void;\n};\n\nexport class EventEmitter implements IEventEmitter {\n private _events: {[type: string]: ListenerType[]};\n\n constructor() {\n // Restore the previous events if available, this will happen if the\n // constructor is called multiple times on the same object (terminal reset).\n this._events = this._events || {};\n }\n\n public on(type, listener): void {\n this._events[type] = this._events[type] || [];\n this._events[type].push(listener);\n }\n\n public off(type, listener): void {\n if (!this._events[type]) {\n return;\n }\n\n let obj = this._events[type];\n let i = obj.length;\n\n while (i--) {\n if (obj[i] === listener || obj[i].listener === listener) {\n obj.splice(i, 1);\n return;\n }\n }\n }\n\n public removeAllListeners(type): void {\n if (this._events[type]) {\n delete this._events[type];\n }\n }\n\n public once(type, listener): any {\n function on() {\n let args = Array.prototype.slice.call(arguments);\n this.off(type, on);\n return listener.apply(this, args);\n }\n (<any>on).listener = listener;\n return this.on(type, on);\n }\n\n public emit(type: string, ...args: any[]): void {\n if (!this._events[type]) {\n return;\n }\n let obj = this._events[type];\n for (let i = 0; i < obj.length; i++) {\n obj[i].apply(this, args);\n }\n }\n\n public listeners(type): ListenerType[] {\n return this._events[type] || [];\n }\n}\n","/**\n * @license MIT\n */\n\nimport { IInputHandler, ITerminal } from './Interfaces';\nimport { C0 } from './EscapeSequences';\nimport { DEFAULT_CHARSET } from './Charsets';\n\n/**\n * The terminal's standard implementation of IInputHandler, this handles all\n * input from the Parser.\n *\n * Refer to http://invisible-island.net/xterm/ctlseqs/ctlseqs.html to understand\n * each function's header comment.\n */\nexport class InputHandler implements IInputHandler {\n // TODO: We want to type _terminal when it's pulled into TS\n constructor(private _terminal: any) { }\n\n public addChar(char: string, code: number): void {\n if (char >= ' ') {\n // calculate print space\n // expensive call, therefore we save width in line buffer\n const ch_width = wcwidth(code);\n\n if (this._terminal.charset && this._terminal.charset[char]) {\n char = this._terminal.charset[char];\n }\n\n let row = this._terminal.buffer.y + this._terminal.buffer.ybase;\n\n // insert combining char in last cell\n // FIXME: needs handling after cursor jumps\n if (!ch_width && this._terminal.buffer.x) {\n // dont overflow left\n if (this._terminal.buffer.lines.get(row)[this._terminal.buffer.x - 1]) {\n if (!this._terminal.buffer.lines.get(row)[this._terminal.buffer.x - 1][2]) {\n\n // found empty cell after fullwidth, need to go 2 cells back\n if (this._terminal.buffer.lines.get(row)[this._terminal.buffer.x - 2])\n this._terminal.buffer.lines.get(row)[this._terminal.buffer.x - 2][1] += char;\n\n } else {\n this._terminal.buffer.lines.get(row)[this._terminal.buffer.x - 1][1] += char;\n }\n this._terminal.updateRange(this._terminal.buffer.y);\n }\n return;\n }\n\n // goto next line if ch would overflow\n // TODO: needs a global min terminal width of 2\n if (this._terminal.buffer.x + ch_width - 1 >= this._terminal.cols) {\n // autowrap - DECAWM\n if (this._terminal.wraparoundMode) {\n this._terminal.buffer.x = 0;\n this._terminal.buffer.y++;\n if (this._terminal.buffer.y > this._terminal.buffer.scrollBottom) {\n this._terminal.buffer.y--;\n this._terminal.scroll(true);\n } else {\n // The line already exists (eg. the initial viewport), mark it as a\n // wrapped line\n this._terminal.buffer.lines.get(this._terminal.buffer.y).isWrapped = true;\n }\n } else {\n if (ch_width === 2) // FIXME: check for xterm behavior\n return;\n }\n }\n row = this._terminal.buffer.y + this._terminal.buffer.ybase;\n\n // insert mode: move characters to right\n if (this._terminal.insertMode) {\n // do this twice for a fullwidth char\n for (let moves = 0; moves < ch_width; ++moves) {\n // remove last cell, if it's width is 0\n // we have to adjust the second last cell as well\n const removed = this._terminal.buffer.lines.get(this._terminal.buffer.y + this._terminal.buffer.ybase).pop();\n if (removed[2] === 0\n && this._terminal.buffer.lines.get(row)[this._terminal.cols - 2]\n && this._terminal.buffer.lines.get(row)[this._terminal.cols - 2][2] === 2) {\n this._terminal.buffer.lines.get(row)[this._terminal.cols - 2] = [this._terminal.curAttr, ' ', 1];\n }\n\n // insert empty cell at cursor\n this._terminal.buffer.lines.get(row).splice(this._terminal.buffer.x, 0, [this._terminal.curAttr, ' ', 1]);\n }\n }\n\n this._terminal.buffer.lines.get(row)[this._terminal.buffer.x] = [this._terminal.curAttr, char, ch_width];\n this._terminal.buffer.x++;\n this._terminal.updateRange(this._terminal.buffer.y);\n\n // fullwidth char - set next cell width to zero and advance cursor\n if (ch_width === 2) {\n this._terminal.buffer.lines.get(row)[this._terminal.buffer.x] = [this._terminal.curAttr, '', 0];\n this._terminal.buffer.x++;\n }\n }\n }\n\n /**\n * BEL\n * Bell (Ctrl-G).\n */\n public bell(): void {\n if (!this._terminal.visualBell) {\n return;\n }\n this._terminal.element.style.borderColor = 'white';\n setTimeout(() => this._terminal.element.style.borderColor = '', 10);\n if (this._terminal.popOnBell) {\n this._terminal.focus();\n }\n }\n\n /**\n * LF\n * Line Feed or New Line (NL). (LF is Ctrl-J).\n */\n public lineFeed(): void {\n if (this._terminal.convertEol) {\n this._terminal.buffer.x = 0;\n }\n this._terminal.buffer.y++;\n if (this._terminal.buffer.y > this._terminal.buffer.scrollBottom) {\n this._terminal.buffer.y--;\n this._terminal.scroll();\n }\n // If the end of the line is hit, prevent this action from wrapping around to the next line.\n if (this._terminal.buffer.x >= this._terminal.cols) {\n this._terminal.buffer.x--;\n }\n /**\n * This event is emitted whenever the terminal outputs a LF or NL.\n *\n * @event lineFeed\n */\n this._terminal.emit('lineFeed');\n }\n\n /**\n * CR\n * Carriage Return (Ctrl-M).\n */\n public carriageReturn(): void {\n this._terminal.buffer.x = 0;\n }\n\n /**\n * BS\n * Backspace (Ctrl-H).\n */\n public backspace(): void {\n if (this._terminal.buffer.x > 0) {\n this._terminal.buffer.x--;\n }\n }\n\n /**\n * TAB\n * Horizontal Tab (HT) (Ctrl-I).\n */\n public tab(): void {\n this._terminal.buffer.x = this._terminal.nextStop();\n }\n\n /**\n * SO\n * Shift Out (Ctrl-N) -> Switch to Alternate Character Set. This invokes the\n * G1 character set.\n */\n public shiftOut(): void {\n this._terminal.setgLevel(1);\n }\n\n /**\n * SI\n * Shift In (Ctrl-O) -> Switch to Standard Character Set. This invokes the G0\n * character set (the default).\n */\n public shiftIn(): void {\n this._terminal.setgLevel(0);\n }\n\n /**\n * CSI Ps @\n * Insert Ps (Blank) Character(s) (default = 1) (ICH).\n */\n public insertChars(params: number[]): void {\n let param, row, j, ch;\n\n param = params[0];\n if (param < 1) param = 1;\n\n row = this._terminal.buffer.y + this._terminal.buffer.ybase;\n j = this._terminal.buffer.x;\n ch = [this._terminal.eraseAttr(), ' ', 1]; // xterm\n\n while (param-- && j < this._terminal.cols) {\n this._terminal.buffer.lines.get(row).splice(j++, 0, ch);\n this._terminal.buffer.lines.get(row).pop();\n }\n }\n\n /**\n * CSI Ps A\n * Cursor Up Ps Times (default = 1) (CUU).\n */\n public cursorUp(params: number[]): void {\n let param = params[0];\n if (param < 1) {\n param = 1;\n }\n this._terminal.buffer.y -= param;\n if (this._terminal.buffer.y < 0) {\n this._terminal.buffer.y = 0;\n }\n }\n\n /**\n * CSI Ps B\n * Cursor Down Ps Times (default = 1) (CUD).\n */\n public cursorDown(params: number[]) {\n let param = params[0];\n if (param < 1) {\n param = 1;\n }\n this._terminal.buffer.y += param;\n if (this._terminal.buffer.y >= this._terminal.rows) {\n this._terminal.buffer.y = this._terminal.rows - 1;\n }\n // If the end of the line is hit, prevent this action from wrapping around to the next line.\n if (this._terminal.buffer.x >= this._terminal.cols) {\n this._terminal.buffer.x--;\n }\n }\n\n /**\n * CSI Ps C\n * Cursor Forward Ps Times (default = 1) (CUF).\n */\n public cursorForward(params: number[]) {\n let param = params[0];\n if (param < 1) {\n param = 1;\n }\n this._terminal.buffer.x += param;\n if (this._terminal.buffer.x >= this._terminal.cols) {\n this._terminal.buffer.x = this._terminal.cols - 1;\n }\n }\n\n /**\n * CSI Ps D\n * Cursor Backward Ps Times (default = 1) (CUB).\n */\n public cursorBackward(params: number[]) {\n let param = params[0];\n if (param < 1) {\n param = 1;\n }\n // If the end of the line is hit, prevent this action from wrapping around to the next line.\n if (this._terminal.buffer.x >= this._terminal.cols) {\n this._terminal.buffer.x--;\n }\n this._terminal.buffer.x -= param;\n if (this._terminal.buffer.x < 0) {\n this._terminal.buffer.x = 0;\n }\n }\n\n /**\n * CSI Ps E\n * Cursor Next Line Ps Times (default = 1) (CNL).\n * same as CSI Ps B ?\n */\n public cursorNextLine(params: number[]): void {\n let param = params[0];\n if (param < 1) {\n param = 1;\n }\n this._terminal.buffer.y += param;\n if (this._terminal.buffer.y >= this._terminal.rows) {\n this._terminal.buffer.y = this._terminal.rows - 1;\n }\n this._terminal.buffer.x = 0;\n }\n\n\n /**\n * CSI Ps F\n * Cursor Preceding Line Ps Times (default = 1) (CNL).\n * reuse CSI Ps A ?\n */\n public cursorPrecedingLine(params: number[]): void {\n let param = params[0];\n if (param < 1) {\n param = 1;\n }\n this._terminal.buffer.y -= param;\n if (this._terminal.buffer.y < 0) {\n this._terminal.buffer.y = 0;\n }\n this._terminal.buffer.x = 0;\n }\n\n\n /**\n * CSI Ps G\n * Cursor Character Absolute [column] (default = [row,1]) (CHA).\n */\n public cursorCharAbsolute(params: number[]): void {\n let param = params[0];\n if (param < 1) {\n param = 1;\n }\n this._terminal.buffer.x = param - 1;\n }\n\n /**\n * CSI Ps ; Ps H\n * Cursor Position [row;column] (default = [1,1]) (CUP).\n */\n public cursorPosition(params: number[]): void {\n let row, col;\n\n row = params[0] - 1;\n\n if (params.length >= 2) {\n col = params[1] - 1;\n } else {\n col = 0;\n }\n\n if (row < 0) {\n row = 0;\n } else if (row >= this._terminal.rows) {\n row = this._terminal.rows - 1;\n }\n\n if (col < 0) {\n col = 0;\n } else if (col >= this._terminal.cols) {\n col = this._terminal.cols - 1;\n }\n\n this._terminal.buffer.x = col;\n this._terminal.buffer.y = row;\n }\n\n /**\n * CSI Ps I\n * Cursor Forward Tabulation Ps tab stops (default = 1) (CHT).\n */\n public cursorForwardTab(params: number[]): void {\n let param = params[0] || 1;\n while (param--) {\n this._terminal.buffer.x = this._terminal.nextStop();\n }\n }\n\n /**\n * CSI Ps J Erase in Display (ED).\n * Ps = 0 -> Erase Below (default).\n * Ps = 1 -> Erase Above.\n * Ps = 2 -> Erase All.\n * Ps = 3 -> Erase Saved Lines (xterm).\n * CSI ? Ps J\n * Erase in Display (DECSED).\n * Ps = 0 -> Selective Erase Below (default).\n * Ps = 1 -> Selective Erase Above.\n * Ps = 2 -> Selective Erase All.\n */\n public eraseInDisplay(params: number[]): void {\n let j;\n switch (params[0]) {\n case 0:\n this._terminal.eraseRight(this._terminal.buffer.x, this._terminal.buffer.y);\n j = this._terminal.buffer.y + 1;\n for (; j < this._terminal.rows; j++) {\n this._terminal.eraseLine(j);\n }\n break;\n case 1:\n this._terminal.eraseLeft(this._terminal.buffer.x, this._terminal.buffer.y);\n j = this._terminal.buffer.y;\n while (j--) {\n this._terminal.eraseLine(j);\n }\n break;\n case 2:\n j = this._terminal.rows;\n while (j--) this._terminal.eraseLine(j);\n break;\n case 3:\n // Clear scrollback (everything not in viewport)\n const scrollBackSize = this._terminal.buffer.lines.length - this._terminal.rows;\n if (scrollBackSize > 0) {\n this._terminal.buffer.lines.trimStart(scrollBackSize);\n this._terminal.buffer.ybase = Math.max(this._terminal.buffer.ybase - scrollBackSize, 0);\n this._terminal.buffer.ydisp = Math.max(this._terminal.buffer.ydisp - scrollBackSize, 0);\n // Force a scroll event to refresh viewport\n this._terminal.emit('scroll', 0);\n }\n break;\n }\n }\n\n /**\n * CSI Ps K Erase in Line (EL).\n * Ps = 0 -> Erase to Right (default).\n * Ps = 1 -> Erase to Left.\n * Ps = 2 -> Erase All.\n * CSI ? Ps K\n * Erase in Line (DECSEL).\n * Ps = 0 -> Selective Erase to Right (default).\n * Ps = 1 -> Selective Erase to Left.\n * Ps = 2 -> Selective Erase All.\n */\n public eraseInLine(params: number[]): void {\n switch (params[0]) {\n case 0:\n this._terminal.eraseRight(this._terminal.buffer.x, this._terminal.buffer.y);\n break;\n case 1:\n this._terminal.eraseLeft(this._terminal.buffer.x, this._terminal.buffer.y);\n break;\n case 2:\n this._terminal.eraseLine(this._terminal.buffer.y);\n break;\n }\n }\n\n /**\n * CSI Ps L\n * Insert Ps Line(s) (default = 1) (IL).\n */\n public insertLines(params: number[]): void {\n let param, row, j;\n\n param = params[0];\n if (param < 1) {\n param = 1;\n }\n row = this._terminal.buffer.y + this._terminal.buffer.ybase;\n\n j = this._terminal.rows - 1 - this._terminal.buffer.scrollBottom;\n j = this._terminal.rows - 1 + this._terminal.buffer.ybase - j + 1;\n\n while (param--) {\n if (this._terminal.buffer.lines.length === this._terminal.buffer.lines.maxLength) {\n // Trim the start of lines to make room for the new line\n this._terminal.buffer.lines.trimStart(1);\n this._terminal.buffer.ybase--;\n this._terminal.buffer.ydisp--;\n row--;\n j--;\n }\n // test: echo -e '\\e[44m\\e[1L\\e[0m'\n // blankLine(true) - xterm/linux behavior\n this._terminal.buffer.lines.splice(row, 0, this._terminal.blankLine(true));\n this._terminal.buffer.lines.splice(j, 1);\n }\n\n // this.maxRange();\n this._terminal.updateRange(this._terminal.buffer.y);\n this._terminal.updateRange(this._terminal.buffer.scrollBottom);\n }\n\n /**\n * CSI Ps M\n * Delete Ps Line(s) (default = 1) (DL).\n */\n public deleteLines(params: number[]): void {\n let param, row, j;\n\n param = params[0];\n if (param < 1) {\n param = 1;\n }\n row = this._terminal.buffer.y + this._terminal.buffer.ybase;\n\n j = this._terminal.rows - 1 - this._terminal.buffer.scrollBottom;\n j = this._terminal.rows - 1 + this._terminal.buffer.ybase - j;\n\n while (param--) {\n if (this._terminal.buffer.lines.length === this._terminal.buffer.lines.maxLength) {\n // Trim the start of lines to make room for the new line\n this._terminal.buffer.lines.trimStart(1);\n this._terminal.buffer.ybase -= 1;\n this._terminal.buffer.ydisp -= 1;\n }\n // test: echo -e '\\e[44m\\e[1M\\e[0m'\n // blankLine(true) - xterm/linux behavior\n this._terminal.buffer.lines.splice(j + 1, 0, this._terminal.blankLine(true));\n this._terminal.buffer.lines.splice(row, 1);\n }\n\n // this.maxRange();\n this._terminal.updateRange(this._terminal.buffer.y);\n this._terminal.updateRange(this._terminal.buffer.scrollBottom);\n }\n\n /**\n * CSI Ps P\n * Delete Ps Character(s) (default = 1) (DCH).\n */\n public deleteChars(params: number[]): void {\n let param, row, ch;\n\n param = params[0];\n if (param < 1) {\n param = 1;\n }\n\n row = this._terminal.buffer.y + this._terminal.buffer.ybase;\n ch = [this._terminal.eraseAttr(), ' ', 1]; // xterm\n\n while (param--) {\n this._terminal.buffer.lines.get(row).splice(this._terminal.buffer.x, 1);\n this._terminal.buffer.lines.get(row).push(ch);\n }\n }\n\n /**\n * CSI Ps S Scroll up Ps lines (default = 1) (SU).\n */\n public scrollUp(params: number[]): void {\n let param = params[0] || 1;\n while (param--) {\n this._terminal.buffer.lines.splice(this._terminal.buffer.ybase + this._terminal.buffer.scrollTop, 1);\n this._terminal.buffer.lines.splice(this._terminal.buffer.ybase + this._terminal.buffer.scrollBottom, 0, this._terminal.blankLine());\n }\n // this.maxRange();\n this._terminal.updateRange(this._terminal.buffer.scrollTop);\n this._terminal.updateRange(this._terminal.buffer.scrollBottom);\n }\n\n /**\n * CSI Ps T Scroll down Ps lines (default = 1) (SD).\n */\n public scrollDown(params: number[]): void {\n let param = params[0] || 1;\n while (param--) {\n this._terminal.buffer.lines.splice(this._terminal.buffer.ybase + this._terminal.buffer.scrollBottom, 1);\n this._terminal.buffer.lines.splice(this._terminal.buffer.ybase + this._terminal.buffer.scrollTop, 0, this._terminal.blankLine());\n }\n // this.maxRange();\n this._terminal.updateRange(this._terminal.buffer.scrollTop);\n this._terminal.updateRange(this._terminal.buffer.scrollBottom);\n }\n\n /**\n * CSI Ps X\n * Erase Ps Character(s) (default = 1) (ECH).\n */\n public eraseChars(params: number[]): void {\n let param, row, j, ch;\n\n param = params[0];\n if (param < 1) {\n param = 1;\n }\n\n row = this._terminal.buffer.y + this._terminal.buffer.ybase;\n j = this._terminal.buffer.x;\n ch = [this._terminal.eraseAttr(), ' ', 1]; // xterm\n\n while (param-- && j < this._terminal.cols) {\n this._terminal.buffer.lines.get(row)[j++] = ch;\n }\n }\n\n /**\n * CSI Ps Z Cursor Backward Tabulation Ps tab stops (default = 1) (CBT).\n */\n public cursorBackwardTab(params: number[]): void {\n let param = params[0] || 1;\n while (param--) {\n this._terminal.buffer.x = this._terminal.prevStop();\n }\n }\n\n /**\n * CSI Pm ` Character Position Absolute\n * [column] (default = [row,1]) (HPA).\n */\n public charPosAbsolute(params: number[]): void {\n let param = params[0];\n if (param < 1) {\n param = 1;\n }\n this._terminal.buffer.x = param - 1;\n if (this._terminal.buffer.x >= this._terminal.cols) {\n this._terminal.buffer.x = this._terminal.cols - 1;\n }\n }\n\n /**\n * CSI Pm a Character Position Relative\n * [columns] (default = [row,col+1]) (HPR)\n * reuse CSI Ps C ?\n */\n public HPositionRelative(params: number[]): void {\n let param = params[0];\n if (param < 1) {\n param = 1;\n }\n this._terminal.buffer.x += param;\n if (this._terminal.buffer.x >= this._terminal.cols) {\n this._terminal.buffer.x = this._terminal.cols - 1;\n }\n }\n\n /**\n * CSI Ps b Repeat the preceding graphic character Ps times (REP).\n */\n public repeatPrecedingCharacter(params: number[]): void {\n let param = params[0] || 1\n , line = this._terminal.buffer.lines.get(this._terminal.buffer.ybase + this._terminal.buffer.y)\n , ch = line[this._terminal.buffer.x - 1] || [this._terminal.defAttr, ' ', 1];\n\n while (param--) {\n line[this._terminal.buffer.x++] = ch;\n }\n }\n\n /**\n * CSI Ps c Send Device Attributes (Primary DA).\n * Ps = 0 or omitted -> request attributes from terminal. The\n * response depends on the decTerminalID resource setting.\n * -> CSI ? 1 ; 2 c (``VT100 with Advanced Video Option'')\n * -> CSI ? 1 ; 0 c (``VT101 with No Options'')\n * -> CSI ? 6 c (``VT102'')\n * -> CSI ? 6 0 ; 1 ; 2 ; 6 ; 8 ; 9 ; 1 5 ; c (``VT220'')\n * The VT100-style response parameters do not mean anything by\n * themselves. VT220 parameters do, telling the host what fea-\n * tures the terminal supports:\n * Ps = 1 -> 132-columns.\n * Ps = 2 -> Printer.\n * Ps = 6 -> Selective erase.\n * Ps = 8 -> User-defined keys.\n * Ps = 9 -> National replacement character sets.\n * Ps = 1 5 -> Technical characters.\n * Ps = 2 2 -> ANSI color, e.g., VT525.\n * Ps = 2 9 -> ANSI text locator (i.e., DEC Locator mode).\n * CSI > Ps c\n * Send Device Attributes (Secondary DA).\n * Ps = 0 or omitted -> request the terminal's identification\n * code. The response depends on the decTerminalID resource set-\n * ting. It should apply only to VT220 and up, but xterm extends\n * this to VT100.\n * -> CSI > Pp ; Pv ; Pc c\n * where Pp denotes the terminal type\n * Pp = 0 -> ``VT100''.\n * Pp = 1 -> ``VT220''.\n * and Pv is the firmware version (for xterm, this was originally\n * the XFree86 patch number, starting with 95). In a DEC termi-\n * nal, Pc indicates the ROM cartridge registration number and is\n * always zero.\n * More information:\n * xterm/charproc.c - line 2012, for more information.\n * vim responds with ^[[?0c or ^[[?1c after the terminal's response (?)\n */\n public sendDeviceAttributes(params: number[]): void {\n if (params[0] > 0) {\n return;\n }\n\n if (!this._terminal.prefix) {\n if (this._terminal.is('xterm') || this._terminal.is('rxvt-unicode') || this._terminal.is('screen')) {\n this._terminal.send(C0.ESC + '[?1;2c');\n } else if (this._terminal.is('linux')) {\n this._terminal.send(C0.ESC + '[?6c');\n }\n } else if (this._terminal.prefix === '>') {\n // xterm and urxvt\n // seem to spit this\n // out around ~370 times (?).\n if (this._terminal.is('xterm')) {\n this._terminal.send(C0.ESC + '[>0;276;0c');\n } else if (this._terminal.is('rxvt-unicode')) {\n this._terminal.send(C0.ESC + '[>85;95;0c');\n } else if (this._terminal.is('linux')) {\n // not supported by linux console.\n // linux console echoes parameters.\n this._terminal.send(params[0] + 'c');\n } else if (this._terminal.is('screen')) {\n this._terminal.send(C0.ESC + '[>83;40003;0c');\n }\n }\n }\n\n /**\n * CSI Pm d Vertical Position Absolute (VPA)\n * [row] (default = [1,column])\n */\n public linePosAbsolute(params: number[]): void {\n let param = params[0];\n if (param < 1) {\n param = 1;\n }\n this._terminal.buffer.y = param - 1;\n if (this._terminal.buffer.y >= this._terminal.rows) {\n this._terminal.buffer.y = this._terminal.rows - 1;\n }\n }\n\n /**\n * CSI Pm e Vertical Position Relative (VPR)\n * [rows] (default = [row+1,column])\n * reuse CSI Ps B ?\n */\n public VPositionRelative(params: number[]): void {\n let param = params[0];\n if (param < 1) {\n param = 1;\n }\n this._terminal.buffer.y += param;\n if (this._terminal.buffer.y >= this._terminal.rows) {\n this._terminal.buffer.y = this._terminal.rows - 1;\n }\n // If the end of the line is hit, prevent this action from wrapping around to the next line.\n if (this._terminal.buffer.x >= this._terminal.cols) {\n this._terminal.buffer.x--;\n }\n }\n\n /**\n * CSI Ps ; Ps f\n * Horizontal and Vertical Position [row;column] (default =\n * [1,1]) (HVP).\n */\n public HVPosition(params: number[]): void {\n if (params[0] < 1) params[0] = 1;\n if (params[1] < 1) params[1] = 1;\n\n this._terminal.buffer.y = params[0] - 1;\n if (this._terminal.buffer.y >= this._terminal.rows) {\n this._terminal.buffer.y = this._terminal.rows - 1;\n }\n\n this._terminal.buffer.x = params[1] - 1;\n if (this._terminal.buffer.x >= this._terminal.cols) {\n this._terminal.buffer.x = this._terminal.cols - 1;\n }\n }\n\n /**\n * CSI Ps g Tab Clear (TBC).\n * Ps = 0 -> Clear Current Column (default).\n * Ps = 3 -> Clear All.\n * Potentially:\n * Ps = 2 -> Clear Stops on Line.\n * http://vt100.net/annarbor/aaa-ug/section6.html\n */\n public tabClear(params: number[]): void {\n let param = params[0];\n if (param <= 0) {\n delete this._terminal.buffer.tabs[this._terminal.buffer.x];\n } else if (param === 3) {\n this._terminal.buffer.tabs = {};\n }\n }\n\n /**\n * CSI Pm h Set Mode (SM).\n * Ps = 2 -> Keyboard Action Mode (AM).\n * Ps = 4 -> Insert Mode (IRM).\n * Ps = 1 2 -> Send/receive (SRM).\n * Ps = 2 0 -> Automatic Newline (LNM).\n * CSI ? Pm h\n * DEC Private Mode Set (DECSET).\n * Ps = 1 -> Application Cursor Keys (DECCKM).\n * Ps = 2 -> Designate USASCII for character sets G0-G3\n * (DECANM), and set VT100 mode.\n * Ps = 3 -> 132 Column Mode (DECCOLM).\n * Ps = 4 -> Smooth (Slow) Scroll (DECSCLM).\n * Ps = 5 -> Reverse Video (DECSCNM).\n * Ps = 6 -> Origin Mode (DECOM).\n * Ps = 7 -> Wraparound Mode (DECAWM).\n * Ps = 8 -> Auto-repeat Keys (DECARM).\n * Ps = 9 -> Send Mouse X & Y on button press. See the sec-\n * tion Mouse Tracking.\n * Ps = 1 0 -> Show toolbar (rxvt).\n * Ps = 1 2 -> Start Blinking Cursor (att610).\n * Ps = 1 8 -> Print form feed (DECPFF).\n * Ps = 1 9 -> Set print extent to full screen (DECPEX).\n * Ps = 2 5 -> Show Cursor (DECTCEM).\n * Ps = 3 0 -> Show scrollbar (rxvt).\n * Ps = 3 5 -> Enable font-shifting functions (rxvt).\n * Ps = 3 8 -> Enter Tektronix Mode (DECTEK).\n * Ps = 4 0 -> Allow 80 -> 132 Mode.\n * Ps = 4 1 -> more(1) fix (see curses resource).\n * Ps = 4 2 -> Enable Nation Replacement Character sets (DECN-\n * RCM).\n * Ps = 4 4 -> Turn On Margin Bell.\n * Ps = 4 5 -> Reverse-wraparound Mode.\n * Ps = 4 6 -> Start Logging. This is normally disabled by a\n * compile-time option.\n * Ps = 4 7 -> Use Alternate Screen Buffer. (This may be dis-\n * abled by the titeInhibit resource).\n * Ps = 6 6 -> Application keypad (DECNKM).\n * Ps = 6 7 -> Backarrow key sends backspace (DECBKM).\n * Ps = 1 0 0 0 -> Send Mouse X & Y on button press and\n * release. See the section Mouse Tracking.\n * Ps = 1 0 0 1 -> Use Hilite Mouse Tracking.\n * Ps = 1 0 0 2 -> Use Cell Motion Mouse Tracking.\n * Ps = 1 0 0 3 -> Use All Motion Mouse Tracking.\n * Ps = 1 0 0 4 -> Send FocusIn/FocusOut events.\n * Ps = 1 0 0 5 -> Enable Extended Mouse Mode.\n * Ps = 1 0 1 0 -> Scroll to bottom on tty output (rxvt).\n * Ps = 1 0 1 1 -> Scroll to bottom on key press (rxvt).\n * Ps = 1 0 3 4 -> Interpret \"meta\" key, sets eighth bit.\n * (enables the eightBitInput resource).\n * Ps = 1 0 3 5 -> Enable special modifiers for Alt and Num-\n * Lock keys. (This enables the numLock resource).\n * Ps = 1 0 3 6 -> Send ESC when Meta modifies a key. (This\n * enables the metaSendsEscape resource).\n * Ps = 1 0 3 7 -> Send DEL from the editing-keypad Delete\n * key.\n * Ps = 1 0 3 9 -> Send ESC when Alt modifies a key. (This\n * enables the altSendsEscape resource).\n * Ps = 1 0 4 0 -> Keep selection even if not highlighted.\n * (This enables the keepSelection resource).\n * Ps = 1 0 4 1 -> Use the CLIPBOARD selection. (This enables\n * the selectToClipboard resource).\n * Ps = 1 0 4 2 -> Enable Urgency window manager hint when\n * Control-G is received. (This enables the bellIsUrgent\n * resource).\n * Ps = 1 0 4 3 -> Enable raising of the window when Control-G\n * is received. (enables the popOnBell resource).\n * Ps = 1 0 4 7 -> Use Alternate Screen Buffer. (This may be\n * disabled by the titeInhibit resource).\n * Ps = 1 0 4 8 -> Save cursor as in DECSC. (This may be dis-\n * abled by the titeInhibit resource).\n * Ps = 1 0 4 9 -> Save cursor as in DECSC and use Alternate\n * Screen Buffer, clearing it first. (This may be disabled by\n * the titeInhibit resource). This combines the effects of the 1\n * 0 4 7 and 1 0 4 8 modes. Use this with terminfo-based\n * applications rather than the 4 7 mode.\n * Ps = 1 0 5 0 -> Set terminfo/termcap function-key mode.\n * Ps = 1 0 5 1 -> Set Sun function-key mode.\n * Ps = 1 0 5 2 -> Set HP function-key mode.\n * Ps = 1 0 5 3 -> Set SCO function-key mode.\n * Ps = 1 0 6 0 -> Set legacy keyboard emulation (X11R6).\n * Ps = 1 0 6 1 -> Set VT220 keyboard emulation.\n * Ps = 2 0 0 4 -> Set bracketed paste mode.\n * Modes:\n * http: *vt100.net/docs/vt220-rm/chapter4.html\n */\n public setMode(params: number[]): void {\n if (params.length > 1) {\n for (let i = 0; i < params.length; i++) {\n this.setMode([params[i]]);\n }\n\n return;\n }\n\n if (!this._terminal.prefix) {\n switch (params[0]) {\n case 4:\n this._terminal.insertMode = true;\n break;\n case 20:\n // this._terminal.convertEol = true;\n break;\n }\n } else if (this._terminal.prefix === '?') {\n switch (params[0]) {\n case 1:\n this._terminal.applicationCursor = true;\n break;\n case 2:\n this._terminal.setgCharset(0, DEFAULT_CHARSET);\n this._terminal.setgCharset(1, DEFAULT_CHARSET);\n this._terminal.setgCharset(2, DEFAULT_CHARSET);\n this._terminal.setgCharset(3, DEFAULT_CHARSET);\n // set VT100 mode here\n break;\n case 3: // 132 col mode\n this._terminal.savedCols = this._terminal.cols;\n this._terminal.resize(132, this._terminal.rows);\n break;\n case 6:\n this._terminal.originMode = true;\n break;\n case 7:\n this._terminal.wraparoundMode = true;\n break;\n case 12:\n // this.cursorBlink = true;\n break;\n case 66:\n this._terminal.log('Serial port requested application keypad.');\n this._terminal.applicationKeypad = true;\n this._terminal.viewport.syncScrollArea();\n break;\n case 9: // X10 Mouse\n // no release, no motion, no wheel, no modifiers.\n case 1000: // vt200 mouse\n // no motion.\n // no modifiers, except control on the wheel.\n case 1002: // button event mouse\n case 1003: // any event mouse\n // any event - sends motion events,\n // even if there is no button held down.\n\n // TODO: Why are params[0] compares nested within a switch for params[0]?\n\n this._terminal.x10Mouse = params[0] === 9;\n this._terminal.vt200Mouse = params[0] === 1000;\n this._terminal.normalMouse = params[0] > 1000;\n this._terminal.mouseEvents = true;\n this._terminal.element.classList.add('enable-mouse-events');\n this._terminal.selectionManager.disable();\n this._terminal.log('Binding to mouse events.');\n break;\n case 1004: // send focusin/focusout events\n // focusin: ^[[I\n // focusout: ^[[O\n this._terminal.sendFocus = true;\n break;\n case 1005: // utf8 ext mode mouse\n this._terminal.utfMouse = true;\n // for wide terminals\n // simply encodes large values as utf8 characters\n break;\n case 1006: // sgr ext mode mouse\n this._terminal.sgrMouse = true;\n // for wide terminals\n // does not add 32 to fields\n // press: ^[[<b;x;yM\n // release: ^[[<b;x;ym\n break;\n case 1015: // urxvt ext mode mouse\n this._terminal.urxvtMouse = true;\n // for wide terminals\n // numbers for fields\n // press: ^[[b;x;yM\n // motion: ^[[b;x;yT\n break;\n case 25: // show cursor\n this._terminal.cursorHidden = false;\n break;\n case 1049: // alt screen buffer cursor\n // TODO: Not sure if we need to save/restore after switching the buffer\n // this.saveCursor(params);\n // FALL-THROUGH\n case 47: // alt screen buffer\n case 1047: // alt screen buffer\n this._terminal.buffers.activateAltBuffer();\n this._terminal.viewport.syncScrollArea();\n this._terminal.showCursor();\n break;\n }\n }\n }\n\n /**\n * CSI Pm l Reset Mode (RM).\n * Ps = 2 -> Keyboard Action Mode (AM).\n * Ps = 4 -> Replace Mode (IRM).\n * Ps = 1 2 -> Send/receive (SRM).\n * Ps = 2 0 -> Normal Linefeed (LNM).\n * CSI ? Pm l\n * DEC Private Mode Reset (DECRST).\n * Ps = 1 -> Normal Cursor Keys (DECCKM).\n * Ps = 2 -> Designate VT52 mode (DECANM).\n * Ps = 3 -> 80 Column Mode (DECCOLM).\n * Ps = 4 -> Jump (Fast) Scroll (DECSCLM).\n * Ps = 5 -> Normal Video (DECSCNM).\n * Ps = 6 -> Normal Cursor Mode (DECOM).\n * Ps = 7 -> No Wraparound Mode (DECAWM).\n * Ps = 8 -> No Auto-repeat Keys (DECARM).\n * Ps = 9 -> Don't send Mouse X & Y on button press.\n * Ps = 1 0 -> Hide toolbar (rxvt).\n * Ps = 1 2 -> Stop Blinking Cursor (att610).\n * Ps = 1 8 -> Don't print form feed (DECPFF).\n * Ps = 1 9 -> Limit print to scrolling region (DECPEX).\n * Ps = 2 5 -> Hide Cursor (DECTCEM).\n * Ps = 3 0 -> Don't show scrollbar (rxvt).\n * Ps = 3 5 -> Disable font-shifting functions (rxvt).\n * Ps = 4 0 -> Disallow 80 -> 132 Mode.\n * Ps = 4 1 -> No more(1) fix (see curses resource).\n * Ps = 4 2 -> Disable Nation Replacement Character sets (DEC-\n * NRCM).\n * Ps = 4 4 -> Turn Off Margin Bell.\n * Ps = 4 5 -> No Reverse-wraparound Mode.\n * Ps = 4 6 -> Stop Logging. (This is normally disabled by a\n * compile-time option).\n * Ps = 4 7 -> Use Normal Screen Buffer.\n * Ps = 6 6 -> Numeric keypad (DECNKM).\n * Ps = 6 7 -> Backarrow key sends delete (DECBKM).\n * Ps = 1 0 0 0 -> Don't send Mouse X & Y on button press and\n * release. See the section Mouse Tracking.\n * Ps = 1 0 0 1 -> Don't use Hilite Mouse Tracking.\n * Ps = 1 0 0 2 -> Don't use Cell Motion Mouse Tracking.\n * Ps = 1 0 0 3 -> Don't use All Motion Mouse Tracking.\n * Ps = 1 0 0 4 -> Don't send FocusIn/FocusOut events.\n * Ps = 1 0 0 5 -> Disable Extended Mouse Mode.\n * Ps = 1 0 1 0 -> Don't scroll to bottom on tty output\n * (rxvt).\n * Ps = 1 0 1 1 -> Don't scroll to bottom on key press (rxvt).\n * Ps = 1 0 3 4 -> Don't interpret \"meta\" key. (This disables\n * the eightBitInput resource).\n * Ps = 1 0 3 5 -> Disable special modifiers for Alt and Num-\n * Lock keys. (This disables the numLock resource).\n * Ps = 1 0 3 6 -> Don't send ESC when Meta modifies a key.\n * (This disables the metaSendsEscape resource).\n * Ps = 1 0 3 7 -> Send VT220 Remove from the editing-keypad\n * Delete key.\n * Ps = 1 0 3 9 -> Don't send ESC when Alt modifies a key.\n * (This disables the altSendsEscape resource).\n * Ps = 1 0 4 0 -> Do not keep selection when not highlighted.\n * (This disables the keepSelection resource).\n * Ps = 1 0 4 1 -> Use the PRIMARY selection. (This disables\n * the selectToClipboard resource).\n * Ps = 1 0 4 2 -> Disable Urgency window manager hint when\n * Control-G is received. (This disables the bellIsUrgent\n * resource).\n * Ps = 1 0 4 3 -> Disable raising of the window when Control-\n * G is received. (This disables the popOnBell resource).\n * Ps = 1 0 4 7 -> Use Normal Screen Buffer, clearing screen\n * first if in the Alternate Screen. (This may be disabled by\n * the titeInhibit resource).\n * Ps = 1 0 4 8 -> Restore cursor as in DECRC. (This may be\n * disabled by the titeInhibit resource).\n * Ps = 1 0 4 9 -> Use Normal Screen Buffer and restore cursor\n * as in DECRC. (This may be disabled by the titeInhibit\n * resource). This combines the effects of the 1 0 4 7 and 1 0\n * 4 8 modes. Use this with terminfo-based applications rather\n * than the 4 7 mode.\n * Ps = 1 0 5 0 -> Reset terminfo/termcap function-key mode.\n * Ps = 1 0 5 1 -> Reset Sun function-key mode.\n * Ps = 1 0 5 2 -> Reset HP function-key mode.\n * Ps = 1 0 5 3 -> Reset SCO function-key mode.\n * Ps = 1 0 6 0 -> Reset legacy keyboard emulation (X11R6).\n * Ps = 1 0 6 1 -> Reset keyboard emulation to Sun/PC style.\n * Ps = 2 0 0 4 -> Reset bracketed paste mode.\n */\n public resetMode(params: number[]): void {\n if (params.length > 1) {\n for (let i = 0; i < params.length; i++) {\n this.resetMode([params[i]]);\n }\n\n return;\n }\n\n if (!this._terminal.prefix) {\n switch (params[0]) {\n case 4:\n this._terminal.insertMode = false;\n break;\n case 20:\n // this._terminal.convertEol = false;\n break;\n }\n } else if (this._terminal.prefix === '?') {\n switch (params[0]) {\n case 1:\n this._terminal.applicationCursor = false;\n break;\n case 3:\n if (this._terminal.cols === 132 && this._terminal.savedCols) {\n this._terminal.resize(this._terminal.savedCols, this._terminal.rows);\n }\n delete this._terminal.savedCols;\n break;\n case 6:\n this._terminal.originMode = false;\n break;\n case 7:\n this._terminal.wraparoundMode = false;\n break;\n case 12:\n // this.cursorBlink = false;\n break;\n case 66:\n this._terminal.log('Switching back to normal keypad.');\n this._terminal.applicationKeypad = false;\n this._terminal.viewport.syncScrollArea();\n break;\n case 9: // X10 Mouse\n case 1000: // vt200 mouse\n case 1002: // button event mouse\n case 1003: // any event mouse\n this._terminal.x10Mouse = false;\n this._terminal.vt200Mouse = false;\n this._terminal.normalMouse = false;\n this._terminal.mouseEvents = false;\n this._terminal.element.classList.remove('enable-mouse-events');\n this._terminal.selectionManager.enable();\n break;\n case 1004: // send focusin/focusout events\n this._terminal.sendFocus = false;\n break;\n case 1005: // utf8 ext mode mouse\n this._terminal.utfMouse = false;\n break;\n case 1006: // sgr ext mode mouse\n this._terminal.sgrMouse = false;\n break;\n case 1015: // urxvt ext mode mouse\n this._terminal.urxvtMouse = false;\n break;\n case 25: // hide cursor\n this._terminal.cursorHidden = true;\n break;\n case 1049: // alt screen buffer cursor\n // FALL-THROUGH\n case 47: // normal screen buffer\n case 1047: // normal screen buffer - clearing it first\n // Ensure the selection manager has the correct buffer\n this._terminal.buffers.activateNormalBuffer();\n // TODO: Not sure if we need to save/restore after switching the buffer\n // if (params[0] === 1049) {\n // this.restoreCursor(params);\n // }\n this._terminal.selectionManager.setBuffer(this._terminal.buffer.lines);\n this._terminal.refresh(0, this._terminal.rows - 1);\n this._terminal.viewport.syncScrollArea();\n this._terminal.showCursor();\n break;\n }\n }\n }\n\n /**\n * CSI Pm m Character Attributes (SGR).\n * Ps = 0 -> Normal (default).\n * Ps = 1 -> Bold.\n * Ps = 4 -> Underlined.\n * Ps = 5 -> Blink (appears as Bold).\n * Ps = 7 -> Inverse.\n * Ps = 8 -> Invisible, i.e., hidden (VT300).\n * Ps = 2 2 -> Normal (neither bold nor faint).\n * Ps = 2 4 -> Not underlined.\n * Ps = 2 5 -> Steady (not blinking).\n * Ps = 2 7 -> Positive (not inverse).\n * Ps = 2 8 -> Visible, i.e., not hidden (VT300).\n * Ps = 3 0 -> Set foreground color to Black.\n * Ps = 3 1 -> Set foreground color to Red.\n * Ps = 3 2 -> Set foreground color to Green.\n * Ps = 3 3 -> Set foreground color to Yellow.\n * Ps = 3 4 -> Set foreground color to Blue.\n * Ps = 3 5 -> Set foreground color to Magenta.\n * Ps = 3 6 -> Set foreground color to Cyan.\n * Ps = 3 7 -> Set foreground color to White.\n * Ps = 3 9 -> Set foreground color to default (original).\n * Ps = 4 0 -> Set background color to Black.\n * Ps = 4 1 -> Set background color to Red.\n * Ps = 4 2 -> Set background color to Green.\n * Ps = 4 3 -> Set background color to Yellow.\n * Ps = 4 4 -> Set background color to Blue.\n * Ps = 4 5 -> Set background color to Magenta.\n * Ps = 4 6 -> Set background color to Cyan.\n * Ps = 4 7 -> Set background color to White.\n * Ps = 4 9 -> Set background color to default (original).\n *\n * If 16-color support is compiled, the following apply. Assume\n * that xterm's resources are set so that the ISO color codes are\n * the first 8 of a set of 16. Then the aixterm colors are the\n * bright versions of the ISO colors:\n * Ps = 9 0 -> Set foreground color to Black.\n * Ps = 9 1 -> Set foreground color to Red.\n * Ps = 9 2 -> Set foreground color to Green.\n * Ps = 9 3 -> Set foreground color to Yellow.\n * Ps = 9 4 -> Set foreground color to Blue.\n * Ps = 9 5 -> Set foreground color to Magenta.\n * Ps = 9 6 -> Set foreground color to Cyan.\n * Ps = 9 7 -> Set foreground color to White.\n * Ps = 1 0 0 -> Set background color to Black.\n * Ps = 1 0 1 -> Set background color to Red.\n * Ps = 1 0 2 -> Set background color to Green.\n * Ps = 1 0 3 -> Set background color to Yellow.\n * Ps = 1 0 4 -> Set background color to Blue.\n * Ps = 1 0 5 -> Set background color to Magenta.\n * Ps = 1 0 6 -> Set background color to Cyan.\n * Ps = 1 0 7 -> Set background color to White.\n *\n * If xterm is compiled with the 16-color support disabled, it\n * supports the following, from rxvt:\n * Ps = 1 0 0 -> Set foreground and background color to\n * default.\n *\n * If 88- or 256-color support is compiled, the following apply.\n * Ps = 3 8 ; 5 ; Ps -> Set foreground color to the second\n * Ps.\n * Ps = 4 8 ; 5 ; Ps -> Set background color to the second\n * Ps.\n */\n public charAttributes(params: number[]): void {\n // Optimize a single SGR0.\n if (params.length === 1 && params[0] === 0) {\n this._terminal.curAttr = this._terminal.defAttr;\n return;\n }\n\n let l = params.length\n , i = 0\n , flags = this._terminal.curAttr >> 18\n , fg = (this._terminal.curAttr >> 9) & 0x1ff\n , bg = this._terminal.curAttr & 0x1ff\n , p;\n\n for (; i < l; i++) {\n p = params[i];\n if (p >= 30 && p <= 37) {\n // fg color 8\n fg = p - 30;\n } else if (p >= 40 && p <= 47) {\n // bg color 8\n bg = p - 40;\n } else if (p >= 90 && p <= 97) {\n // fg color 16\n p += 8;\n fg = p - 90;\n } else if (p >= 100 && p <= 107) {\n // bg color 16\n p += 8;\n bg = p - 100;\n } else if (p === 0) {\n // default\n flags = this._terminal.defAttr >> 18;\n fg = (this._terminal.defAttr >> 9) & 0x1ff;\n bg = this._terminal.defAttr & 0x1ff;\n // flags = 0;\n // fg = 0x1ff;\n // bg = 0x1ff;\n } else if (p === 1) {\n // bold text\n flags |= 1;\n } else if (p === 4) {\n // underlined text\n flags |= 2;\n } else if (p === 5) {\n // blink\n flags |= 4;\n } else if (p === 7) {\n // inverse and positive\n // test with: echo -e '\\e[31m\\e[42mhello\\e[7mworld\\e[27mhi\\e[m'\n flags |= 8;\n } else if (p === 8) {\n // invisible\n flags |= 16;\n } else if (p === 22) {\n // not bold\n flags &= ~1;\n } else if (p === 24) {\n // not underlined\n flags &= ~2;\n } else if (p === 25) {\n // not blink\n flags &= ~4;\n } else if (p === 27) {\n // not inverse\n flags &= ~8;\n } else if (p === 28) {\n // not invisible\n flags &= ~16;\n } else if (p === 39) {\n // reset fg\n fg = (this._terminal.defAttr >> 9) & 0x1ff;\n } else if (p === 49) {\n // reset bg\n bg = this._terminal.defAttr & 0x1ff;\n } else if (p === 38) {\n // fg color 256\n if (params[i + 1] === 2) {\n i += 2;\n fg = this._terminal.matchColor(\n params[i] & 0xff,\n params[i + 1] & 0xff,\n params[i + 2] & 0xff);\n if (fg === -1) fg = 0x1ff;\n i += 2;\n } else if (params[i + 1] === 5) {\n i += 2;\n p = params[i] & 0xff;\n fg = p;\n }\n } else if (p === 48) {\n // bg color 256\n if (params[i + 1] === 2) {\n i += 2;\n bg = this._terminal.matchColor(\n params[i] & 0xff,\n params[i + 1] & 0xff,\n params[i + 2] & 0xff);\n if (bg === -1) bg = 0x1ff;\n i += 2;\n } else if (params[i + 1] === 5) {\n i += 2;\n p = params[i] & 0xff;\n bg = p;\n }\n } else if (p === 100) {\n // reset fg/bg\n fg = (this._terminal.defAttr >> 9) & 0x1ff;\n bg = this._terminal.defAttr & 0x1ff;\n } else {\n this._terminal.error('Unknown SGR attribute: %d.', p);\n }\n }\n\n this._terminal.curAttr = (flags << 18) | (fg << 9) | bg;\n }\n\n /**\n * CSI Ps n Device Status Report (DSR).\n * Ps = 5 -> Status Report. Result (``OK'') is\n * CSI 0 n\n * Ps = 6 -> Report Cursor Position (CPR) [row;column].\n * Result is\n * CSI r ; c R\n * CSI ? Ps n\n * Device Status Report (DSR, DEC-specific).\n * Ps = 6 -> Report Cursor Position (CPR) [row;column] as CSI\n * ? r ; c R (assumes page is zero).\n * Ps = 1 5 -> Report Printer status as CSI ? 1 0 n (ready).\n * or CSI ? 1 1 n (not ready).\n * Ps = 2 5 -> Report UDK status as CSI ? 2 0 n (unlocked)\n * or CSI ? 2 1 n (locked).\n * Ps = 2 6 -> Report Keyboard status as\n * CSI ? 2 7 ; 1 ; 0 ; 0 n (North American).\n * The last two parameters apply to VT400 & up, and denote key-\n * board ready and LK01 respectively.\n * Ps = 5 3 -> Report Locator status as\n * CSI ? 5 3 n Locator available, if compiled-in, or\n * CSI ? 5 0 n No Locator, if not.\n */\n public deviceStatus(params: number[]): void {\n if (!this._terminal.prefix) {\n switch (params[0]) {\n case 5:\n // status report\n this._terminal.send(C0.ESC + '[0n');\n break;\n case 6:\n // cursor position\n this._terminal.send(C0.ESC + '['\n + (this._terminal.buffer.y + 1)\n + ';'\n + (this._terminal.buffer.x + 1)\n + 'R');\n break;\n }\n } else if (this._terminal.prefix === '?') {\n // modern xterm doesnt seem to\n // respond to any of these except ?6, 6, and 5\n switch (params[0]) {\n case 6:\n // cursor position\n this._terminal.send(C0.ESC + '[?'\n + (this._terminal.buffer.y + 1)\n + ';'\n + (this._terminal.buffer.x + 1)\n + 'R');\n break;\n case 15:\n // no printer\n // this.send(C0.ESC + '[?11n');\n break;\n case 25:\n // dont support user defined keys\n // this.send(C0.ESC + '[?21n');\n break;\n case 26:\n // north american keyboard\n // this.send(C0.ESC + '[?27;1;0;0n');\n break;\n case 53:\n // no dec locator/mouse\n // this.send(C0.ESC + '[?50n');\n break;\n }\n }\n }\n\n /**\n * CSI ! p Soft terminal reset (DECSTR).\n * http://vt100.net/docs/vt220-rm/table4-10.html\n */\n public softReset(params: number[]): void {\n this._terminal.cursorHidden = false;\n this._terminal.insertMode = false;\n this._terminal.originMode = false;\n this._terminal.wraparoundMode = true; // defaults: xterm - true, vt100 - false\n this._terminal.applicationKeypad = false; // ?\n this._terminal.viewport.syncScrollArea();\n this._terminal.applicationCursor = false;\n this._terminal.buffer.scrollTop = 0;\n this._terminal.buffer.scrollBottom = this._terminal.rows - 1;\n this._terminal.curAttr = this._terminal.defAttr;\n this._terminal.buffer.x = this._terminal.buffer.y = 0; // ?\n this._terminal.charset = null;\n this._terminal.glevel = 0; // ??\n this._terminal.charsets = [null]; // ??\n }\n\n /**\n * CSI Ps SP q Set cursor style (DECSCUSR, VT520).\n * Ps = 0 -> blinking block.\n * Ps = 1 -> blinking block (default).\n * Ps = 2 -> steady block.\n * Ps = 3 -> blinking underline.\n * Ps = 4 -> steady underline.\n * Ps = 5 -> blinking bar (xterm).\n * Ps = 6 -> steady bar (xterm).\n */\n public setCursorStyle(params?: number[]): void {\n const param = params[0] < 1 ? 1 : params[0];\n switch (param) {\n case 1:\n case 2:\n this._terminal.setOption('cursorStyle', 'block');\n break;\n case 3:\n case 4:\n this._terminal.setOption('cursorStyle', 'underline');\n break;\n case 5:\n case 6:\n this._terminal.setOption('cursorStyle', 'bar');\n break;\n }\n const isBlinking = param % 2 === 1;\n this._terminal.setOption('cursorBlink', isBlinking);\n }\n\n /**\n * CSI Ps ; Ps r\n * Set Scrolling Region [top;bottom] (default = full size of win-\n * dow) (DECSTBM).\n * CSI ? Pm r\n */\n public setScrollRegion(params: number[]): void {\n if (this._terminal.prefix) return;\n this._terminal.buffer.scrollTop = (params[0] || 1) - 1;\n this._terminal.buffer.scrollBottom = (params[1] && params[1] <= this._terminal.rows ? params[1] : this._terminal.rows) - 1;\n this._terminal.buffer.x = 0;\n this._terminal.buffer.y = 0;\n }\n\n\n /**\n * CSI s\n * Save cursor (ANSI.SYS).\n */\n public saveCursor(params: number[]): void {\n this._terminal.buffer.savedX = this._terminal.buffer.x;\n this._terminal.buffer.savedY = this._terminal.buffer.y;\n }\n\n\n /**\n * CSI u\n * Restore cursor (ANSI.SYS).\n */\n public restoreCursor(params: number[]): void {\n this._terminal.buffer.x = this._terminal.buffer.savedX || 0;\n this._terminal.buffer.y = this._terminal.buffer.savedY || 0;\n }\n}\n\nexport const wcwidth = (function(opts) {\n // extracted from https://www.cl.cam.ac.uk/%7Emgk25/ucs/wcwidth.c\n // combining characters\n const COMBINING_BMP = [\n [0x0300, 0x036F], [0x0483, 0x0486], [0x0488, 0x0489],\n [0x0591, 0x05BD], [0x05BF, 0x05BF], [0x05C1, 0x05C2],\n [0x05C4, 0x05C5], [0x05C7, 0x05C7], [0x0600, 0x0603],\n [0x0610, 0x0615], [0x064B, 0x065E], [0x0670, 0x0670],\n [0x06D6, 0x06E4], [0x06E7, 0x06E8], [0x06EA, 0x06ED],\n [0x070F, 0x070F], [0x0711, 0x0711], [0x0730, 0x074A],\n [0x07A6, 0x07B0], [0x07EB, 0x07F3], [0x0901, 0x0902],\n [0x093C, 0x093C], [0x0941, 0x0948], [0x094D, 0x094D],\n [0x0951, 0x0954], [0x0962, 0x0963], [0x0981, 0x0981],\n [0x09BC, 0x09BC], [0x09C1, 0x09C4], [0x09CD, 0x09CD],\n [0x09E2, 0x09E3], [0x0A01, 0x0A02], [0x0A3C, 0x0A3C],\n [0x0A41, 0x0A42], [0x0A47, 0x0A48], [0x0A4B, 0x0A4D],\n [0x0A70, 0x0A71], [0x0A81, 0x0A82], [0x0ABC, 0x0ABC],\n [0x0AC1, 0x0AC5], [0x0AC7, 0x0AC8], [0x0ACD, 0x0ACD],\n [0x0AE2, 0x0AE3], [0x0B01, 0x0B01], [0x0B3C, 0x0B3C],\n [0x0B3F, 0x0B3F], [0x0B41, 0x0B43], [0x0B4D, 0x0B4D],\n [0x0B56, 0x0B56], [0x0B82, 0x0B82], [0x0BC0, 0x0BC0],\n [0x0BCD, 0x0BCD], [0x0C3E, 0x0C40], [0x0C46, 0x0C48],\n [0x0C4A, 0x0C4D], [0x0C55, 0x0C56], [0x0CBC, 0x0CBC],\n [0x0CBF, 0x0CBF], [0x0CC6, 0x0CC6], [0x0CCC, 0x0CCD],\n [0x0CE2, 0x0CE3], [0x0D41, 0x0D43], [0x0D4D, 0x0D4D],\n [0x0DCA, 0x0DCA], [0x0DD2, 0x0DD4], [0x0DD6, 0x0DD6],\n [0x0E31, 0x0E31], [0x0E34, 0x0E3A], [0x0E47, 0x0E4E],\n [0x0EB1, 0x0EB1], [0x0EB4, 0x0EB9], [0x0EBB, 0x0EBC],\n [0x0EC8, 0x0ECD], [0x0F18, 0x0F19], [0x0F35, 0x0F35],\n [0x0F37, 0x0F37], [0x0F39, 0x0F39], [0x0F71, 0x0F7E],\n [0x0F80, 0x0F84], [0x0F86, 0x0F87], [0x0F90, 0x0F97],\n [0x0F99, 0x0FBC], [0x0FC6, 0x0FC6], [0x102D, 0x1030],\n [0x1032, 0x1032], [0x1036, 0x1037], [0x1039, 0x1039],\n [0x1058, 0x1059], [0x1160, 0x11FF], [0x135F, 0x135F],\n [0x1712, 0x1714], [0x1732, 0x1734], [0x1752, 0x1753],\n [0x1772, 0x1773], [0x17B4, 0x17B5], [0x17B7, 0x17BD],\n [0x17C6, 0x17C6], [0x17C9, 0x17D3], [0x17DD, 0x17DD],\n [0x180B, 0x180D], [0x18A9, 0x18A9], [0x1920, 0x1922],\n [0x1927, 0x1928], [0x1932, 0x1932], [0x1939, 0x193B],\n [0x1A17, 0x1A18], [0x1B00, 0x1B03], [0x1B34, 0x1B34],\n [0x1B36, 0x1B3A], [0x1B3C, 0x1B3C], [0x1B42, 0x1B42],\n [0x1B6B, 0x1B73], [0x1DC0, 0x1DCA], [0x1DFE, 0x1DFF],\n [0x200B, 0x200F], [0x202A, 0x202E], [0x2060, 0x2063],\n [0x206A, 0x206F], [0x20D0, 0x20EF], [0x302A, 0x302F],\n [0x3099, 0x309A], [0xA806, 0xA806], [0xA80B, 0xA80B],\n [0xA825, 0xA826], [0xFB1E, 0xFB1E], [0xFE00, 0xFE0F],\n [0xFE20, 0xFE23], [0xFEFF, 0xFEFF], [0xFFF9, 0xFFFB],\n ];\n const COMBINING_HIGH = [\n [0x10A01, 0x10A03], [0x10A05, 0x10A06], [0x10A0C, 0x10A0F],\n [0x10A38, 0x10A3A], [0x10A3F, 0x10A3F], [0x1D167, 0x1D169],\n [0x1D173, 0x1D182], [0x1D185, 0x1D18B], [0x1D1AA, 0x1D1AD],\n [0x1D242, 0x1D244], [0xE0001, 0xE0001], [0xE0020, 0xE007F],\n [0xE0100, 0xE01EF]\n ];\n // binary search\n function bisearch(ucs, data) {\n let min = 0;\n let max = data.length - 1;\n let mid;\n if (ucs < data[0][0] || ucs > data[max][1])\n return false;\n while (max >= min) {\n mid = (min + max) >> 1;\n if (ucs > data[mid][1])\n min = mid + 1;\n else if (ucs < data[mid][0])\n max = mid - 1;\n else\n return true;\n }\n return false;\n }\n function wcwidthBMP(ucs) {\n // test for 8-bit control characters\n if (ucs === 0)\n return opts.nul;\n if (ucs < 32 || (ucs >= 0x7f && ucs < 0xa0))\n return opts.control;\n // binary search in table of non-spacing characters\n if (bisearch(ucs, COMBINING_BMP))\n return 0;\n // if we arrive here, ucs is not a combining or C0/C1 control character\n if (isWideBMP(ucs)) {\n return 2;\n }\n return 1;\n }\n function isWideBMP(ucs) {\n return (\n ucs >= 0x1100 && (\n ucs <= 0x115f || // Hangul Jamo init. consonants\n ucs === 0x2329 ||\n ucs === 0x232a ||\n (ucs >= 0x2e80 && ucs <= 0xa4cf && ucs !== 0x303f) || // CJK..Yi\n (ucs >= 0xac00 && ucs <= 0xd7a3) || // Hangul Syllables\n (ucs >= 0xf900 && ucs <= 0xfaff) || // CJK Compat Ideographs\n (ucs >= 0xfe10 && ucs <= 0xfe19) || // Vertical forms\n (ucs >= 0xfe30 && ucs <= 0xfe6f) || // CJK Compat Forms\n (ucs >= 0xff00 && ucs <= 0xff60) || // Fullwidth Forms\n (ucs >= 0xffe0 && ucs <= 0xffe6)));\n }\n function wcwidthHigh(ucs) {\n if (bisearch(ucs, COMBINING_HIGH))\n return 0;\n if ((ucs >= 0x20000 && ucs <= 0x2fffd) || (ucs >= 0x30000 && ucs <= 0x3fffd)) {\n return 2;\n }\n return 1;\n }\n const control = opts.control | 0;\n let table = null;\n function init_table() {\n // lookup table for BMP\n const CODEPOINTS = 65536; // BMP holds 65536 codepoints\n const BITWIDTH = 2; // a codepoint can have a width of 0, 1 or 2\n const ITEMSIZE = 32; // using uint32_t\n const CONTAINERSIZE = CODEPOINTS * BITWIDTH / ITEMSIZE;\n const CODEPOINTS_PER_ITEM = ITEMSIZE / BITWIDTH;\n table = (typeof Uint32Array === 'undefined')\n ? new Array(CONTAINERSIZE)\n : new Uint32Array(CONTAINERSIZE);\n for (let i = 0; i < CONTAINERSIZE; ++i) {\n let num = 0;\n let pos = CODEPOINTS_PER_ITEM;\n while (pos--)\n num = (num << 2) | wcwidthBMP(CODEPOINTS_PER_ITEM * i + pos);\n table[i] = num;\n }\n return table;\n }\n // get width from lookup table\n // position in container : num / CODEPOINTS_PER_ITEM\n // ==> n = table[Math.floor(num / 16)]\n // ==> n = table[num >> 4]\n // 16 codepoints per number: FFEEDDCCBBAA99887766554433221100\n // position in number : (num % CODEPOINTS_PER_ITEM) * BITWIDTH\n // ==> m = (n % 16) * 2\n // ==> m = (num & 15) << 1\n // right shift to position m\n // ==> n = n >> m e.g. m=12 000000000000FFEEDDCCBBAA99887766\n // we are only interested in 2 LSBs, cut off higher bits\n // ==> n = n & 3 e.g. 000000000000000000000000000000XX\n return function (num) {\n num = num | 0; // get asm.js like optimization under V8\n if (num < 32)\n return control | 0;\n if (num < 127)\n return 1;\n let t = table || init_table();\n if (num < 65536)\n return t[num >> 4] >> ((num & 15) << 1) & 3;\n // do a full search for high codepoints\n return wcwidthHigh(num);\n };\n})({nul: 0, control: 0}); // configurable options\n","/**\n * @license MIT\n */\n\nimport { LinkMatcherOptions } from './Interfaces';\nimport { LinkMatcher, LinkMatcherHandler, LinkMatcherValidationCallback } from './Types';\n\nconst INVALID_LINK_CLASS = 'xterm-invalid-link';\n\nconst protocolClause = '(https?:\\\\/\\\\/)';\nconst domainCharacterSet = '[\\\\da-z\\\\.-]+';\nconst negatedDomainCharacterSet = '[^\\\\da-z\\\\.-]+';\nconst domainBodyClause = '(' + domainCharacterSet + ')';\nconst tldClause = '([a-z\\\\.]{2,6})';\nconst ipClause = '((\\\\d{1,3}\\\\.){3}\\\\d{1,3})';\nconst localHostClause = '(localhost)';\nconst portClause = '(:\\\\d{1,5})';\nconst hostClause = '((' + domainBodyClause + '\\\\.' + tldClause + ')|' + ipClause + '|' + localHostClause + ')' + portClause + '?';\nconst pathClause = '(\\\\/[\\\\/\\\\w\\\\.\\\\-%~]*)*';\nconst queryStringHashFragmentCharacterSet = '[0-9\\\\w\\\\[\\\\]\\\\(\\\\)\\\\/\\\\?\\\\!#@$%&\\'*+,:;~\\\\=\\\\.\\\\-]*';\nconst queryStringClause = '(\\\\?' + queryStringHashFragmentCharacterSet + ')?';\nconst hashFragmentClause = '(#' + queryStringHashFragmentCharacterSet + ')?';\nconst negatedPathCharacterSet = '[^\\\\/\\\\w\\\\.\\\\-%]+';\nconst bodyClause = hostClause + pathClause + queryStringClause + hashFragmentClause;\nconst start = '(?:^|' + negatedDomainCharacterSet + ')(';\nconst end = ')($|' + negatedPathCharacterSet + ')';\nconst strictUrlRegex = new RegExp(start + protocolClause + bodyClause + end);\n\n/**\n * The ID of the built in http(s) link matcher.\n */\nconst HYPERTEXT_LINK_MATCHER_ID = 0;\n\n/**\n * The Linkifier applies links to rows shortly after they have been refreshed.\n */\nexport class Linkifier {\n /**\n * The time to wait after a row is changed before it is linkified. This prevents\n * the costly operation of searching every row multiple times, potentially a\n * huge amount of times.\n */\n protected static TIME_BEFORE_LINKIFY = 200;\n\n protected _linkMatchers: LinkMatcher[];\n\n private _document: Document;\n private _rows: HTMLElement[];\n private _rowTimeoutIds: number[];\n private _nextLinkMatcherId = HYPERTEXT_LINK_MATCHER_ID;\n\n constructor() {\n this._rowTimeoutIds = [];\n this._linkMatchers = [];\n this.registerLinkMatcher(strictUrlRegex, null, { matchIndex: 1 });\n }\n\n /**\n * Attaches the linkifier to the DOM, enabling linkification.\n * @param document The document object.\n * @param rows The array of rows to apply links to.\n */\n public attachToDom(document: Document, rows: HTMLElement[]) {\n this._document = document;\n this._rows = rows;\n }\n\n /**\n * Queues a row for linkification.\n * @param {number} rowIndex The index of the row to linkify.\n */\n public linkifyRow(rowIndex: number): void {\n // Don't attempt linkify if not yet attached to DOM\n if (!this._document) {\n return;\n }\n\n const timeoutId = this._rowTimeoutIds[rowIndex];\n if (timeoutId) {\n clearTimeout(timeoutId);\n }\n this._rowTimeoutIds[rowIndex] = setTimeout(this._linkifyRow.bind(this, rowIndex), Linkifier.TIME_BEFORE_LINKIFY);\n }\n\n /**\n * Attaches a handler for hypertext links, overriding default <a> behavior\n * for standard http(s) links.\n * @param {LinkHandler} handler The handler to use, this can be cleared with\n * null.\n */\n public setHypertextLinkHandler(handler: LinkMatcherHandler): void {\n this._linkMatchers[HYPERTEXT_LINK_MATCHER_ID].handler = handler;\n }\n\n /**\n * Attaches a validation callback for hypertext links.\n * @param {LinkMatcherValidationCallback} callback The callback to use, this\n * can be cleared with null.\n */\n public setHypertextValidationCallback(callback: LinkMatcherValidationCallback): void {\n this._linkMatchers[HYPERTEXT_LINK_MATCHER_ID].validationCallback = callback;\n }\n\n /**\n * Registers a link matcher, allowing custom link patterns to be matched and\n * handled.\n * @param {RegExp} regex The regular expression to search for, specifically\n * this searches the textContent of the rows. You will want to use \\s to match\n * a space ' ' character for example.\n * @param {LinkHandler} handler The callback when the link is called.\n * @param {LinkMatcherOptions} [options] Options for the link matcher.\n * @return {number} The ID of the new matcher, this can be used to deregister.\n */\n public registerLinkMatcher(regex: RegExp, handler: LinkMatcherHandler, options: LinkMatcherOptions = {}): number {\n if (this._nextLinkMatcherId !== HYPERTEXT_LINK_MATCHER_ID && !handler) {\n throw new Error('handler must be defined');\n }\n const matcher: LinkMatcher = {\n id: this._nextLinkMatcherId++,\n regex,\n handler,\n matchIndex: options.matchIndex,\n validationCallback: options.validationCallback,\n priority: options.priority || 0\n };\n this._addLinkMatcherToList(matcher);\n return matcher.id;\n }\n\n /**\n * Inserts a link matcher to the list in the correct position based on the\n * priority of each link matcher. New link matchers of equal priority are\n * considered after older link matchers.\n * @param matcher The link matcher to be added.\n */\n private _addLinkMatcherToList(matcher: LinkMatcher): void {\n if (this._linkMatchers.length === 0) {\n this._linkMatchers.push(matcher);\n return;\n }\n\n for (let i = this._linkMatchers.length - 1; i >= 0; i--) {\n if (matcher.priority <= this._linkMatchers[i].priority) {\n this._linkMatchers.splice(i + 1, 0, matcher);\n return;\n }\n }\n\n this._linkMatchers.splice(0, 0, matcher);\n }\n\n /**\n * Deregisters a link matcher if it has been registered.\n * @param {number} matcherId The link matcher's ID (returned after register)\n * @return {boolean} Whether a link matcher was found and deregistered.\n */\n public deregisterLinkMatcher(matcherId: number): boolean {\n // ID 0 is the hypertext link matcher which cannot be deregistered\n for (let i = 1; i < this._linkMatchers.length; i++) {\n if (this._linkMatchers[i].id === matcherId) {\n this._linkMatchers.splice(i, 1);\n return true;\n }\n }\n return false;\n }\n\n /**\n * Linkifies a row.\n * @param {number} rowIndex The index of the row to linkify.\n */\n private _linkifyRow(rowIndex: number): void {\n const row = this._rows[rowIndex];\n if (!row) {\n return;\n }\n const text = row.textContent;\n for (let i = 0; i < this._linkMatchers.length; i++) {\n const matcher = this._linkMatchers[i];\n const linkElements = this._doLinkifyRow(row, matcher);\n if (linkElements.length > 0) {\n // Fire validation callback\n if (matcher.validationCallback) {\n for (let j = 0; j < linkElements.length; j++) {\n const element = linkElements[j];\n matcher.validationCallback(element.textContent, element, isValid => {\n if (!isValid) {\n element.classList.add(INVALID_LINK_CLASS);\n }\n });\n }\n }\n // Only allow a single LinkMatcher to trigger on any given row.\n return;\n }\n }\n }\n\n /**\n * Linkifies a row given a specific handler.\n * @param {HTMLElement} row The row to linkify.\n * @param {LinkMatcher} matcher The link matcher for this line.\n * @return The link element(s) that were added.\n */\n private _doLinkifyRow(row: HTMLElement, matcher: LinkMatcher): HTMLElement[] {\n // Iterate over nodes as we want to consider text nodes\n let result = [];\n const isHttpLinkMatcher = matcher.id === HYPERTEXT_LINK_MATCHER_ID;\n const nodes = row.childNodes;\n\n // Find the first match\n let match = row.textContent.match(matcher.regex);\n if (!match || match.length === 0) {\n return result;\n }\n let uri = match[typeof matcher.matchIndex !== 'number' ? 0 : matcher.matchIndex];\n // Set the next searches start index\n let rowStartIndex = match.index + uri.length;\n\n for (let i = 0; i < nodes.length; i++) {\n const node = nodes[i];\n const searchIndex = node.textContent.indexOf(uri);\n if (searchIndex >= 0) {\n const linkElement = this._createAnchorElement(uri, matcher.handler, isHttpLinkMatcher);\n if (node.textContent.length === uri.length) {\n // Matches entire string\n if (node.nodeType === 3 /*Node.TEXT_NODE*/) {\n this._replaceNode(node, linkElement);\n } else {\n const element = (<HTMLElement>node);\n if (element.nodeName === 'A') {\n // This row has already been linkified\n return result;\n }\n element.innerHTML = '';\n element.appendChild(linkElement);\n }\n } else if (node.childNodes.length > 1) {\n // Matches part of string in an element with multiple child nodes\n for (let j = 0; j < node.childNodes.length; j++) {\n const childNode = node.childNodes[j];\n const childSearchIndex = childNode.textContent.indexOf(uri);\n if (childSearchIndex !== -1) {\n // Match found in currentNode\n this._replaceNodeSubstringWithNode(childNode, linkElement, uri, childSearchIndex);\n // Don't need to count nodesAdded by replacing the node as this\n // is a child node, not a top-level node.\n break;\n }\n }\n } else {\n // Matches part of string in a single text node\n const nodesAdded = this._replaceNodeSubstringWithNode(node, linkElement, uri, searchIndex);\n // No need to consider the new nodes\n i += nodesAdded;\n }\n result.push(linkElement);\n\n // Find the next match\n match = row.textContent.substring(rowStartIndex).match(matcher.regex);\n if (!match || match.length === 0) {\n return result;\n }\n uri = match[typeof matcher.matchIndex !== 'number' ? 0 : matcher.matchIndex];\n rowStartIndex += match.index + uri.length;\n }\n }\n return result;\n }\n\n /**\n * Creates a link anchor element.\n * @param {string} uri The uri of the link.\n * @return {HTMLAnchorElement} The link.\n */\n private _createAnchorElement(uri: string, handler: LinkMatcherHandler, isHypertextLinkHandler: boolean): HTMLAnchorElement {\n const element = this._document.createElement('a');\n element.textContent = uri;\n element.draggable = false;\n if (isHypertextLinkHandler) {\n element.href = uri;\n // Force link on another tab so work is not lost\n element.target = '_blank';\n element.addEventListener('click', (event: MouseEvent) => {\n if (handler) {\n return handler(event, uri);\n }\n });\n } else {\n element.addEventListener('click', (event: MouseEvent) => {\n // Don't execute the handler if the link is flagged as invalid\n if (element.classList.contains(INVALID_LINK_CLASS)) {\n return;\n }\n return handler(event, uri);\n });\n }\n return element;\n }\n\n /**\n * Replace a node with 1 or more other nodes.\n * @param {Node} oldNode The node to replace.\n * @param {Node[]} newNodes The new nodes to insert in order.\n */\n private _replaceNode(oldNode: Node, ...newNodes: Node[]): void {\n const parent = oldNode.parentNode;\n for (let i = 0; i < newNodes.length; i++) {\n parent.insertBefore(newNodes[i], oldNode);\n }\n parent.removeChild(oldNode);\n }\n\n /**\n * Replace a substring within a node with a new node.\n * @param {Node} targetNode The target node; either a text node or a <span>\n * containing a single text node.\n * @param {Node} newNode The new node to insert.\n * @param {string} substring The substring to replace.\n * @param {number} substringIndex The index of the substring within the string.\n * @return The number of nodes to skip when searching for the next uri.\n */\n private _replaceNodeSubstringWithNode(targetNode: Node, newNode: Node, substring: string, substringIndex: number): number {\n // If the targetNode is a non-text node with a single child, make the child\n // the new targetNode.\n if (targetNode.childNodes.length === 1) {\n targetNode = targetNode.childNodes[0];\n }\n\n // The targetNode will be either a text node or a <span>. The text node\n // (targetNode or its only-child) needs to be replaced with newNode plus new\n // text nodes potentially on either side.\n if (targetNode.nodeType !== 3/*Node.TEXT_NODE*/) {\n throw new Error('targetNode must be a text node or only contain a single text node');\n }\n\n const fullText = targetNode.textContent;\n\n if (substringIndex === 0) {\n // Replace with <newNode><textnode>\n const rightText = fullText.substring(substring.length);\n const rightTextNode = this._document.createTextNode(rightText);\n this._replaceNode(targetNode, newNode, rightTextNode);\n return 0;\n }\n\n if (substringIndex === targetNode.textContent.length - substring.length) {\n // Replace with <textnode><newNode>\n const leftText = fullText.substring(0, substringIndex);\n const leftTextNode = this._document.createTextNode(leftText);\n this._replaceNode(targetNode, leftTextNode, newNode);\n return 0;\n }\n\n // Replace with <textnode><newNode><textnode>\n const leftText = fullText.substring(0, substringIndex);\n const leftTextNode = this._document.createTextNode(leftText);\n const rightText = fullText.substring(substringIndex + substring.length);\n const rightTextNode = this._document.createTextNode(rightText);\n this._replaceNode(targetNode, leftTextNode, newNode, rightTextNode);\n return 1;\n }\n}\n","/**\n * @license MIT\n */\n\nimport { C0 } from './EscapeSequences';\nimport { IInputHandler } from './Interfaces';\nimport { CHARSETS, DEFAULT_CHARSET } from './Charsets';\n\nconst normalStateHandler: {[key: string]: (parser: Parser, handler: IInputHandler) => void} = {};\nnormalStateHandler[C0.BEL] = (parser, handler) => handler.bell();\nnormalStateHandler[C0.LF] = (parser, handler) => handler.lineFeed();\nnormalStateHandler[C0.VT] = normalStateHandler[C0.LF];\nnormalStateHandler[C0.FF] = normalStateHandler[C0.LF];\nnormalStateHandler[C0.CR] = (parser, handler) => handler.carriageReturn();\nnormalStateHandler[C0.BS] = (parser, handler) => handler.backspace();\nnormalStateHandler[C0.HT] = (parser, handler) => handler.tab();\nnormalStateHandler[C0.SO] = (parser, handler) => handler.shiftOut();\nnormalStateHandler[C0.SI] = (parser, handler) => handler.shiftIn();\nnormalStateHandler[C0.ESC] = (parser, handler) => parser.setState(ParserState.ESCAPED);\n\n// TODO: Remove terminal when parser owns params and currentParam\nconst escapedStateHandler: {[key: string]: (parser: Parser, terminal: any) => void} = {};\nescapedStateHandler['['] = (parser, terminal) => {\n // ESC [ Control Sequence Introducer (CSI is 0x9b)\n terminal.params = [];\n terminal.currentParam = 0;\n parser.setState(ParserState.CSI_PARAM);\n};\nescapedStateHandler[']'] = (parser, terminal) => {\n // ESC ] Operating System Command (OSC is 0x9d)\n terminal.params = [];\n terminal.currentParam = 0;\n parser.setState(ParserState.OSC);\n};\nescapedStateHandler['P'] = (parser, terminal) => {\n // ESC P Device Control String (DCS is 0x90)\n terminal.params = [];\n terminal.currentParam = 0;\n parser.setState(ParserState.DCS);\n};\nescapedStateHandler['_'] = (parser, terminal) => {\n // ESC _ Application Program Command ( APC is 0x9f).\n parser.setState(ParserState.IGNORE);\n};\nescapedStateHandler['^'] = (parser, terminal) => {\n // ESC ^ Privacy Message ( PM is 0x9e).\n parser.setState(ParserState.IGNORE);\n};\nescapedStateHandler['c'] = (parser, terminal) => {\n // ESC c Full Reset (RIS).\n terminal.reset();\n};\nescapedStateHandler['E'] = (parser, terminal) => {\n // ESC E Next Line ( NEL is 0x85).\n terminal.buffer.x = 0;\n terminal.index();\n parser.setState(ParserState.NORMAL);\n};\nescapedStateHandler['D'] = (parser, terminal) => {\n // ESC D Index ( IND is 0x84).\n terminal.index();\n parser.setState(ParserState.NORMAL);\n};\nescapedStateHandler['M'] = (parser, terminal) => {\n // ESC M Reverse Index ( RI is 0x8d).\n terminal.reverseIndex();\n parser.setState(ParserState.NORMAL);\n};\nescapedStateHandler['%'] = (parser, terminal) => {\n // ESC % Select default/utf-8 character set.\n // @ = default, G = utf-8\n terminal.setgLevel(0);\n terminal.setgCharset(0, DEFAULT_CHARSET); // US (default)\n parser.setState(ParserState.NORMAL);\n parser.skipNextChar();\n};\nescapedStateHandler[C0.CAN] = (parser) => parser.setState(ParserState.NORMAL);\n\nconst csiParamStateHandler: {[key: string]: (parser: Parser) => void} = {};\ncsiParamStateHandler['?'] = (parser) => parser.setPrefix('?');\ncsiParamStateHandler['>'] = (parser) => parser.setPrefix('>');\ncsiParamStateHandler['!'] = (parser) => parser.setPrefix('!');\ncsiParamStateHandler['0'] = (parser) => parser.setParam(parser.getParam() * 10);\ncsiParamStateHandler['1'] = (parser) => parser.setParam(parser.getParam() * 10 + 1);\ncsiParamStateHandler['2'] = (parser) => parser.setParam(parser.getParam() * 10 + 2);\ncsiParamStateHandler['3'] = (parser) => parser.setParam(parser.getParam() * 10 + 3);\ncsiParamStateHandler['4'] = (parser) => parser.setParam(parser.getParam() * 10 + 4);\ncsiParamStateHandler['5'] = (parser) => parser.setParam(parser.getParam() * 10 + 5);\ncsiParamStateHandler['6'] = (parser) => parser.setParam(parser.getParam() * 10 + 6);\ncsiParamStateHandler['7'] = (parser) => parser.setParam(parser.getParam() * 10 + 7);\ncsiParamStateHandler['8'] = (parser) => parser.setParam(parser.getParam() * 10 + 8);\ncsiParamStateHandler['9'] = (parser) => parser.setParam(parser.getParam() * 10 + 9);\ncsiParamStateHandler['$'] = (parser) => parser.setPostfix('$');\ncsiParamStateHandler['\"'] = (parser) => parser.setPostfix('\"');\ncsiParamStateHandler[' '] = (parser) => parser.setPostfix(' ');\ncsiParamStateHandler['\\''] = (parser) => parser.setPostfix('\\'');\ncsiParamStateHandler[';'] = (parser) => parser.finalizeParam();\ncsiParamStateHandler[C0.CAN] = (parser) => parser.setState(ParserState.NORMAL);\n\nconst csiStateHandler: {[key: string]: (handler: IInputHandler, params: number[], prefix: string, postfix: string, parser: Parser) => void} = {};\ncsiStateHandler['@'] = (handler, params, prefix) => handler.insertChars(params);\ncsiStateHandler['A'] = (handler, params, prefix) => handler.cursorUp(params);\ncsiStateHandler['B'] = (handler, params, prefix) => handler.cursorDown(params);\ncsiStateHandler['C'] = (handler, params, prefix) => handler.cursorForward(params);\ncsiStateHandler['D'] = (handler, params, prefix) => handler.cursorBackward(params);\ncsiStateHandler['E'] = (handler, params, prefix) => handler.cursorNextLine(params);\ncsiStateHandler['F'] = (handler, params, prefix) => handler.cursorPrecedingLine(params);\ncsiStateHandler['G'] = (handler, params, prefix) => handler.cursorCharAbsolute(params);\ncsiStateHandler['H'] = (handler, params, prefix) => handler.cursorPosition(params);\ncsiStateHandler['I'] = (handler, params, prefix) => handler.cursorForwardTab(params);\ncsiStateHandler['J'] = (handler, params, prefix) => handler.eraseInDisplay(params);\ncsiStateHandler['K'] = (handler, params, prefix) => handler.eraseInLine(params);\ncsiStateHandler['L'] = (handler, params, prefix) => handler.insertLines(params);\ncsiStateHandler['M'] = (handler, params, prefix) => handler.deleteLines(params);\ncsiStateHandler['P'] = (handler, params, prefix) => handler.deleteChars(params);\ncsiStateHandler['S'] = (handler, params, prefix) => handler.scrollUp(params);\ncsiStateHandler['T'] = (handler, params, prefix) => {\n if (params.length < 2 && !prefix) {\n handler.scrollDown(params);\n }\n};\ncsiStateHandler['X'] = (handler, params, prefix) => handler.eraseChars(params);\ncsiStateHandler['Z'] = (handler, params, prefix) => handler.cursorBackwardTab(params);\ncsiStateHandler['`'] = (handler, params, prefix) => handler.charPosAbsolute(params);\ncsiStateHandler['a'] = (handler, params, prefix) => handler.HPositionRelative(params);\ncsiStateHandler['b'] = (handler, params, prefix) => handler.repeatPrecedingCharacter(params);\ncsiStateHandler['c'] = (handler, params, prefix) => handler.sendDeviceAttributes(params);\ncsiStateHandler['d'] = (handler, params, prefix) => handler.linePosAbsolute(params);\ncsiStateHandler['e'] = (handler, params, prefix) => handler.VPositionRelative(params);\ncsiStateHandler['f'] = (handler, params, prefix) => handler.HVPosition(params);\ncsiStateHandler['g'] = (handler, params, prefix) => handler.tabClear(params);\ncsiStateHandler['h'] = (handler, params, prefix) => handler.setMode(params);\ncsiStateHandler['l'] = (handler, params, prefix) => handler.resetMode(params);\ncsiStateHandler['m'] = (handler, params, prefix) => handler.charAttributes(params);\ncsiStateHandler['n'] = (handler, params, prefix) => handler.deviceStatus(params);\ncsiStateHandler['p'] = (handler, params, prefix) => {\n switch (prefix) {\n case '!': handler.softReset(params); break;\n }\n};\ncsiStateHandler['q'] = (handler, params, prefix, postfix) => {\n if (postfix === ' ') {\n handler.setCursorStyle(params);\n }\n};\ncsiStateHandler['r'] = (handler, params) => handler.setScrollRegion(params);\ncsiStateHandler['s'] = (handler, params) => handler.saveCursor(params);\ncsiStateHandler['u'] = (handler, params) => handler.restoreCursor(params);\ncsiStateHandler[C0.CAN] = (handler, params, prefix, postfix, parser) => parser.setState(ParserState.NORMAL);\n\nenum ParserState {\n NORMAL = 0,\n ESCAPED = 1,\n CSI_PARAM = 2,\n CSI = 3,\n OSC = 4,\n CHARSET = 5,\n DCS = 6,\n IGNORE = 7\n}\n\n/**\n * The terminal's parser, all input into the terminal goes through the parser\n * which parses and defers the actual input handling the the IInputHandler\n * specified in the constructor.\n */\nexport class Parser {\n private _state: ParserState;\n private _position: number;\n\n // TODO: Remove terminal when handler can do everything\n constructor(\n private _inputHandler: IInputHandler,\n private _terminal: any\n ) {\n this._state = ParserState.NORMAL;\n }\n\n /**\n * Parse and handle data.\n *\n * @param data The data to parse.\n */\n public parse(data: string): ParserState {\n let l = data.length, j, cs, ch, code, low;\n\n if (this._terminal.debug) {\n this._terminal.log('data: ' + data);\n }\n\n this._position = 0;\n // apply leftover surrogate high from last write\n if (this._terminal.surrogate_high) {\n data = this._terminal.surrogate_high + data;\n this._terminal.surrogate_high = '';\n }\n\n for (; this._position < l; this._position++) {\n ch = data[this._position];\n\n // FIXME: higher chars than 0xa0 are not allowed in escape sequences\n // --> maybe move to default\n code = data.charCodeAt(this._position);\n if (0xD800 <= code && code <= 0xDBFF) {\n // we got a surrogate high\n // get surrogate low (next 2 bytes)\n low = data.charCodeAt(this._position + 1);\n if (isNaN(low)) {\n // end of data stream, save surrogate high\n this._terminal.surrogate_high = ch;\n continue;\n }\n code = ((code - 0xD800) * 0x400) + (low - 0xDC00) + 0x10000;\n ch += data.charAt(this._position + 1);\n }\n // surrogate low - already handled above\n if (0xDC00 <= code && code <= 0xDFFF)\n continue;\n\n switch (this._state) {\n case ParserState.NORMAL:\n if (ch in normalStateHandler) {\n normalStateHandler[ch](this, this._inputHandler);\n } else {\n this._inputHandler.addChar(ch, code);\n }\n break;\n case ParserState.ESCAPED:\n if (ch in escapedStateHandler) {\n escapedStateHandler[ch](this, this._terminal);\n // Skip switch as it was just handled\n break;\n }\n switch (ch) {\n\n // ESC (,),*,+,-,. Designate G0-G2 Character Set.\n case '(': // <-- this seems to get all the attention\n case ')':\n case '*':\n case '+':\n case '-':\n case '.':\n switch (ch) {\n case '(':\n this._terminal.gcharset = 0;\n break;\n case ')':\n this._terminal.gcharset = 1;\n break;\n case '*':\n this._terminal.gcharset = 2;\n break;\n case '+':\n this._terminal.gcharset = 3;\n break;\n case '-':\n this._terminal.gcharset = 1;\n break;\n case '.':\n this._terminal.gcharset = 2;\n break;\n }\n this._state = ParserState.CHARSET;\n break;\n\n // Designate G3 Character Set (VT300).\n // A = ISO Latin-1 Supplemental.\n // Not implemented.\n case '/':\n this._terminal.gcharset = 3;\n this._state = ParserState.CHARSET;\n this._position--;\n break;\n\n // ESC N\n // Single Shift Select of G2 Character Set\n // ( SS2 is 0x8e). This affects next character only.\n case 'N':\n break;\n // ESC O\n // Single Shift Select of G3 Character Set\n // ( SS3 is 0x8f). This affects next character only.\n case 'O':\n break;\n // ESC n\n // Invoke the G2 Character Set as GL (LS2).\n case 'n':\n this._terminal.setgLevel(2);\n break;\n // ESC o\n // Invoke the G3 Character Set as GL (LS3).\n case 'o':\n this._terminal.setgLevel(3);\n break;\n // ESC |\n // Invoke the G3 Character Set as GR (LS3R).\n case '|':\n this._terminal.setgLevel(3);\n break;\n // ESC }\n // Invoke the G2 Character Set as GR (LS2R).\n case '}':\n this._terminal.setgLevel(2);\n break;\n // ESC ~\n // Invoke the G1 Character Set as GR (LS1R).\n case '~':\n this._terminal.setgLevel(1);\n break;\n\n // ESC 7 Save Cursor (DECSC).\n case '7':\n this._inputHandler.saveCursor();\n this._state = ParserState.NORMAL;\n break;\n\n // ESC 8 Restore Cursor (DECRC).\n case '8':\n this._inputHandler.restoreCursor();\n this._state = ParserState.NORMAL;\n break;\n\n // ESC # 3 DEC line height/width\n case '#':\n this._state = ParserState.NORMAL;\n this._position++;\n break;\n\n // ESC H Tab Set (HTS is 0x88).\n case 'H':\n this._terminal.tabSet();\n this._state = ParserState.NORMAL;\n break;\n\n // ESC = Application Keypad (DECKPAM).\n case '=':\n this._terminal.log('Serial port requested application keypad.');\n this._terminal.applicationKeypad = true;\n this._terminal.viewport.syncScrollArea();\n this._state = ParserState.NORMAL;\n break;\n\n // ESC > Normal Keypad (DECKPNM).\n case '>':\n this._terminal.log('Switching back to normal keypad.');\n this._terminal.applicationKeypad = false;\n this._terminal.viewport.syncScrollArea();\n this._state = ParserState.NORMAL;\n break;\n\n default:\n this._state = ParserState.NORMAL;\n this._terminal.error('Unknown ESC control: %s.', ch);\n break;\n }\n break;\n\n case ParserState.CHARSET:\n if (ch in CHARSETS) {\n cs = CHARSETS[ch];\n if (ch === '/') { // ISOLatin is actually /A\n this.skipNextChar();\n }\n } else {\n cs = DEFAULT_CHARSET;\n }\n this._terminal.setgCharset(this._terminal.gcharset, cs);\n this._terminal.gcharset = null;\n this._state = ParserState.NORMAL;\n break;\n\n case ParserState.OSC:\n // OSC Ps ; Pt ST\n // OSC Ps ; Pt BEL\n // Set Text Parameters.\n if (ch === C0.ESC || ch === C0.BEL) {\n if (ch === C0.ESC) this._position++;\n\n this._terminal.params.push(this._terminal.currentParam);\n\n switch (this._terminal.params[0]) {\n case 0:\n case 1:\n case 2:\n if (this._terminal.params[1]) {\n this._terminal.title = this._terminal.params[1];\n this._terminal.handleTitle(this._terminal.title);\n }\n break;\n case 3:\n // set X property\n break;\n case 4:\n case 5:\n // change dynamic colors\n break;\n case 10:\n case 11:\n case 12:\n case 13:\n case 14:\n case 15:\n case 16:\n case 17:\n case 18:\n case 19:\n // change dynamic ui colors\n break;\n case 46:\n // change log file\n break;\n case 50:\n // dynamic font\n break;\n case 51:\n // emacs shell\n break;\n case 52:\n // manipulate selection data\n break;\n case 104:\n case 105:\n case 110:\n case 111:\n case 112:\n case 113:\n case 114:\n case 115:\n case 116:\n case 117:\n case 118:\n // reset colors\n break;\n }\n\n this._terminal.params = [];\n this._terminal.currentParam = 0;\n this._state = ParserState.NORMAL;\n } else {\n if (!this._terminal.params.length) {\n if (ch >= '0' && ch <= '9') {\n this._terminal.currentParam =\n this._terminal.currentParam * 10 + ch.charCodeAt(0) - 48;\n } else if (ch === ';') {\n this._terminal.params.push(this._terminal.currentParam);\n this._terminal.currentParam = '';\n }\n } else {\n this._terminal.currentParam += ch;\n }\n }\n break;\n\n case ParserState.CSI_PARAM:\n if (ch in csiParamStateHandler) {\n csiParamStateHandler[ch](this);\n break;\n }\n this.finalizeParam();\n // Fall through the CSI as this character should be the CSI code.\n this._state = ParserState.CSI;\n\n case ParserState.CSI:\n if (ch in csiStateHandler) {\n if (this._terminal.debug) {\n this._terminal.log(`CSI ${this._terminal.prefix ? this._terminal.prefix : ''} ${this._terminal.params ? this._terminal.params.join(';') : ''} ${this._terminal.postfix ? this._terminal.postfix : ''} ${ch}`);\n }\n csiStateHandler[ch](this._inputHandler, this._terminal.params, this._terminal.prefix, this._terminal.postfix, this);\n } else {\n this._terminal.error('Unknown CSI code: %s.', ch);\n }\n\n this._state = ParserState.NORMAL;\n this._terminal.prefix = '';\n this._terminal.postfix = '';\n break;\n\n case ParserState.DCS:\n if (ch === C0.ESC || ch === C0.BEL) {\n if (ch === C0.ESC) this._position++;\n let pt;\n let valid: boolean;\n\n switch (this._terminal.prefix) {\n // User-Defined Keys (DECUDK).\n case '':\n break;\n\n // Request Status String (DECRQSS).\n // test: echo -e '\\eP$q\"p\\e\\\\'\n case '$q':\n pt = this._terminal.currentParam;\n valid = false;\n\n switch (pt) {\n // DECSCA\n case '\"q':\n pt = '0\"q';\n break;\n\n // DECSCL\n case '\"p':\n pt = '61\"p';\n break;\n\n // DECSTBM\n case 'r':\n pt = ''\n + (this._terminal.buffer.scrollTop + 1)\n + ';'\n + (this._terminal.buffer.scrollBottom + 1)\n + 'r';\n break;\n\n // SGR\n case 'm':\n pt = '0m';\n break;\n\n default:\n this._terminal.error('Unknown DCS Pt: %s.', pt);\n pt = '';\n break;\n }\n\n this._terminal.send(C0.ESC + 'P' + +valid + '$r' + pt + C0.ESC + '\\\\');\n break;\n\n // Set Termcap/Terminfo Data (xterm, experimental).\n case '+p':\n break;\n\n // Request Termcap/Terminfo String (xterm, experimental)\n // Regular xterm does not even respond to this sequence.\n // This can cause a small glitch in vim.\n // test: echo -ne '\\eP+q6b64\\e\\\\'\n case '+q':\n pt = this._terminal.currentParam;\n valid = false;\n\n this._terminal.send(C0.ESC + 'P' + +valid + '+r' + pt + C0.ESC + '\\\\');\n break;\n\n default:\n this._terminal.error('Unknown DCS prefix: %s.', this._terminal.prefix);\n break;\n }\n\n this._terminal.currentParam = 0;\n this._terminal.prefix = '';\n this._state = ParserState.NORMAL;\n } else if (!this._terminal.currentParam) {\n if (!this._terminal.prefix && ch !== '$' && ch !== '+') {\n this._terminal.currentParam = ch;\n } else if (this._terminal.prefix.length === 2) {\n this._terminal.currentParam = ch;\n } else {\n this._terminal.prefix += ch;\n }\n } else {\n this._terminal.currentParam += ch;\n }\n break;\n\n case ParserState.IGNORE:\n // For PM and APC.\n if (ch === C0.ESC || ch === C0.BEL) {\n if (ch === C0.ESC) this._position++;\n this._state = ParserState.NORMAL;\n }\n break;\n }\n }\n return this._state;\n }\n\n /**\n * Set the parser's current parsing state.\n *\n * @param state The new state.\n */\n public setState(state: ParserState): void {\n this._state = state;\n }\n\n /**\n * Sets the parsier's current prefix. CSI codes can have prefixes of '?', '>'\n * or '!'.\n *\n * @param prefix The prefix.\n */\n public setPrefix(prefix: string): void {\n this._terminal.prefix = prefix;\n }\n\n /**\n * Sets the parsier's current prefix. CSI codes can have postfixes of '$',\n * '\"', ' ', '\\''.\n *\n * @param postfix The postfix.\n */\n public setPostfix(postfix: string): void {\n this._terminal.postfix = postfix;\n }\n\n /**\n * Sets the parser's current parameter.\n *\n * @param param the parameter.\n */\n public setParam(param: number) {\n this._terminal.currentParam = param;\n }\n\n /**\n * Gets the parser's current parameter.\n */\n public getParam(): number {\n return this._terminal.currentParam;\n }\n\n /**\n * Finalizes the parser's current parameter, adding it to the list of\n * parameters and setting the new current parameter to 0.\n */\n public finalizeParam(): void {\n this._terminal.params.push(this._terminal.currentParam);\n this._terminal.currentParam = 0;\n }\n\n /**\n * Tell the parser to skip the next character.\n */\n public skipNextChar(): void {\n this._position++;\n }\n\n /**\n * Tell the parser to repeat parsing the current character (for example if it\n * needs parsing using a different state.\n */\n // public repeatChar(): void {\n // this._position--;\n // }\n}\n","/**\n * @license MIT\n */\n\nimport { ITerminal } from './Interfaces';\nimport { DomElementObjectPool } from './utils/DomElementObjectPool';\n\n/**\n * The maximum number of refresh frames to skip when the write buffer is non-\n * empty. Note that these frames may be intermingled with frames that are\n * skipped via requestAnimationFrame's mechanism.\n */\nconst MAX_REFRESH_FRAME_SKIP = 5;\n\n/**\n * Flags used to render terminal text properly.\n */\nenum FLAGS {\n BOLD = 1,\n UNDERLINE = 2,\n BLINK = 4,\n INVERSE = 8,\n INVISIBLE = 16\n};\n\nlet brokenBold: boolean = null;\n\nexport class Renderer {\n /** A queue of the rows to be refreshed */\n private _refreshRowsQueue: {start: number, end: number}[] = [];\n private _refreshFramesSkipped = 0;\n private _refreshAnimationFrame = null;\n\n private _spanElementObjectPool = new DomElementObjectPool('span');\n\n constructor(private _terminal: ITerminal) {\n // Figure out whether boldness affects\n // the character width of monospace fonts.\n if (brokenBold === null) {\n brokenBold = checkBoldBroken((<any>this._terminal).element);\n }\n this._spanElementObjectPool = new DomElementObjectPool('span');\n\n // TODO: Pull more DOM interactions into Renderer.constructor, element for\n // example should be owned by Renderer (and also exposed by Terminal due to\n // to established public API).\n }\n\n /**\n * Queues a refresh between two rows (inclusive), to be done on next animation\n * frame.\n * @param {number} start The start row.\n * @param {number} end The end row.\n */\n public queueRefresh(start: number, end: number): void {\n this._refreshRowsQueue.push({ start: start, end: end });\n if (!this._refreshAnimationFrame) {\n this._refreshAnimationFrame = window.requestAnimationFrame(this._refreshLoop.bind(this));\n }\n }\n\n /**\n * Performs the refresh loop callback, calling refresh only if a refresh is\n * necessary before queueing up the next one.\n */\n private _refreshLoop(): void {\n // Skip MAX_REFRESH_FRAME_SKIP frames if the writeBuffer is non-empty as it\n // will need to be immediately refreshed anyway. This saves a lot of\n // rendering time as the viewport DOM does not need to be refreshed, no\n // scroll events, no layouts, etc.\n const skipFrame = this._terminal.writeBuffer.length > 0 && this._refreshFramesSkipped++ <= MAX_REFRESH_FRAME_SKIP;\n if (skipFrame) {\n this._refreshAnimationFrame = window.requestAnimationFrame(this._refreshLoop.bind(this));\n return;\n }\n\n this._refreshFramesSkipped = 0;\n let start;\n let end;\n if (this._refreshRowsQueue.length > 4) {\n // Just do a full refresh when 5+ refreshes are queued\n start = 0;\n end = this._terminal.rows - 1;\n } else {\n // Get start and end rows that need refreshing\n start = this._refreshRowsQueue[0].start;\n end = this._refreshRowsQueue[0].end;\n for (let i = 1; i < this._refreshRowsQueue.length; i++) {\n if (this._refreshRowsQueue[i].start < start) {\n start = this._refreshRowsQueue[i].start;\n }\n if (this._refreshRowsQueue[i].end > end) {\n end = this._refreshRowsQueue[i].end;\n }\n }\n }\n this._refreshRowsQueue = [];\n this._refreshAnimationFrame = null;\n this._refresh(start, end);\n }\n\n /**\n * Refreshes (re-renders) terminal content within two rows (inclusive)\n *\n * Rendering Engine:\n *\n * In the screen buffer, each character is stored as a an array with a character\n * and a 32-bit integer:\n * - First value: a utf-16 character.\n * - Second value:\n * - Next 9 bits: background color (0-511).\n * - Next 9 bits: foreground color (0-511).\n * - Next 14 bits: a mask for misc. flags:\n * - 1=bold\n * - 2=underline\n * - 4=blink\n * - 8=inverse\n * - 16=invisible\n *\n * @param {number} start The row to start from (between 0 and terminal's height terminal - 1)\n * @param {number} end The row to end at (between fromRow and terminal's height terminal - 1)\n */\n private _refresh(start: number, end: number): void {\n // If this is a big refresh, remove the terminal rows from the DOM for faster calculations\n let parent;\n if (end - start >= this._terminal.rows / 2) {\n parent = this._terminal.element.parentNode;\n if (parent) {\n this._terminal.element.removeChild(this._terminal.rowContainer);\n }\n }\n\n let width = this._terminal.cols;\n let y = start;\n\n if (end >= this._terminal.rows) {\n this._terminal.log('`end` is too large. Most likely a bad CSR.');\n end = this._terminal.rows - 1;\n }\n\n for (; y <= end; y++) {\n let row = y + this._terminal.buffer.ydisp;\n\n let line = this._terminal.buffer.lines.get(row);\n\n let x;\n if (this._terminal.buffer.y === y - (this._terminal.buffer.ybase - this._terminal.buffer.ydisp) &&\n this._terminal.cursorState &&\n !this._terminal.cursorHidden) {\n x = this._terminal.buffer.x;\n } else {\n x = -1;\n }\n\n let attr = this._terminal.defAttr;\n\n const documentFragment = document.createDocumentFragment();\n let innerHTML = '';\n let currentElement;\n\n // Return the row's spans to the pool\n while (this._terminal.children[y].children.length) {\n const child = this._terminal.children[y].children[0];\n this._terminal.children[y].removeChild(child);\n this._spanElementObjectPool.release(<HTMLElement>child);\n }\n\n for (let i = 0; i < width; i++) {\n // TODO: Could data be a more specific type?\n let data: any = line[i][0];\n const ch = line[i][1];\n const ch_width: any = line[i][2];\n const isCursor: boolean = i === x;\n if (!ch_width) {\n continue;\n }\n\n if (data !== attr || isCursor) {\n if (attr !== this._terminal.defAttr && !isCursor) {\n if (innerHTML) {\n currentElement.innerHTML = innerHTML;\n innerHTML = '';\n }\n documentFragment.appendChild(currentElement);\n currentElement = null;\n }\n if (data !== this._terminal.defAttr || isCursor) {\n if (innerHTML && !currentElement) {\n currentElement = this._spanElementObjectPool.acquire();\n }\n if (currentElement) {\n if (innerHTML) {\n currentElement.innerHTML = innerHTML;\n innerHTML = '';\n }\n documentFragment.appendChild(currentElement);\n }\n currentElement = this._spanElementObjectPool.acquire();\n\n let bg = data & 0x1ff;\n let fg = (data >> 9) & 0x1ff;\n let flags = data >> 18;\n\n if (isCursor) {\n currentElement.classList.add('reverse-video');\n currentElement.classList.add('terminal-cursor');\n }\n\n if (flags & FLAGS.BOLD) {\n if (!brokenBold) {\n currentElement.classList.add('xterm-bold');\n }\n // See: XTerm*boldColors\n if (fg < 8) {\n fg += 8;\n }\n }\n\n if (flags & FLAGS.UNDERLINE) {\n currentElement.classList.add('xterm-underline');\n }\n\n if (flags & FLAGS.BLINK) {\n currentElement.classList.add('xterm-blink');\n }\n\n // If inverse flag is on, then swap the foreground and background variables.\n if (flags & FLAGS.INVERSE) {\n let temp = bg;\n bg = fg;\n fg = temp;\n // Should inverse just be before the above boldColors effect instead?\n if ((flags & 1) && fg < 8) {\n fg += 8;\n }\n }\n\n if (flags & FLAGS.INVISIBLE && !isCursor) {\n currentElement.classList.add('xterm-hidden');\n }\n\n /**\n * Weird situation: Invert flag used black foreground and white background results\n * in invalid background color, positioned at the 256 index of the 256 terminal\n * color map. Pin the colors manually in such a case.\n *\n * Source: https://github.com/sourcelair/xterm.js/issues/57\n */\n if (flags & FLAGS.INVERSE) {\n if (bg === 257) {\n bg = 15;\n }\n if (fg === 256) {\n fg = 0;\n }\n }\n\n if (bg < 256) {\n currentElement.classList.add(`xterm-bg-color-${bg}`);\n }\n\n if (fg < 256) {\n currentElement.classList.add(`xterm-color-${fg}`);\n }\n\n }\n }\n\n if (ch_width === 2) {\n // Wrap wide characters so they're sized correctly. It's more difficult to release these\n // from the object pool so just create new ones via innerHTML.\n innerHTML += `<span class=\"xterm-wide-char\">${ch}</span>`;\n } else if (ch.charCodeAt(0) > 255) {\n // Wrap any non-wide unicode character as some fonts size them badly\n innerHTML += `<span class=\"xterm-normal-char\">${ch}</span>`;\n } else {\n switch (ch) {\n case '&':\n innerHTML += '&';\n break;\n case '<':\n innerHTML += '<';\n break;\n case '>':\n innerHTML += '>';\n break;\n default:\n if (ch <= ' ') {\n innerHTML += ' ';\n } else {\n innerHTML += ch;\n }\n break;\n }\n }\n\n // The cursor needs its own element, therefore we set attr to -1\n // which will cause the next character to be rendered in a new element\n attr = isCursor ? -1 : data;\n\n }\n\n if (innerHTML && !currentElement) {\n currentElement = this._spanElementObjectPool.acquire();\n }\n if (currentElement) {\n if (innerHTML) {\n currentElement.innerHTML = innerHTML;\n innerHTML = '';\n }\n documentFragment.appendChild(currentElement);\n currentElement = null;\n }\n\n this._terminal.children[y].appendChild(documentFragment);\n }\n\n if (parent) {\n this._terminal.element.appendChild(this._terminal.rowContainer);\n }\n\n this._terminal.emit('refresh', {element: this._terminal.element, start: start, end: end});\n };\n\n /**\n * Refreshes the selection in the DOM.\n * @param start The selection start.\n * @param end The selection end.\n */\n public refreshSelection(start: [number, number], end: [number, number]) {\n // Remove all selections\n while (this._terminal.selectionContainer.children.length) {\n this._terminal.selectionContainer.removeChild(this._terminal.selectionContainer.children[0]);\n }\n\n // Selection does not exist\n if (!start || !end) {\n return;\n }\n\n // Translate from buffer position to viewport position\n const viewportStartRow = start[1] - this._terminal.buffer.ydisp;\n const viewportEndRow = end[1] - this._terminal.buffer.ydisp;\n const viewportCappedStartRow = Math.max(viewportStartRow, 0);\n const viewportCappedEndRow = Math.min(viewportEndRow, this._terminal.rows - 1);\n\n // No need to draw the selection\n if (viewportCappedStartRow >= this._terminal.rows || viewportCappedEndRow < 0) {\n return;\n }\n\n // Create the selections\n const documentFragment = document.createDocumentFragment();\n // Draw first row\n const startCol = viewportStartRow === viewportCappedStartRow ? start[0] : 0;\n const endCol = viewportCappedStartRow === viewportCappedEndRow ? end[0] : this._terminal.cols;\n documentFragment.appendChild(this._createSelectionElement(viewportCappedStartRow, startCol, endCol));\n // Draw middle rows\n const middleRowsCount = viewportCappedEndRow - viewportCappedStartRow - 1;\n documentFragment.appendChild(this._createSelectionElement(viewportCappedStartRow + 1, 0, this._terminal.cols, middleRowsCount));\n // Draw final row\n if (viewportCappedStartRow !== viewportCappedEndRow) {\n // Only draw viewportEndRow if it's not the same as viewporttartRow\n const endCol = viewportEndRow === viewportCappedEndRow ? end[0] : this._terminal.cols;\n documentFragment.appendChild(this._createSelectionElement(viewportCappedEndRow, 0, endCol));\n }\n this._terminal.selectionContainer.appendChild(documentFragment);\n }\n\n /**\n * Creates a selection element at the specified position.\n * @param row The row of the selection.\n * @param colStart The start column.\n * @param colEnd The end columns.\n */\n private _createSelectionElement(row: number, colStart: number, colEnd: number, rowCount: number = 1): HTMLElement {\n const element = document.createElement('div');\n element.style.height = `${rowCount * this._terminal.charMeasure.height}px`;\n element.style.top = `${row * this._terminal.charMeasure.height}px`;\n element.style.left = `${colStart * this._terminal.charMeasure.width}px`;\n element.style.width = `${this._terminal.charMeasure.width * (colEnd - colStart)}px`;\n return element;\n }\n}\n\n\n// If bold is broken, we can't use it in the terminal.\nfunction checkBoldBroken(terminal) {\n const document = terminal.ownerDocument;\n const el = document.createElement('span');\n el.innerHTML = 'hello world';\n terminal.appendChild(el);\n const w1 = el.offsetWidth;\n const h1 = el.offsetHeight;\n el.style.fontWeight = 'bold';\n const w2 = el.offsetWidth;\n const h2 = el.offsetHeight;\n terminal.removeChild(el);\n return w1 !== w2 || h1 !== h2;\n}\n","/**\n * @license MIT\n */\n\nimport * as Mouse from './utils/Mouse';\nimport * as Browser from './utils/Browser';\nimport { CharMeasure } from './utils/CharMeasure';\nimport { CircularList } from './utils/CircularList';\nimport { EventEmitter } from './EventEmitter';\nimport { ITerminal, ICircularList } from './Interfaces';\nimport { SelectionModel } from './SelectionModel';\nimport { translateBufferLineToString } from './utils/BufferLine';\n\n/**\n * The number of pixels the mouse needs to be above or below the viewport in\n * order to scroll at the maximum speed.\n */\nconst DRAG_SCROLL_MAX_THRESHOLD = 50;\n\n/**\n * The maximum scrolling speed\n */\nconst DRAG_SCROLL_MAX_SPEED = 15;\n\n/**\n * The number of milliseconds between drag scroll updates.\n */\nconst DRAG_SCROLL_INTERVAL = 50;\n\n/**\n * A string containing all characters that are considered word separated by the\n * double click to select work logic.\n */\nconst WORD_SEPARATORS = ' ()[]{}\\'\"';\n\n// TODO: Move these constants elsewhere, they belong in a buffer or buffer\n// data/line class.\nconst LINE_DATA_CHAR_INDEX = 1;\nconst LINE_DATA_WIDTH_INDEX = 2;\n\nconst NON_BREAKING_SPACE_CHAR = String.fromCharCode(160);\nconst ALL_NON_BREAKING_SPACE_REGEX = new RegExp(NON_BREAKING_SPACE_CHAR, 'g');\n\n/**\n * Represents a position of a word on a line.\n */\ninterface IWordPosition {\n start: number;\n length: number;\n}\n\n/**\n * A selection mode, this drives how the selection behaves on mouse move.\n */\nenum SelectionMode {\n NORMAL,\n WORD,\n LINE\n}\n\n/**\n * A class that manages the selection of the terminal. With help from\n * SelectionModel, SelectionManager handles with all logic associated with\n * dealing with the selection, including handling mouse interaction, wide\n * characters and fetching the actual text within the selection. Rendering is\n * not handled by the SelectionManager but a 'refresh' event is fired when the\n * selection is ready to be redrawn.\n */\nexport class SelectionManager extends EventEmitter {\n protected _model: SelectionModel;\n\n /**\n * The amount to scroll every drag scroll update (depends on how far the mouse\n * drag is above or below the terminal).\n */\n private _dragScrollAmount: number;\n\n /**\n * The current selection mode.\n */\n private _activeSelectionMode: SelectionMode;\n\n /**\n * A setInterval timer that is active while the mouse is down whose callback\n * scrolls the viewport when necessary.\n */\n private _dragScrollIntervalTimer: NodeJS.Timer;\n\n /**\n * The animation frame ID used for refreshing the selection.\n */\n private _refreshAnimationFrame: number;\n\n /**\n * Whether selection is enabled.\n */\n private _enabled = true;\n\n private _mouseMoveListener: EventListener;\n private _mouseUpListener: EventListener;\n\n constructor(\n private _terminal: ITerminal,\n private _buffer: ICircularList<[number, string, number][]>,\n private _rowContainer: HTMLElement,\n private _charMeasure: CharMeasure\n ) {\n super();\n this._initListeners();\n this.enable();\n\n this._model = new SelectionModel(_terminal);\n this._activeSelectionMode = SelectionMode.NORMAL;\n }\n\n /**\n * Initializes listener variables.\n */\n private _initListeners() {\n this._mouseMoveListener = event => this._onMouseMove(<MouseEvent>event);\n this._mouseUpListener = event => this._onMouseUp(<MouseEvent>event);\n\n this._rowContainer.addEventListener('mousedown', event => this._onMouseDown(<MouseEvent>event));\n\n // Only adjust the selection on trim, shiftElements is rarely used (only in\n // reverseIndex) and delete in a splice is only ever used when the same\n // number of elements was just added. Given this is could actually be\n // beneficial to leave the selection as is for these cases.\n this._buffer.on('trim', (amount: number) => this._onTrim(amount));\n }\n\n /**\n * Disables the selection manager. This is useful for when terminal mouse\n * are enabled.\n */\n public disable() {\n this.clearSelection();\n this._enabled = false;\n }\n\n /**\n * Enable the selection manager.\n */\n public enable() {\n this._enabled = true;\n }\n\n /**\n * Sets the active buffer, this should be called when the alt buffer is\n * switched in or out.\n * @param buffer The active buffer.\n */\n public setBuffer(buffer: ICircularList<[number, string, number][]>): void {\n this._buffer = buffer;\n this.clearSelection();\n }\n\n public get selectionStart(): [number, number] { return this._model.finalSelectionStart; }\n public get selectionEnd(): [number, number] { return this._model.finalSelectionEnd; }\n\n /**\n * Gets whether there is an active text selection.\n */\n public get hasSelection(): boolean {\n const start = this._model.finalSelectionStart;\n const end = this._model.finalSelectionEnd;\n if (!start || !end) {\n return false;\n }\n return start[0] !== end[0] || start[1] !== end[1];\n }\n\n /**\n * Gets the text currently selected.\n */\n public get selectionText(): string {\n const start = this._model.finalSelectionStart;\n const end = this._model.finalSelectionEnd;\n if (!start || !end) {\n return '';\n }\n\n // Get first row\n const startRowEndCol = start[1] === end[1] ? end[0] : null;\n let result: string[] = [];\n result.push(translateBufferLineToString(this._buffer.get(start[1]), true, start[0], startRowEndCol));\n\n // Get middle rows\n for (let i = start[1] + 1; i <= end[1] - 1; i++) {\n const bufferLine = this._buffer.get(i);\n const lineText = translateBufferLineToString(bufferLine, true);\n if ((<any>bufferLine).isWrapped) {\n result[result.length - 1] += lineText;\n } else {\n result.push(lineText);\n }\n }\n\n // Get final row\n if (start[1] !== end[1]) {\n const bufferLine = this._buffer.get(end[1]);\n const lineText = translateBufferLineToString(bufferLine, true, 0, end[0]);\n if ((<any>bufferLine).isWrapped) {\n result[result.length - 1] += lineText;\n } else {\n result.push(lineText);\n }\n }\n\n // Format string by replacing non-breaking space chars with regular spaces\n // and joining the array into a multi-line string.\n const formattedResult = result.map(line => {\n return line.replace(ALL_NON_BREAKING_SPACE_REGEX, ' ');\n }).join(Browser.isMSWindows ? '\\r\\n' : '\\n');\n\n return formattedResult;\n }\n\n /**\n * Clears the current terminal selection.\n */\n public clearSelection(): void {\n this._model.clearSelection();\n this._removeMouseDownListeners();\n this.refresh();\n }\n\n /**\n * Queues a refresh, redrawing the selection on the next opportunity.\n * @param isNewSelection Whether the selection should be registered as a new\n * selection on Linux.\n */\n public refresh(isNewSelection?: boolean): void {\n // Queue the refresh for the renderer\n if (!this._refreshAnimationFrame) {\n this._refreshAnimationFrame = window.requestAnimationFrame(() => this._refresh());\n }\n\n // If the platform is Linux and the refresh call comes from a mouse event,\n // we need to update the selection for middle click to paste selection.\n if (Browser.isLinux && isNewSelection) {\n const selectionText = this.selectionText;\n if (selectionText.length) {\n this.emit('newselection', this.selectionText);\n }\n }\n }\n\n /**\n * Fires the refresh event, causing consumers to pick it up and redraw the\n * selection state.\n */\n private _refresh(): void {\n this._refreshAnimationFrame = null;\n this.emit('refresh', { start: this._model.finalSelectionStart, end: this._model.finalSelectionEnd });\n }\n\n /**\n * Selects all text within the terminal.\n */\n public selectAll(): void {\n this._model.isSelectAllActive = true;\n this.refresh();\n }\n\n /**\n * Handle the buffer being trimmed, adjust the selection position.\n * @param amount The amount the buffer is being trimmed.\n */\n private _onTrim(amount: number) {\n const needsRefresh = this._model.onTrim(amount);\n if (needsRefresh) {\n this.refresh();\n }\n }\n\n /**\n * Gets the 0-based [x, y] buffer coordinates of the current mouse event.\n * @param event The mouse event.\n */\n private _getMouseBufferCoords(event: MouseEvent): [number, number] {\n const coords = Mouse.getCoords(event, this._rowContainer, this._charMeasure, this._terminal.cols, this._terminal.rows, true);\n if (!coords) {\n return null;\n }\n\n // Convert to 0-based\n coords[0]--;\n coords[1]--;\n // Convert viewport coords to buffer coords\n coords[1] += this._terminal.buffer.ydisp;\n return coords;\n }\n\n /**\n * Gets the amount the viewport should be scrolled based on how far out of the\n * terminal the mouse is.\n * @param event The mouse event.\n */\n private _getMouseEventScrollAmount(event: MouseEvent): number {\n let offset = Mouse.getCoordsRelativeToElement(event, this._rowContainer)[1];\n const terminalHeight = this._terminal.rows * this._charMeasure.height;\n if (offset >= 0 && offset <= terminalHeight) {\n return 0;\n }\n if (offset > terminalHeight) {\n offset -= terminalHeight;\n }\n\n offset = Math.min(Math.max(offset, -DRAG_SCROLL_MAX_THRESHOLD), DRAG_SCROLL_MAX_THRESHOLD);\n offset /= DRAG_SCROLL_MAX_THRESHOLD;\n return (offset / Math.abs(offset)) + Math.round(offset * (DRAG_SCROLL_MAX_SPEED - 1));\n }\n\n /**\n * Handles te mousedown event, setting up for a new selection.\n * @param event The mousedown event.\n */\n private _onMouseDown(event: MouseEvent) {\n // If we have selection, we want the context menu on right click even if the\n // terminal is in mouse mode.\n if (event.button === 2 && this.hasSelection) {\n event.stopPropagation();\n return;\n }\n\n // Only action the primary button\n if (event.button !== 0) {\n return;\n }\n\n // Allow selection when using a specific modifier key, even when disabled\n if (!this._enabled) {\n const shouldForceSelection = Browser.isMac && event.altKey;\n\n if (!shouldForceSelection) {\n return;\n }\n\n // Don't send the mouse down event to the current process, we want to select\n event.stopPropagation();\n }\n\n // Tell the browser not to start a regular selection\n event.preventDefault();\n\n // Reset drag scroll state\n this._dragScrollAmount = 0;\n\n if (this._enabled && event.shiftKey) {\n this._onIncrementalClick(event);\n } else {\n if (event.detail === 1) {\n this._onSingleClick(event);\n } else if (event.detail === 2) {\n this._onDoubleClick(event);\n } else if (event.detail === 3) {\n this._onTripleClick(event);\n }\n }\n\n this._addMouseDownListeners();\n this.refresh(true);\n }\n\n /**\n * Adds listeners when mousedown is triggered.\n */\n private _addMouseDownListeners(): void {\n // Listen on the document so that dragging outside of viewport works\n this._rowContainer.ownerDocument.addEventListener('mousemove', this._mouseMoveListener);\n this._rowContainer.ownerDocument.addEventListener('mouseup', this._mouseUpListener);\n this._dragScrollIntervalTimer = setInterval(() => this._dragScroll(), DRAG_SCROLL_INTERVAL);\n }\n\n /**\n * Removes the listeners that are registered when mousedown is triggered.\n */\n private _removeMouseDownListeners(): void {\n this._rowContainer.ownerDocument.removeEventListener('mousemove', this._mouseMoveListener);\n this._rowContainer.ownerDocument.removeEventListener('mouseup', this._mouseUpListener);\n clearInterval(this._dragScrollIntervalTimer);\n this._dragScrollIntervalTimer = null;\n }\n\n /**\n * Performs an incremental click, setting the selection end position to the mouse\n * position.\n * @param event The mouse event.\n */\n private _onIncrementalClick(event: MouseEvent): void {\n if (this._model.selectionStart) {\n this._model.selectionEnd = this._getMouseBufferCoords(event);\n }\n }\n\n /**\n * Performs a single click, resetting relevant state and setting the selection\n * start position.\n * @param event The mouse event.\n */\n private _onSingleClick(event: MouseEvent): void {\n this._model.selectionStartLength = 0;\n this._model.isSelectAllActive = false;\n this._activeSelectionMode = SelectionMode.NORMAL;\n\n // Initialize the new selection\n this._model.selectionStart = this._getMouseBufferCoords(event);\n if (!this._model.selectionStart) {\n return;\n }\n this._model.selectionEnd = null;\n\n // Ensure the line exists\n const line = this._buffer.get(this._model.selectionStart[1]);\n if (!line) {\n return;\n }\n\n // If the mouse is over the second half of a wide character, adjust the\n // selection to cover the whole character\n const char = line[this._model.selectionStart[0]];\n if (char[LINE_DATA_WIDTH_INDEX] === 0) {\n this._model.selectionStart[0]++;\n }\n }\n\n /**\n * Performs a double click, selecting the current work.\n * @param event The mouse event.\n */\n private _onDoubleClick(event: MouseEvent): void {\n const coords = this._getMouseBufferCoords(event);\n if (coords) {\n this._activeSelectionMode = SelectionMode.WORD;\n this._selectWordAt(coords);\n }\n }\n\n /**\n * Performs a triple click, selecting the current line and activating line\n * select mode.\n * @param event The mouse event.\n */\n private _onTripleClick(event: MouseEvent): void {\n const coords = this._getMouseBufferCoords(event);\n if (coords) {\n this._activeSelectionMode = SelectionMode.LINE;\n this._selectLineAt(coords[1]);\n }\n }\n\n /**\n * Handles the mousemove event when the mouse button is down, recording the\n * end of the selection and refreshing the selection.\n * @param event The mousemove event.\n */\n private _onMouseMove(event: MouseEvent) {\n // Record the previous position so we know whether to redraw the selection\n // at the end.\n const previousSelectionEnd = this._model.selectionEnd ? [this._model.selectionEnd[0], this._model.selectionEnd[1]] : null;\n\n // Set the initial selection end based on the mouse coordinates\n this._model.selectionEnd = this._getMouseBufferCoords(event);\n if (!this._model.selectionEnd) {\n this.refresh(true);\n return;\n }\n\n // Select the entire line if line select mode is active.\n if (this._activeSelectionMode === SelectionMode.LINE) {\n if (this._model.selectionEnd[1] < this._model.selectionStart[1]) {\n this._model.selectionEnd[0] = 0;\n } else {\n this._model.selectionEnd[0] = this._terminal.cols;\n }\n } else if (this._activeSelectionMode === SelectionMode.WORD) {\n this._selectToWordAt(this._model.selectionEnd);\n }\n\n // Determine the amount of scrolling that will happen.\n this._dragScrollAmount = this._getMouseEventScrollAmount(event);\n\n // If the cursor was above or below the viewport, make sure it's at the\n // start or end of the viewport respectively.\n if (this._dragScrollAmount > 0) {\n this._model.selectionEnd[0] = this._terminal.cols - 1;\n } else if (this._dragScrollAmount < 0) {\n this._model.selectionEnd[0] = 0;\n }\n\n // If the character is a wide character include the cell to the right in the\n // selection. Note that selections at the very end of the line will never\n // have a character.\n if (this._model.selectionEnd[1] < this._buffer.length) {\n const char = this._buffer.get(this._model.selectionEnd[1])[this._model.selectionEnd[0]];\n if (char && char[2] === 0) {\n this._model.selectionEnd[0]++;\n }\n }\n\n // Only draw here if the selection changes.\n if (!previousSelectionEnd ||\n previousSelectionEnd[0] !== this._model.selectionEnd[0] ||\n previousSelectionEnd[1] !== this._model.selectionEnd[1]) {\n this.refresh(true);\n }\n }\n\n /**\n * The callback that occurs every DRAG_SCROLL_INTERVAL ms that does the\n * scrolling of the viewport.\n */\n private _dragScroll() {\n if (this._dragScrollAmount) {\n this._terminal.scrollDisp(this._dragScrollAmount, false);\n // Re-evaluate selection\n if (this._dragScrollAmount > 0) {\n this._model.selectionEnd = [this._terminal.cols - 1, this._terminal.buffer.ydisp + this._terminal.rows];\n } else {\n this._model.selectionEnd = [0, this._terminal.buffer.ydisp];\n }\n this.refresh();\n }\n }\n\n /**\n * Handles the mouseup event, removing the mousedown listeners.\n * @param event The mouseup event.\n */\n private _onMouseUp(event: MouseEvent) {\n this._removeMouseDownListeners();\n }\n\n /**\n * Converts a viewport column to the character index on the buffer line, the\n * latter takes into account wide characters.\n * @param coords The coordinates to find the 2 index for.\n */\n private _convertViewportColToCharacterIndex(bufferLine: any, coords: [number, number]): number {\n let charIndex = coords[0];\n for (let i = 0; coords[0] >= i; i++) {\n const char = bufferLine[i];\n if (char[LINE_DATA_WIDTH_INDEX] === 0) {\n charIndex--;\n }\n }\n return charIndex;\n }\n\n public setSelection(col: number, row: number, length: number): void {\n this._model.clearSelection();\n this._removeMouseDownListeners();\n this._model.selectionStart = [col, row];\n this._model.selectionStartLength = length;\n this.refresh();\n }\n\n /**\n * Gets positional information for the word at the coordinated specified.\n * @param coords The coordinates to get the word at.\n */\n private _getWordAt(coords: [number, number]): IWordPosition {\n const bufferLine = this._buffer.get(coords[1]);\n if (!bufferLine) {\n return null;\n }\n\n const line = translateBufferLineToString(bufferLine, false);\n\n // Get actual index, taking into consideration wide characters\n let endIndex = this._convertViewportColToCharacterIndex(bufferLine, coords);\n let startIndex = endIndex;\n\n // Record offset to be used later\n const charOffset = coords[0] - startIndex;\n let leftWideCharCount = 0;\n let rightWideCharCount = 0;\n\n if (line.charAt(startIndex) === ' ') {\n // Expand until non-whitespace is hit\n while (startIndex > 0 && line.charAt(startIndex - 1) === ' ') {\n startIndex--;\n }\n while (endIndex < line.length && line.charAt(endIndex + 1) === ' ') {\n endIndex++;\n }\n } else {\n // Expand until whitespace is hit. This algorithm works by scanning left\n // and right from the starting position, keeping both the index format\n // (line) and the column format (bufferLine) in sync. When a wide\n // character is hit, it is recorded and the column index is adjusted.\n let startCol = coords[0];\n let endCol = coords[0];\n // Consider the initial position, skip it and increment the wide char\n // variable\n if (bufferLine[startCol][LINE_DATA_WIDTH_INDEX] === 0) {\n leftWideCharCount++;\n startCol--;\n }\n if (bufferLine[endCol][LINE_DATA_WIDTH_INDEX] === 2) {\n rightWideCharCount++;\n endCol++;\n }\n // Expand the string in both directions until a space is hit\n while (startIndex > 0 && !this._isCharWordSeparator(line.charAt(startIndex - 1))) {\n if (bufferLine[startCol - 1][LINE_DATA_WIDTH_INDEX] === 0) {\n // If the next character is a wide char, record it and skip the column\n leftWideCharCount++;\n startCol--;\n }\n startIndex--;\n startCol--;\n }\n while (endIndex + 1 < line.length && !this._isCharWordSeparator(line.charAt(endIndex + 1))) {\n if (bufferLine[endCol + 1][LINE_DATA_WIDTH_INDEX] === 2) {\n // If the next character is a wide char, record it and skip the column\n rightWideCharCount++;\n endCol++;\n }\n endIndex++;\n endCol++;\n }\n }\n\n const start = startIndex + charOffset - leftWideCharCount;\n const length = Math.min(endIndex - startIndex + leftWideCharCount + rightWideCharCount + 1/*include endIndex char*/, this._terminal.cols);\n return { start, length };\n }\n\n /**\n * Selects the word at the coordinates specified.\n * @param coords The coordinates to get the word at.\n */\n protected _selectWordAt(coords: [number, number]): void {\n const wordPosition = this._getWordAt(coords);\n if (wordPosition) {\n this._model.selectionStart = [wordPosition.start, coords[1]];\n this._model.selectionStartLength = wordPosition.length;\n }\n }\n\n /**\n * Sets the selection end to the word at the coordinated specified.\n * @param coords The coordinates to get the word at.\n */\n private _selectToWordAt(coords: [number, number]): void {\n const wordPosition = this._getWordAt(coords);\n if (wordPosition) {\n this._model.selectionEnd = [this._model.areSelectionValuesReversed() ? wordPosition.start : (wordPosition.start + wordPosition.length), coords[1]];\n }\n }\n\n /**\n * Gets whether the character is considered a word separator by the select\n * word logic.\n * @param char The character to check.\n */\n private _isCharWordSeparator(char: string): boolean {\n return WORD_SEPARATORS.indexOf(char) >= 0;\n }\n\n /**\n * Selects the line specified.\n * @param line The line index.\n */\n protected _selectLineAt(line: number): void {\n this._model.selectionStart = [0, line];\n this._model.selectionStartLength = this._terminal.cols;\n }\n}\n","/**\n * @license MIT\n */\n\nimport { ITerminal } from './Interfaces';\n\n/**\n * Represents a selection within the buffer. This model only cares about column\n * and row coordinates, not wide characters.\n */\nexport class SelectionModel {\n /**\n * Whether select all is currently active.\n */\n public isSelectAllActive: boolean;\n\n /**\n * The [x, y] position the selection starts at.\n */\n public selectionStart: [number, number];\n\n /**\n * The minimal length of the selection from the start position. When double\n * clicking on a word, the word will be selected which makes the selection\n * start at the start of the word and makes this variable the length.\n */\n public selectionStartLength: number;\n\n /**\n * The [x, y] position the selection ends at.\n */\n public selectionEnd: [number, number];\n\n constructor(\n private _terminal: ITerminal\n ) {\n this.clearSelection();\n }\n\n /**\n * Clears the current selection.\n */\n public clearSelection(): void {\n this.selectionStart = null;\n this.selectionEnd = null;\n this.isSelectAllActive = false;\n this.selectionStartLength = 0;\n }\n\n /**\n * The final selection start, taking into consideration select all.\n */\n public get finalSelectionStart(): [number, number] {\n if (this.isSelectAllActive) {\n return [0, 0];\n }\n\n if (!this.selectionEnd || !this.selectionStart) {\n return this.selectionStart;\n }\n\n return this.areSelectionValuesReversed() ? this.selectionEnd : this.selectionStart;\n }\n\n /**\n * The final selection end, taking into consideration select all, double click\n * word selection and triple click line selection.\n */\n public get finalSelectionEnd(): [number, number] {\n if (this.isSelectAllActive) {\n return [this._terminal.cols, this._terminal.buffer.ybase + this._terminal.rows - 1];\n }\n\n if (!this.selectionStart) {\n return null;\n }\n\n // Use the selection start if the end doesn't exist or they're reversed\n if (!this.selectionEnd || this.areSelectionValuesReversed()) {\n return [this.selectionStart[0] + this.selectionStartLength, this.selectionStart[1]];\n }\n\n // Ensure the the word/line is selected after a double/triple click\n if (this.selectionStartLength) {\n // Select the larger of the two when start and end are on the same line\n if (this.selectionEnd[1] === this.selectionStart[1]) {\n return [Math.max(this.selectionStart[0] + this.selectionStartLength, this.selectionEnd[0]), this.selectionEnd[1]];\n }\n }\n return this.selectionEnd;\n }\n\n /**\n * Returns whether the selection start and end are reversed.\n */\n public areSelectionValuesReversed(): boolean {\n const start = this.selectionStart;\n const end = this.selectionEnd;\n return start[1] > end[1] || (start[1] === end[1] && start[0] > end[0]);\n }\n\n /**\n * Handle the buffer being trimmed, adjust the selection position.\n * @param amount The amount the buffer is being trimmed.\n * @return Whether a refresh is necessary.\n */\n public onTrim(amount: number): boolean {\n // Adjust the selection position based on the trimmed amount.\n if (this.selectionStart) {\n this.selectionStart[1] -= amount;\n }\n if (this.selectionEnd) {\n this.selectionEnd[1] -= amount;\n }\n\n // The selection has moved off the buffer, clear it.\n if (this.selectionEnd && this.selectionEnd[1] < 0) {\n this.clearSelection();\n return true;\n }\n\n // If the selection start is trimmed, ensure the start column is 0.\n if (this.selectionStart && this.selectionStart[1] < 0) {\n this.selectionStart[1] = 0;\n }\n return false;\n }\n}\n","/**\n * @license MIT\n */\n\nimport { ITerminal } from './Interfaces';\nimport { CharMeasure } from './utils/CharMeasure';\n\n/**\n * Represents the viewport of a terminal, the visible area within the larger buffer of output.\n * Logic for the virtual scroll bar is included in this object.\n */\nexport class Viewport {\n private currentRowHeight: number;\n private lastRecordedBufferLength: number;\n private lastRecordedViewportHeight: number;\n private lastTouchY: number;\n\n /**\n * Creates a new Viewport.\n * @param terminal The terminal this viewport belongs to.\n * @param viewportElement The DOM element acting as the viewport.\n * @param scrollArea The DOM element acting as the scroll area.\n * @param charMeasure A DOM element used to measure the character size of. the terminal.\n */\n constructor(\n private terminal: ITerminal,\n private viewportElement: HTMLElement,\n private scrollArea: HTMLElement,\n private charMeasure: CharMeasure\n ) {\n this.currentRowHeight = 0;\n this.lastRecordedBufferLength = 0;\n this.lastRecordedViewportHeight = 0;\n\n this.terminal.on('scroll', this.syncScrollArea.bind(this));\n this.terminal.on('resize', this.syncScrollArea.bind(this));\n this.viewportElement.addEventListener('scroll', this.onScroll.bind(this));\n\n // Perform this async to ensure the CharMeasure is ready.\n setTimeout(() => this.syncScrollArea(), 0);\n }\n\n /**\n * Refreshes row height, setting line-height, viewport height and scroll area height if\n * necessary.\n */\n private refresh(): void {\n if (this.charMeasure.height > 0) {\n const rowHeightChanged = this.charMeasure.height !== this.currentRowHeight;\n if (rowHeightChanged) {\n this.currentRowHeight = this.charMeasure.height;\n this.viewportElement.style.lineHeight = this.charMeasure.height + 'px';\n this.terminal.rowContainer.style.lineHeight = this.charMeasure.height + 'px';\n }\n const viewportHeightChanged = this.lastRecordedViewportHeight !== this.terminal.rows;\n if (rowHeightChanged || viewportHeightChanged) {\n this.lastRecordedViewportHeight = this.terminal.rows;\n this.viewportElement.style.height = this.charMeasure.height * this.terminal.rows + 'px';\n this.terminal.selectionContainer.style.height = this.viewportElement.style.height;\n }\n this.scrollArea.style.height = (this.charMeasure.height * this.lastRecordedBufferLength) + 'px';\n }\n }\n\n /**\n * Updates dimensions and synchronizes the scroll area if necessary.\n */\n public syncScrollArea(): void {\n if (this.lastRecordedBufferLength !== this.terminal.buffer.lines.length) {\n // If buffer height changed\n this.lastRecordedBufferLength = this.terminal.buffer.lines.length;\n this.refresh();\n } else if (this.lastRecordedViewportHeight !== this.terminal.rows) {\n // If viewport height changed\n this.refresh();\n } else {\n // If size has changed, refresh viewport\n if (this.charMeasure.height !== this.currentRowHeight) {\n this.refresh();\n }\n }\n\n // Sync scrollTop\n const scrollTop = this.terminal.buffer.ydisp * this.currentRowHeight;\n if (this.viewportElement.scrollTop !== scrollTop) {\n this.viewportElement.scrollTop = scrollTop;\n }\n }\n\n /**\n * Handles scroll events on the viewport, calculating the new viewport and requesting the\n * terminal to scroll to it.\n * @param ev The scroll event.\n */\n private onScroll(ev: Event) {\n const newRow = Math.round(this.viewportElement.scrollTop / this.currentRowHeight);\n const diff = newRow - this.terminal.buffer.ydisp;\n this.terminal.scrollDisp(diff, true);\n }\n\n /**\n * Handles mouse wheel events by adjusting the viewport's scrollTop and delegating the actual\n * scrolling to `onScroll`, this event needs to be attached manually by the consumer of\n * `Viewport`.\n * @param ev The mouse wheel event.\n */\n public onWheel(ev: WheelEvent) {\n if (ev.deltaY === 0) {\n // Do nothing if it's not a vertical scroll event\n return;\n }\n // Fallback to WheelEvent.DOM_DELTA_PIXEL\n let multiplier = 1;\n if (ev.deltaMode === WheelEvent.DOM_DELTA_LINE) {\n multiplier = this.currentRowHeight;\n } else if (ev.deltaMode === WheelEvent.DOM_DELTA_PAGE) {\n multiplier = this.currentRowHeight * this.terminal.rows;\n }\n this.viewportElement.scrollTop += ev.deltaY * multiplier;\n // Prevent the page from scrolling when the terminal scrolls\n ev.preventDefault();\n };\n\n /**\n * Handles the touchstart event, recording the touch occurred.\n * @param ev The touch event.\n */\n public onTouchStart(ev: TouchEvent) {\n this.lastTouchY = ev.touches[0].pageY;\n };\n\n /**\n * Handles the touchmove event, scrolling the viewport if the position shifted.\n * @param ev The touch event.\n */\n public onTouchMove(ev: TouchEvent) {\n let deltaY = this.lastTouchY - ev.touches[0].pageY;\n this.lastTouchY = ev.touches[0].pageY;\n if (deltaY === 0) {\n return;\n }\n this.viewportElement.scrollTop += deltaY;\n ev.preventDefault();\n };\n}\n","/**\n * Clipboard handler module: exports methods for handling all clipboard-related events in the\n * terminal.\n * @module xterm/handlers/Clipboard\n * @license MIT\n */\n\nimport { ITerminal, ISelectionManager } from '../Interfaces';\n\ninterface IWindow extends Window {\n clipboardData?: {\n getData(format: string): string;\n setData(format: string, data: string);\n };\n}\n\ndeclare var window: IWindow;\n\n/**\n * Prepares text to be pasted into the terminal by normalizing the line endings\n * @param text The pasted text that needs processing before inserting into the terminal\n */\nexport function prepareTextForTerminal(text: string, isMSWindows: boolean): string {\n if (isMSWindows) {\n return text.replace(/\\r?\\n/g, '\\r');\n }\n return text;\n}\n\n/**\n * Binds copy functionality to the given terminal.\n * @param {ClipboardEvent} ev The original copy event to be handled\n */\nexport function copyHandler(ev: ClipboardEvent, term: ITerminal, selectionManager: ISelectionManager) {\n if (term.browser.isMSIE) {\n window.clipboardData.setData('Text', selectionManager.selectionText);\n } else {\n ev.clipboardData.setData('text/plain', selectionManager.selectionText);\n }\n\n // Prevent or the original text will be copied.\n ev.preventDefault();\n}\n\n/**\n * Redirect the clipboard's data to the terminal's input handler.\n * @param {ClipboardEvent} ev The original paste event to be handled\n * @param {Terminal} term The terminal on which to apply the handled paste event\n */\nexport function pasteHandler(ev: ClipboardEvent, term: ITerminal) {\n ev.stopPropagation();\n\n let text: string;\n\n let dispatchPaste = function(text) {\n text = prepareTextForTerminal(text, term.browser.isMSWindows);\n term.handler(text);\n term.textarea.value = '';\n term.emit('paste', text);\n\n return term.cancel(ev);\n };\n\n if (term.browser.isMSIE) {\n if (window.clipboardData) {\n text = window.clipboardData.getData('Text');\n dispatchPaste(text);\n }\n } else {\n if (ev.clipboardData) {\n text = ev.clipboardData.getData('text/plain');\n dispatchPaste(text);\n }\n }\n}\n\n/**\n * Moves the textarea under the mouse cursor and focuses it.\n * @param ev The original right click event to be handled.\n * @param textarea The terminal's textarea.\n */\nexport function moveTextAreaUnderMouseCursor(ev: MouseEvent, textarea: HTMLTextAreaElement) {\n // Bring textarea at the cursor position\n textarea.style.position = 'fixed';\n textarea.style.width = '20px';\n textarea.style.height = '20px';\n textarea.style.left = (ev.clientX - 10) + 'px';\n textarea.style.top = (ev.clientY - 10) + 'px';\n textarea.style.zIndex = '1000';\n\n textarea.focus();\n\n // Reset the terminal textarea's styling\n setTimeout(function () {\n textarea.style.position = null;\n textarea.style.width = null;\n textarea.style.height = null;\n textarea.style.left = null;\n textarea.style.top = null;\n textarea.style.zIndex = null;\n }, 4);\n}\n\n/**\n * Bind to right-click event and allow right-click copy and paste.\n * @param ev The original right click event to be handled.\n * @param textarea The terminal's textarea.\n * @param selectionManager The terminal's selection manager.\n */\nexport function rightClickHandler(ev: MouseEvent, textarea: HTMLTextAreaElement, selectionManager: ISelectionManager) {\n moveTextAreaUnderMouseCursor(ev, textarea);\n\n // Get textarea ready to copy from the context menu\n textarea.value = selectionManager.selectionText;\n textarea.select();\n}\n","/**\n * Attributes and methods to help with identifying the current browser and platform.\n * @module xterm/utils/Browser\n * @license MIT\n */\n\nimport { contains } from './Generic';\n\nconst isNode = (typeof navigator === 'undefined') ? true : false;\nconst userAgent = (isNode) ? 'node' : navigator.userAgent;\nconst platform = (isNode) ? 'node' : navigator.platform;\n\nexport const isFirefox = !!~userAgent.indexOf('Firefox');\nexport const isMSIE = !!~userAgent.indexOf('MSIE') || !!~userAgent.indexOf('Trident');\n\n// Find the users platform. We use this to interpret the meta key\n// and ISO third level shifts.\n// http://stackoverflow.com/q/19877924/577598\nexport const isMac = contains(['Macintosh', 'MacIntel', 'MacPPC', 'Mac68K'], platform);\nexport const isIpad = platform === 'iPad';\nexport const isIphone = platform === 'iPhone';\nexport const isMSWindows = contains(['Windows', 'Win16', 'Win32', 'WinCE'], platform);\nexport const isLinux = platform.indexOf('Linux') >= 0;\n","/**\n * @license MIT\n */\n\n// TODO: This module should be merged into a buffer or buffer line class\n\nconst LINE_DATA_CHAR_INDEX = 1;\nconst LINE_DATA_WIDTH_INDEX = 2;\n\n/**\n * Translates a buffer line to a string, with optional start and end columns.\n * Wide characters will count as two columns in the resulting string. This\n * function is useful for getting the actual text underneath the raw selection\n * position.\n * @param line The line being translated.\n * @param trimRight Whether to trim whitespace to the right.\n * @param startCol The column to start at.\n * @param endCol The column to end at.\n */\nexport function translateBufferLineToString(line: any, trimRight: boolean, startCol: number = 0, endCol: number = null): string {\n // Get full line\n let lineString = '';\n let widthAdjustedStartCol = startCol;\n let widthAdjustedEndCol = endCol;\n for (let i = 0; i < line.length; i++) {\n const char = line[i];\n lineString += char[LINE_DATA_CHAR_INDEX];\n // Adjust start and end cols for wide characters if they affect their\n // column indexes\n if (char[LINE_DATA_WIDTH_INDEX] === 0) {\n if (startCol >= i) {\n widthAdjustedStartCol--;\n }\n if (endCol >= i) {\n widthAdjustedEndCol--;\n }\n }\n }\n\n // Calculate the final end col by trimming whitespace on the right of the\n // line if needed.\n let finalEndCol = widthAdjustedEndCol || line.length;\n if (trimRight) {\n const rightWhitespaceIndex = lineString.search(/\\s+$/);\n if (rightWhitespaceIndex !== -1) {\n finalEndCol = Math.min(finalEndCol, rightWhitespaceIndex);\n }\n // Return the empty string if only trimmed whitespace is selected\n if (finalEndCol <= widthAdjustedStartCol) {\n return '';\n }\n }\n\n return lineString.substring(widthAdjustedStartCol, finalEndCol);\n}\n","/**\n * @module xterm/utils/CharMeasure\n * @license MIT\n */\n\nimport { EventEmitter } from '../EventEmitter.js';\n\n/**\n * Utility class that measures the size of a character.\n */\nexport class CharMeasure extends EventEmitter {\n private _document: Document;\n private _parentElement: HTMLElement;\n private _measureElement: HTMLElement;\n private _width: number;\n private _height: number;\n\n constructor(document: Document, parentElement: HTMLElement) {\n super();\n this._document = document;\n this._parentElement = parentElement;\n }\n\n public get width(): number {\n return this._width;\n }\n\n public get height(): number {\n return this._height;\n }\n\n public measure(): void {\n if (!this._measureElement) {\n this._measureElement = this._document.createElement('span');\n this._measureElement.style.position = 'absolute';\n this._measureElement.style.top = '0';\n this._measureElement.style.left = '-9999em';\n this._measureElement.textContent = 'W';\n this._measureElement.setAttribute('aria-hidden', 'true');\n this._parentElement.appendChild(this._measureElement);\n // Perform _doMeasure async if the element was just attached as sometimes\n // getBoundingClientRect does not return accurate values without this.\n setTimeout(() => this._doMeasure(), 0);\n } else {\n this._doMeasure();\n }\n }\n\n private _doMeasure(): void {\n const geometry = this._measureElement.getBoundingClientRect();\n // The element is likely currently display:none, we should retain the\n // previous value.\n if (geometry.width === 0 || geometry.height === 0) {\n return;\n }\n if (this._width !== geometry.width || this._height !== geometry.height) {\n this._width = geometry.width;\n this._height = geometry.height;\n this.emit('charsizechanged');\n }\n }\n}\n","/**\n * Represents a circular list; a list with a maximum size that wraps around when push is called,\n * overriding values at the start of the list.\n * @module xterm/utils/CircularList\n * @license MIT\n */\nimport { EventEmitter } from '../EventEmitter';\nimport { ICircularList } from '../Interfaces';\n\nexport class CircularList<T> extends EventEmitter implements ICircularList<T> {\n private _array: T[];\n private _startIndex: number;\n private _length: number;\n\n constructor(maxLength: number) {\n super();\n this._array = new Array<T>(maxLength);\n this._startIndex = 0;\n this._length = 0;\n }\n\n public get maxLength(): number {\n return this._array.length;\n }\n\n public set maxLength(newMaxLength: number) {\n // Reconstruct array, starting at index 0. Only transfer values from the\n // indexes 0 to length.\n let newArray = new Array<T>(newMaxLength);\n for (let i = 0; i < Math.min(newMaxLength, this.length); i++) {\n newArray[i] = this._array[this._getCyclicIndex(i)];\n }\n this._array = newArray;\n this._startIndex = 0;\n }\n\n public get length(): number {\n return this._length;\n }\n\n public set length(newLength: number) {\n if (newLength > this._length) {\n for (let i = this._length; i < newLength; i++) {\n this._array[i] = undefined;\n }\n }\n this._length = newLength;\n }\n\n public get forEach(): (callbackfn: (value: T, index: number) => void) => void {\n return (callbackfn: (value: T, index: number) => void) => {\n let i = 0;\n let length = this.length;\n for (let i = 0; i < length; i++) {\n callbackfn(this.get(i), i);\n }\n };\n }\n\n /**\n * Gets the value at an index.\n *\n * Note that for performance reasons there is no bounds checking here, the index reference is\n * circular so this should always return a value and never throw.\n * @param index The index of the value to get.\n * @return The value corresponding to the index.\n */\n public get(index: number): T {\n return this._array[this._getCyclicIndex(index)];\n }\n\n /**\n * Sets the value at an index.\n *\n * Note that for performance reasons there is no bounds checking here, the index reference is\n * circular so this should always return a value and never throw.\n * @param index The index to set.\n * @param value The value to set.\n */\n public set(index: number, value: T): void {\n this._array[this._getCyclicIndex(index)] = value;\n }\n\n /**\n * Pushes a new value onto the list, wrapping around to the start of the array, overriding index 0\n * if the maximum length is reached.\n * @param value The value to push onto the list.\n */\n public push(value: T): void {\n this._array[this._getCyclicIndex(this._length)] = value;\n if (this._length === this.maxLength) {\n this._startIndex++;\n if (this._startIndex === this.maxLength) {\n this._startIndex = 0;\n }\n this.emit('trim', 1);\n } else {\n this._length++;\n }\n }\n\n /**\n * Removes and returns the last value on the list.\n * @return The popped value.\n */\n public pop(): T {\n return this._array[this._getCyclicIndex(this._length-- - 1)];\n }\n\n /**\n * Deletes and/or inserts items at a particular index (in that order). Unlike\n * Array.prototype.splice, this operation does not return the deleted items as a new array in\n * order to save creating a new array. Note that this operation may shift all values in the list\n * in the worst case.\n * @param start The index to delete and/or insert.\n * @param deleteCount The number of elements to delete.\n * @param items The items to insert.\n */\n public splice(start: number, deleteCount: number, ...items: T[]): void {\n // Delete items\n if (deleteCount) {\n for (let i = start; i < this._length - deleteCount; i++) {\n this._array[this._getCyclicIndex(i)] = this._array[this._getCyclicIndex(i + deleteCount)];\n }\n this._length -= deleteCount;\n }\n\n if (items && items.length) {\n // Add items\n for (let i = this._length - 1; i >= start; i--) {\n this._array[this._getCyclicIndex(i + items.length)] = this._array[this._getCyclicIndex(i)];\n }\n for (let i = 0; i < items.length; i++) {\n this._array[this._getCyclicIndex(start + i)] = items[i];\n }\n\n // Adjust length as needed\n if (this._length + items.length > this.maxLength) {\n const countToTrim = (this._length + items.length) - this.maxLength;\n this._startIndex += countToTrim;\n this._length = this.maxLength;\n this.emit('trim', countToTrim);\n } else {\n this._length += items.length;\n }\n }\n }\n\n /**\n * Trims a number of items from the start of the list.\n * @param count The number of items to remove.\n */\n public trimStart(count: number): void {\n if (count > this._length) {\n count = this._length;\n }\n this._startIndex += count;\n this._length -= count;\n this.emit('trim', count);\n }\n\n public shiftElements(start: number, count: number, offset: number): void {\n if (count <= 0) {\n return;\n }\n if (start < 0 || start >= this._length) {\n throw new Error('start argument out of range');\n }\n if (start + offset < 0) {\n throw new Error('Cannot shift elements in list beyond index 0');\n }\n\n if (offset > 0) {\n for (let i = count - 1; i >= 0; i--) {\n this.set(start + i + offset, this.get(start + i));\n }\n const expandListBy = (start + count + offset) - this._length;\n if (expandListBy > 0) {\n this._length += expandListBy;\n while (this._length > this.maxLength) {\n this._length--;\n this._startIndex++;\n this.emit('trim', 1);\n }\n }\n } else {\n for (let i = 0; i < count; i++) {\n this.set(start + i + offset, this.get(start + i));\n }\n }\n }\n\n /**\n * Gets the cyclic index for the specified regular index. The cyclic index can then be used on the\n * backing array to get the element associated with the regular index.\n * @param index The regular index.\n * @returns The cyclic index.\n */\n private _getCyclicIndex(index: number): number {\n return (this._startIndex + index) % this.maxLength;\n }\n}\n","/**\n * @module xterm/utils/DomElementObjectPool\n * @license MIT\n */\n\n/**\n * An object pool that manages acquisition and releasing of DOM elements for\n * when reuse is desirable.\n */\nexport class DomElementObjectPool {\n private static readonly OBJECT_ID_ATTRIBUTE = 'data-obj-id';\n\n private static _objectCount = 0;\n\n private _type: string;\n private _pool: HTMLElement[];\n private _inUse: {[key: string]: HTMLElement};\n\n /**\n * @param type The DOM element type (div, span, etc.).\n */\n constructor(private type: string) {\n this._type = type;\n this._pool = [];\n this._inUse = {};\n }\n\n /**\n * Acquire an element from the pool, creating it if the pool is empty.\n */\n public acquire(): HTMLElement {\n let element: HTMLElement;\n if (this._pool.length === 0) {\n element = this._createNew();\n } else {\n element = this._pool.pop();\n }\n this._inUse[element.getAttribute(DomElementObjectPool.OBJECT_ID_ATTRIBUTE)] = element;\n return element;\n }\n\n /**\n * Release an element back into the pool. It's up to the caller of this\n * function to ensure that all external references to the element have been\n * removed.\n * @param element The element being released.\n */\n public release(element: HTMLElement): void {\n if (!this._inUse[element.getAttribute(DomElementObjectPool.OBJECT_ID_ATTRIBUTE)]) {\n throw new Error('Could not release an element not yet acquired');\n }\n delete this._inUse[element.getAttribute(DomElementObjectPool.OBJECT_ID_ATTRIBUTE)];\n this._cleanElement(element);\n this._pool.push(element);\n }\n\n /**\n * Creates a new element for the pool.\n */\n private _createNew(): HTMLElement {\n const element = document.createElement(this._type);\n const id = DomElementObjectPool._objectCount++;\n element.setAttribute(DomElementObjectPool.OBJECT_ID_ATTRIBUTE, id.toString(10));\n return element;\n }\n\n /**\n * Resets an element back to a \"clean state\".\n * @param element The element to be cleaned.\n */\n private _cleanElement(element: HTMLElement): void {\n element.className = '';\n element.innerHTML = '';\n }\n}\n","/**\n * Generic utilities module with methods that can be helpful at different parts of the code base.\n * @module xterm/utils/Generic\n * @license MIT\n */\n\n/**\n * Return if the given array contains the given element\n * @param {Array} array The array to search for the given element.\n * @param {Object} el The element to look for into the array\n */\nexport function contains(arr: any[], el: any) {\n return arr.indexOf(el) >= 0;\n};\n","/**\n * @license MIT\n */\n\nimport { CharMeasure } from './CharMeasure';\n\nexport function getCoordsRelativeToElement(event: MouseEvent, element: HTMLElement): [number, number] {\n // Ignore browsers that don't support MouseEvent.pageX\n if (event.pageX == null) {\n return null;\n }\n\n let x = event.pageX;\n let y = event.pageY;\n\n // Converts the coordinates from being relative to the document to being\n // relative to the terminal.\n while (element && element !== self.document.documentElement) {\n x -= element.offsetLeft;\n y -= element.offsetTop;\n element = 'offsetParent' in element ? <HTMLElement>element.offsetParent : <HTMLElement>element.parentElement;\n }\n return [x, y];\n}\n\n/**\n * Gets coordinates within the terminal for a particular mouse event. The result\n * is returned as an array in the form [x, y] instead of an object as it's a\n * little faster and this function is used in some low level code.\n * @param event The mouse event.\n * @param rowContainer The terminal's row container.\n * @param charMeasure The char measure object used to determine character sizes.\n * @param colCount The number of columns in the terminal.\n * @param rowCount The number of rows n the terminal.\n * @param isSelection Whether the request is for the selection or not. This will\n * apply an offset to the x value such that the left half of the cell will\n * select that cell and the right half will select the next cell.\n */\nexport function getCoords(event: MouseEvent, rowContainer: HTMLElement, charMeasure: CharMeasure, colCount: number, rowCount: number, isSelection?: boolean): [number, number] {\n // Coordinates cannot be measured if charMeasure has not been initialized\n if (!charMeasure.width || !charMeasure.height) {\n return null;\n }\n\n const coords = getCoordsRelativeToElement(event, rowContainer);\n if (!coords) {\n return null;\n }\n\n // Convert to cols/rows.\n coords[0] = Math.ceil((coords[0] + (isSelection ? charMeasure.width / 2 : 0)) / charMeasure.width);\n coords[1] = Math.ceil(coords[1] / charMeasure.height);\n\n // Ensure coordinates are within the terminal viewport.\n coords[0] = Math.min(Math.max(coords[0], 1), colCount + 1);\n coords[1] = Math.min(Math.max(coords[1], 1), rowCount + 1);\n\n return coords;\n}\n\n/**\n * Gets coordinates within the terminal for a particular mouse event, wrapping\n * them to the bounds of the terminal and adding 32 to both the x and y values\n * as expected by xterm.\n * @param event The mouse event.\n * @param rowContainer The terminal's row container.\n * @param charMeasure The char measure object used to determine character sizes.\n * @param colCount The number of columns in the terminal.\n * @param rowCount The number of rows in the terminal.\n */\nexport function getRawByteCoords(event: MouseEvent, rowContainer: HTMLElement, charMeasure: CharMeasure, colCount: number, rowCount: number): { x: number, y: number } {\n const coords = getCoords(event, rowContainer, charMeasure, colCount, rowCount);\n let x = coords[0];\n let y = coords[1];\n\n // xterm sends raw bytes and starts at 32 (SP) for each.\n x += 32;\n y += 32;\n\n return { x, y };\n}\n","/**\n * xterm.js: xterm, in the browser\n * Originally forked from (with the author's permission):\n * Fabrice Bellard's javascript vt100 for jslinux:\n * http://bellard.org/jslinux/\n * Copyright (c) 2011 Fabrice Bellard\n * The original design remains. The terminal itself\n * has been extended to include xterm CSI codes, among\n * other features.\n * @license MIT\n */\n\nimport { BufferSet } from './BufferSet';\nimport { CompositionHelper } from './CompositionHelper';\nimport { EventEmitter } from './EventEmitter';\nimport { Viewport } from './Viewport';\nimport { rightClickHandler, moveTextAreaUnderMouseCursor, pasteHandler, copyHandler } from './handlers/Clipboard';\nimport { CircularList } from './utils/CircularList';\nimport { C0 } from './EscapeSequences';\nimport { InputHandler } from './InputHandler';\nimport { Parser } from './Parser';\nimport { Renderer } from './Renderer';\nimport { Linkifier } from './Linkifier';\nimport { SelectionManager } from './SelectionManager';\nimport { CharMeasure } from './utils/CharMeasure';\nimport * as Browser from './utils/Browser';\nimport * as Mouse from './utils/Mouse';\nimport { CHARSETS } from './Charsets';\nimport { getRawByteCoords } from './utils/Mouse';\nimport { translateBufferLineToString } from './utils/BufferLine';\n\n/**\n * Terminal Emulation References:\n * http://vt100.net/\n * http://invisible-island.net/xterm/ctlseqs/ctlseqs.txt\n * http://invisible-island.net/xterm/ctlseqs/ctlseqs.html\n * http://invisible-island.net/vttest/\n * http://www.inwap.com/pdp10/ansicode.txt\n * http://linux.die.net/man/4/console_codes\n * http://linux.die.net/man/7/urxvt\n */\n\n// Let it work inside Node.js for automated testing purposes.\nvar document = (typeof window != 'undefined') ? window.document : null;\n\n/**\n * The amount of write requests to queue before sending an XOFF signal to the\n * pty process. This number must be small in order for ^C and similar sequences\n * to be responsive.\n */\nvar WRITE_BUFFER_PAUSE_THRESHOLD = 5;\n\n/**\n * The number of writes to perform in a single batch before allowing the\n * renderer to catch up with a 0ms setTimeout.\n */\nvar WRITE_BATCH_SIZE = 300;\n\n/**\n * The time between cursor blinks. This is driven by JS rather than a CSS\n * animation due to a bug in Chromium that causes it to use excessive CPU time.\n * See https://github.com/Microsoft/vscode/issues/22900\n */\nvar CURSOR_BLINK_INTERVAL = 600;\n\n/**\n * Terminal\n */\n\n/**\n * Creates a new `Terminal` object.\n *\n * @param {object} options An object containing a set of options, the available options are:\n * - `cursorBlink` (boolean): Whether the terminal cursor blinks\n * - `cols` (number): The number of columns of the terminal (horizontal size)\n * - `rows` (number): The number of rows of the terminal (vertical size)\n *\n * @public\n * @class Xterm Xterm\n * @alias module:xterm/src/xterm\n */\nfunction Terminal(options) {\n var self = this;\n\n if (!(this instanceof Terminal)) {\n return new Terminal(arguments[0], arguments[1], arguments[2]);\n }\n\n self.browser = Browser;\n self.cancel = Terminal.cancel;\n\n EventEmitter.call(this);\n\n if (typeof options === 'number') {\n options = {\n cols: arguments[0],\n rows: arguments[1],\n handler: arguments[2]\n };\n }\n\n options = options || {};\n\n\n Object.keys(Terminal.defaults).forEach(function(key) {\n if (options[key] == null) {\n options[key] = Terminal.options[key];\n\n if (Terminal[key] !== Terminal.defaults[key]) {\n options[key] = Terminal[key];\n }\n }\n self[key] = options[key];\n });\n\n if (options.colors.length === 8) {\n options.colors = options.colors.concat(Terminal._colors.slice(8));\n } else if (options.colors.length === 16) {\n options.colors = options.colors.concat(Terminal._colors.slice(16));\n } else if (options.colors.length === 10) {\n options.colors = options.colors.slice(0, -2).concat(\n Terminal._colors.slice(8, -2), options.colors.slice(-2));\n } else if (options.colors.length === 18) {\n options.colors = options.colors.concat(\n Terminal._colors.slice(16, -2), options.colors.slice(-2));\n }\n this.colors = options.colors;\n\n this.options = options;\n\n // this.context = options.context || window;\n // this.document = options.document || document;\n this.parent = options.body || options.parent || (\n document ? document.getElementsByTagName('body')[0] : null\n );\n\n this.cols = options.cols || options.geometry[0];\n this.rows = options.rows || options.geometry[1];\n this.geometry = [this.cols, this.rows];\n\n if (options.handler) {\n this.on('data', options.handler);\n }\n\n this.cursorState = 0;\n this.cursorHidden = false;\n this.convertEol;\n this.queue = '';\n this.customKeyEventHandler = null;\n this.cursorBlinkInterval = null;\n\n // modes\n this.applicationKeypad = false;\n this.applicationCursor = false;\n this.originMode = false;\n this.insertMode = false;\n this.wraparoundMode = true; // defaults: xterm - true, vt100 - false\n\n // charset\n this.charset = null;\n this.gcharset = null;\n this.glevel = 0;\n this.charsets = [null];\n\n // mouse properties\n this.decLocator;\n this.x10Mouse;\n this.vt200Mouse;\n this.vt300Mouse;\n this.normalMouse;\n this.mouseEvents;\n this.sendFocus;\n this.utfMouse;\n this.sgrMouse;\n this.urxvtMouse;\n\n // misc\n this.element;\n this.children;\n this.refreshStart;\n this.refreshEnd;\n this.savedX;\n this.savedY;\n this.savedCols;\n\n // stream\n this.readable = true;\n this.writable = true;\n\n this.defAttr = (0 << 18) | (257 << 9) | (256 << 0);\n this.curAttr = this.defAttr;\n\n this.params = [];\n this.currentParam = 0;\n this.prefix = '';\n this.postfix = '';\n\n this.inputHandler = new InputHandler(this);\n this.parser = new Parser(this.inputHandler, this);\n // Reuse renderer if the Terminal is being recreated via a Terminal.reset call.\n this.renderer = this.renderer || null;\n this.selectionManager = this.selectionManager || null;\n this.linkifier = this.linkifier || new Linkifier();\n\n // user input states\n this.writeBuffer = [];\n this.writeInProgress = false;\n\n /**\n * Whether _xterm.js_ sent XOFF in order to catch up with the pty process.\n * This is a distinct state from writeStopped so that if the user requested\n * XOFF via ^S that it will not automatically resume when the writeBuffer goes\n * below threshold.\n */\n this.xoffSentToCatchUp = false;\n\n /** Whether writing has been stopped as a result of XOFF */\n this.writeStopped = false;\n\n // leftover surrogate high from previous write invocation\n this.surrogate_high = '';\n\n // Create the terminal's buffers and set the current buffer\n this.buffers = new BufferSet(this);\n this.buffer = this.buffers.active; // Convenience shortcut;\n this.buffers.on('activate', function (buffer) {\n this._terminal.buffer = buffer;\n });\n\n // Ensure the selection manager has the correct buffer\n if (this.selectionManager) {\n this.selectionManager.setBuffer(this.buffer.lines);\n }\n\n this.setupStops();\n\n // Store if user went browsing history in scrollback\n this.userScrolling = false;\n}\n\ninherits(Terminal, EventEmitter);\n\n/**\n * back_color_erase feature for xterm.\n */\nTerminal.prototype.eraseAttr = function() {\n // if (this.is('screen')) return this.defAttr;\n return (this.defAttr & ~0x1ff) | (this.curAttr & 0x1ff);\n};\n\n/**\n * Colors\n */\n\n// Colors 0-15\nTerminal.tangoColors = [\n // dark:\n '#2e3436',\n '#cc0000',\n '#4e9a06',\n '#c4a000',\n '#3465a4',\n '#75507b',\n '#06989a',\n '#d3d7cf',\n // bright:\n '#555753',\n '#ef2929',\n '#8ae234',\n '#fce94f',\n '#729fcf',\n '#ad7fa8',\n '#34e2e2',\n '#eeeeec'\n];\n\n// Colors 0-15 + 16-255\n// Much thanks to TooTallNate for writing this.\nTerminal.colors = (function() {\n var colors = Terminal.tangoColors.slice()\n , r = [0x00, 0x5f, 0x87, 0xaf, 0xd7, 0xff]\n , i;\n\n // 16-231\n i = 0;\n for (; i < 216; i++) {\n out(r[(i / 36) % 6 | 0], r[(i / 6) % 6 | 0], r[i % 6]);\n }\n\n // 232-255 (grey)\n i = 0;\n for (; i < 24; i++) {\n r = 8 + i * 10;\n out(r, r, r);\n }\n\n function out(r, g, b) {\n colors.push('#' + hex(r) + hex(g) + hex(b));\n }\n\n function hex(c) {\n c = c.toString(16);\n return c.length < 2 ? '0' + c : c;\n }\n\n return colors;\n})();\n\nTerminal._colors = Terminal.colors.slice();\n\nTerminal.vcolors = (function() {\n var out = []\n , colors = Terminal.colors\n , i = 0\n , color;\n\n for (; i < 256; i++) {\n color = parseInt(colors[i].substring(1), 16);\n out.push([\n (color >> 16) & 0xff,\n (color >> 8) & 0xff,\n color & 0xff\n ]);\n }\n\n return out;\n})();\n\n/**\n * Options\n */\n\nTerminal.defaults = {\n colors: Terminal.colors,\n theme: 'default',\n convertEol: false,\n termName: 'xterm',\n geometry: [80, 24],\n cursorBlink: false,\n cursorStyle: 'block',\n visualBell: false,\n popOnBell: false,\n scrollback: 1000,\n screenKeys: false,\n debug: false,\n cancelEvents: false,\n disableStdin: false,\n useFlowControl: false,\n tabStopWidth: 8\n // programFeatures: false,\n // focusKeys: false,\n};\n\nTerminal.options = {};\n\nTerminal.focus = null;\n\neach(keys(Terminal.defaults), function(key) {\n Terminal[key] = Terminal.defaults[key];\n Terminal.options[key] = Terminal.defaults[key];\n});\n\n/**\n * Focus the terminal. Delegates focus handling to the terminal's DOM element.\n */\nTerminal.prototype.focus = function() {\n return this.textarea.focus();\n};\n\n/**\n * Retrieves an option's value from the terminal.\n * @param {string} key The option key.\n */\nTerminal.prototype.getOption = function(key) {\n if (!(key in Terminal.defaults)) {\n throw new Error('No option with key \"' + key + '\"');\n }\n\n if (typeof this.options[key] !== 'undefined') {\n return this.options[key];\n }\n\n return this[key];\n};\n\n/**\n * Sets an option on the terminal.\n * @param {string} key The option key.\n * @param {string} value The option value.\n */\nTerminal.prototype.setOption = function(key, value) {\n if (!(key in Terminal.defaults)) {\n throw new Error('No option with key \"' + key + '\"');\n }\n switch (key) {\n case 'scrollback':\n if (value < this.rows) {\n let msg = 'Setting the scrollback value less than the number of rows ';\n\n msg += `(${this.rows}) is not allowed.`;\n\n console.warn(msg);\n return false;\n }\n\n if (this.options[key] !== value) {\n if (this.buffer.lines.length > value) {\n const amountToTrim = this.buffer.lines.length - value;\n const needsRefresh = (this.buffer.ydisp - amountToTrim < 0);\n this.buffer.lines.trimStart(amountToTrim);\n this.buffer.ybase = Math.max(this.buffer.ybase - amountToTrim, 0);\n this.buffer.ydisp = Math.max(this.buffer.ydisp - amountToTrim, 0);\n if (needsRefresh) {\n this.refresh(0, this.rows - 1);\n }\n }\n this.buffer.lines.maxLength = value;\n this.viewport.syncScrollArea();\n }\n break;\n }\n this[key] = value;\n this.options[key] = value;\n switch (key) {\n case 'cursorBlink': this.setCursorBlinking(value); break;\n case 'cursorStyle':\n this.element.classList.toggle(`xterm-cursor-style-block`, value === 'block');\n this.element.classList.toggle(`xterm-cursor-style-underline`, value === 'underline');\n this.element.classList.toggle(`xterm-cursor-style-bar`, value === 'bar');\n break;\n case 'tabStopWidth': this.setupStops(); break;\n }\n};\n\nTerminal.prototype.restartCursorBlinking = function () {\n this.setCursorBlinking(this.options.cursorBlink);\n};\n\nTerminal.prototype.setCursorBlinking = function (enabled) {\n this.element.classList.toggle('xterm-cursor-blink', enabled);\n this.clearCursorBlinkingInterval();\n if (enabled) {\n var self = this;\n this.cursorBlinkInterval = setInterval(function () {\n self.element.classList.toggle('xterm-cursor-blink-on');\n }, CURSOR_BLINK_INTERVAL);\n }\n};\n\nTerminal.prototype.clearCursorBlinkingInterval = function () {\n this.element.classList.remove('xterm-cursor-blink-on');\n if (this.cursorBlinkInterval) {\n clearInterval(this.cursorBlinkInterval);\n this.cursorBlinkInterval = null;\n }\n};\n\n/**\n * Binds the desired focus behavior on a given terminal object.\n *\n * @static\n */\nTerminal.bindFocus = function (term) {\n on(term.textarea, 'focus', function (ev) {\n if (term.sendFocus) {\n term.send(C0.ESC + '[I');\n }\n term.element.classList.add('focus');\n term.showCursor();\n term.restartCursorBlinking.apply(term);\n Terminal.focus = term;\n term.emit('focus', {terminal: term});\n });\n};\n\n/**\n * Blur the terminal. Delegates blur handling to the terminal's DOM element.\n */\nTerminal.prototype.blur = function() {\n return this.textarea.blur();\n};\n\n/**\n * Binds the desired blur behavior on a given terminal object.\n *\n * @static\n */\nTerminal.bindBlur = function (term) {\n on(term.textarea, 'blur', function (ev) {\n term.refresh(term.buffer.y, term.buffer.y);\n if (term.sendFocus) {\n term.send(C0.ESC + '[O');\n }\n term.element.classList.remove('focus');\n term.clearCursorBlinkingInterval.apply(term);\n Terminal.focus = null;\n term.emit('blur', {terminal: term});\n });\n};\n\n/**\n * Initialize default behavior\n */\nTerminal.prototype.initGlobal = function() {\n var term = this;\n\n Terminal.bindKeys(this);\n Terminal.bindFocus(this);\n Terminal.bindBlur(this);\n\n // Bind clipboard functionality\n on(this.element, 'copy', event => {\n // If mouse events are active it means the selection manager is disabled and\n // copy should be handled by the host program.\n if (!term.hasSelection()) {\n return;\n }\n copyHandler(event, term, this.selectionManager);\n });\n const pasteHandlerWrapper = event => pasteHandler(event, term);\n on(this.textarea, 'paste', pasteHandlerWrapper);\n on(this.element, 'paste', pasteHandlerWrapper);\n\n // Handle right click context menus\n if (term.browser.isFirefox) {\n // Firefox doesn't appear to fire the contextmenu event on right click\n on(this.element, 'mousedown', event => {\n if (event.button == 2) {\n rightClickHandler(event, this.textarea, this.selectionManager);\n }\n });\n } else {\n on(this.element, 'contextmenu', event => {\n rightClickHandler(event, this.textarea, this.selectionManager);\n });\n }\n\n // Move the textarea under the cursor when middle clicking on Linux to ensure\n // middle click to paste selection works. This only appears to work in Chrome\n // at the time is writing.\n if (term.browser.isLinux) {\n // Use auxclick event over mousedown the latter doesn't seem to work. Note\n // that the regular click event doesn't fire for the middle mouse button.\n on(this.element, 'auxclick', event => {\n if (event.button === 1) {\n moveTextAreaUnderMouseCursor(event, this.textarea, this.selectionManager);\n }\n });\n }\n};\n\n/**\n * Apply key handling to the terminal\n */\nTerminal.bindKeys = function(term) {\n on(term.element, 'keydown', function(ev) {\n if (document.activeElement != this) {\n return;\n }\n term.keyDown(ev);\n }, true);\n\n on(term.element, 'keypress', function(ev) {\n if (document.activeElement != this) {\n return;\n }\n term.keyPress(ev);\n }, true);\n\n on(term.element, 'keyup', function(ev) {\n if (!wasMondifierKeyOnlyEvent(ev)) {\n term.focus(term);\n }\n }, true);\n\n on(term.textarea, 'keydown', function(ev) {\n term.keyDown(ev);\n }, true);\n\n on(term.textarea, 'keypress', function(ev) {\n term.keyPress(ev);\n // Truncate the textarea's value, since it is not needed\n this.value = '';\n }, true);\n\n on(term.textarea, 'compositionstart', term.compositionHelper.compositionstart.bind(term.compositionHelper));\n on(term.textarea, 'compositionupdate', term.compositionHelper.compositionupdate.bind(term.compositionHelper));\n on(term.textarea, 'compositionend', term.compositionHelper.compositionend.bind(term.compositionHelper));\n term.on('refresh', term.compositionHelper.updateCompositionElements.bind(term.compositionHelper));\n term.on('refresh', function (data) {\n term.queueLinkification(data.start, data.end)\n });\n};\n\n\n/**\n * Insert the given row to the terminal or produce a new one\n * if no row argument is passed. Return the inserted row.\n * @param {HTMLElement} row (optional) The row to append to the terminal.\n */\nTerminal.prototype.insertRow = function (row) {\n if (typeof row != 'object') {\n row = document.createElement('div');\n }\n\n this.rowContainer.appendChild(row);\n this.children.push(row);\n\n return row;\n};\n\n/**\n * Opens the terminal within an element.\n *\n * @param {HTMLElement} parent The element to create the terminal within.\n * @param {boolean} focus Focus the terminal, after it gets instantiated in the DOM\n */\nTerminal.prototype.open = function(parent, focus) {\n var self=this, i=0, div;\n\n this.parent = parent || this.parent;\n\n if (!this.parent) {\n throw new Error('Terminal requires a parent element.');\n }\n\n // Grab global elements\n this.context = this.parent.ownerDocument.defaultView;\n this.document = this.parent.ownerDocument;\n this.body = this.document.getElementsByTagName('body')[0];\n\n //Create main element container\n this.element = this.document.createElement('div');\n this.element.classList.add('terminal');\n this.element.classList.add('xterm');\n this.element.classList.add('xterm-theme-' + this.theme);\n this.element.classList.add(`xterm-cursor-style-${this.options.cursorStyle}`);\n this.setCursorBlinking(this.options.cursorBlink);\n\n this.element.setAttribute('tabindex', 0);\n\n this.viewportElement = document.createElement('div');\n this.viewportElement.classList.add('xterm-viewport');\n this.element.appendChild(this.viewportElement);\n this.viewportScrollArea = document.createElement('div');\n this.viewportScrollArea.classList.add('xterm-scroll-area');\n this.viewportElement.appendChild(this.viewportScrollArea);\n\n // Create the selection container.\n this.selectionContainer = document.createElement('div');\n this.selectionContainer.classList.add('xterm-selection');\n this.element.appendChild(this.selectionContainer);\n\n // Create the container that will hold the lines of the terminal and then\n // produce the lines the lines.\n this.rowContainer = document.createElement('div');\n this.rowContainer.classList.add('xterm-rows');\n this.element.appendChild(this.rowContainer);\n this.children = [];\n this.linkifier.attachToDom(document, this.children);\n\n // Create the container that will hold helpers like the textarea for\n // capturing DOM Events. Then produce the helpers.\n this.helperContainer = document.createElement('div');\n this.helperContainer.classList.add('xterm-helpers');\n // TODO: This should probably be inserted once it's filled to prevent an additional layout\n this.element.appendChild(this.helperContainer);\n this.textarea = document.createElement('textarea');\n this.textarea.classList.add('xterm-helper-textarea');\n this.textarea.setAttribute('autocorrect', 'off');\n this.textarea.setAttribute('autocapitalize', 'off');\n this.textarea.setAttribute('spellcheck', 'false');\n this.textarea.tabIndex = 0;\n this.textarea.addEventListener('focus', function() {\n self.emit('focus', {terminal: self});\n });\n this.textarea.addEventListener('blur', function() {\n self.emit('blur', {terminal: self});\n });\n this.helperContainer.appendChild(this.textarea);\n\n this.compositionView = document.createElement('div');\n this.compositionView.classList.add('composition-view');\n this.compositionHelper = new CompositionHelper(this.textarea, this.compositionView, this);\n this.helperContainer.appendChild(this.compositionView);\n\n this.charSizeStyleElement = document.createElement('style');\n this.helperContainer.appendChild(this.charSizeStyleElement);\n\n for (; i < this.rows; i++) {\n this.insertRow();\n }\n this.parent.appendChild(this.element);\n\n this.charMeasure = new CharMeasure(document, this.helperContainer);\n this.charMeasure.on('charsizechanged', function () {\n self.updateCharSizeStyles();\n });\n this.charMeasure.measure();\n\n this.viewport = new Viewport(this, this.viewportElement, this.viewportScrollArea, this.charMeasure);\n this.renderer = new Renderer(this);\n this.selectionManager = new SelectionManager(\n this, this.buffer.lines, this.rowContainer, this.charMeasure\n );\n this.selectionManager.on('refresh', data => {\n this.renderer.refreshSelection(data.start, data.end);\n });\n this.selectionManager.on('newselection', text => {\n // If there's a new selection, put it into the textarea, focus and select it\n // in order to register it as a selection on the OS. This event is fired\n // only on Linux to enable middle click to paste selection.\n this.textarea.value = text;\n this.textarea.focus();\n this.textarea.select();\n });\n this.on('scroll', () => this.selectionManager.refresh());\n this.viewportElement.addEventListener('scroll', () => this.selectionManager.refresh());\n\n // Setup loop that draws to screen\n this.refresh(0, this.rows - 1);\n\n // Initialize global actions that\n // need to be taken on the document.\n this.initGlobal();\n\n /**\n * Automatic focus functionality.\n * TODO: Default to `false` starting with xterm.js 3.0.\n */\n if (typeof focus == 'undefined') {\n let message = 'You did not pass the `focus` argument in `Terminal.prototype.open()`.\\n';\n\n message += 'The `focus` argument now defaults to `true` but starting with xterm.js 3.0 ';\n message += 'it will default to `false`.';\n\n console.warn(message);\n focus = true;\n }\n\n if (focus) {\n this.focus();\n }\n\n // Listen for mouse events and translate\n // them into terminal mouse protocols.\n this.bindMouse();\n\n /**\n * This event is emitted when terminal has completed opening.\n *\n * @event open\n */\n this.emit('open');\n};\n\n\n/**\n * Attempts to load an add-on using CommonJS or RequireJS (whichever is available).\n * @param {string} addon The name of the addon to load\n * @static\n */\nTerminal.loadAddon = function(addon, callback) {\n if (typeof exports === 'object' && typeof module === 'object') {\n // CommonJS\n return require('./addons/' + addon + '/' + addon);\n } else if (typeof define == 'function') {\n // RequireJS\n return require(['./addons/' + addon + '/' + addon], callback);\n } else {\n console.error('Cannot load a module without a CommonJS or RequireJS environment.');\n return false;\n }\n};\n\n/**\n * Updates the helper CSS class with any changes necessary after the terminal's\n * character width has been changed.\n */\nTerminal.prototype.updateCharSizeStyles = function() {\n this.charSizeStyleElement.textContent =\n `.xterm-wide-char{width:${this.charMeasure.width * 2}px;}` +\n `.xterm-normal-char{width:${this.charMeasure.width}px;}` +\n `.xterm-rows > div{height:${this.charMeasure.height}px;}`;\n}\n\n/**\n * XTerm mouse events\n * http://invisible-island.net/xterm/ctlseqs/ctlseqs.html#Mouse%20Tracking\n * To better understand these\n * the xterm code is very helpful:\n * Relevant files:\n * button.c, charproc.c, misc.c\n * Relevant functions in xterm/button.c:\n * BtnCode, EmitButtonCode, EditorButton, SendMousePosition\n */\nTerminal.prototype.bindMouse = function() {\n var el = this.element, self = this, pressed = 32;\n\n // mouseup, mousedown, wheel\n // left click: ^[[M 3<^[[M#3<\n // wheel up: ^[[M`3>\n function sendButton(ev) {\n var button\n , pos;\n\n // get the xterm-style button\n button = getButton(ev);\n\n // get mouse coordinates\n pos = getRawByteCoords(ev, self.rowContainer, self.charMeasure, self.cols, self.rows);\n if (!pos) return;\n\n sendEvent(button, pos);\n\n switch (ev.overrideType || ev.type) {\n case 'mousedown':\n pressed = button;\n break;\n case 'mouseup':\n // keep it at the left\n // button, just in case.\n pressed = 32;\n break;\n case 'wheel':\n // nothing. don't\n // interfere with\n // `pressed`.\n break;\n }\n }\n\n // motion example of a left click:\n // ^[[M 3<^[[M@4<^[[M@5<^[[M@6<^[[M@7<^[[M#7<\n function sendMove(ev) {\n var button = pressed\n , pos;\n\n pos = getRawByteCoords(ev, self.rowContainer, self.charMeasure, self.cols, self.rows);\n if (!pos) return;\n\n // buttons marked as motions\n // are incremented by 32\n button += 32;\n\n sendEvent(button, pos);\n }\n\n // encode button and\n // position to characters\n function encode(data, ch) {\n if (!self.utfMouse) {\n if (ch === 255) return data.push(0);\n if (ch > 127) ch = 127;\n data.push(ch);\n } else {\n if (ch === 2047) return data.push(0);\n if (ch < 127) {\n data.push(ch);\n } else {\n if (ch > 2047) ch = 2047;\n data.push(0xC0 | (ch >> 6));\n data.push(0x80 | (ch & 0x3F));\n }\n }\n }\n\n // send a mouse event:\n // regular/utf8: ^[[M Cb Cx Cy\n // urxvt: ^[[ Cb ; Cx ; Cy M\n // sgr: ^[[ Cb ; Cx ; Cy M/m\n // vt300: ^[[ 24(1/3/5)~ [ Cx , Cy ] \\r\n // locator: CSI P e ; P b ; P r ; P c ; P p & w\n function sendEvent(button, pos) {\n // self.emit('mouse', {\n // x: pos.x - 32,\n // y: pos.x - 32,\n // button: button\n // });\n\n if (self.vt300Mouse) {\n // NOTE: Unstable.\n // http://www.vt100.net/docs/vt3xx-gp/chapter15.html\n button &= 3;\n pos.x -= 32;\n pos.y -= 32;\n var data = C0.ESC + '[24';\n if (button === 0) data += '1';\n else if (button === 1) data += '3';\n else if (button === 2) data += '5';\n else if (button === 3) return;\n else data += '0';\n data += '~[' + pos.x + ',' + pos.y + ']\\r';\n self.send(data);\n return;\n }\n\n if (self.decLocator) {\n // NOTE: Unstable.\n button &= 3;\n pos.x -= 32;\n pos.y -= 32;\n if (button === 0) button = 2;\n else if (button === 1) button = 4;\n else if (button === 2) button = 6;\n else if (button === 3) button = 3;\n self.send(C0.ESC + '['\n + button\n + ';'\n + (button === 3 ? 4 : 0)\n + ';'\n + pos.y\n + ';'\n + pos.x\n + ';'\n + (pos.page || 0)\n + '&w');\n return;\n }\n\n if (self.urxvtMouse) {\n pos.x -= 32;\n pos.y -= 32;\n pos.x++;\n pos.y++;\n self.send(C0.ESC + '[' + button + ';' + pos.x + ';' + pos.y + 'M');\n return;\n }\n\n if (self.sgrMouse) {\n pos.x -= 32;\n pos.y -= 32;\n self.send(C0.ESC + '[<'\n + (((button & 3) === 3 ? button & ~3 : button) - 32)\n + ';'\n + pos.x\n + ';'\n + pos.y\n + ((button & 3) === 3 ? 'm' : 'M'));\n return;\n }\n\n var data = [];\n\n encode(data, button);\n encode(data, pos.x);\n encode(data, pos.y);\n\n self.send(C0.ESC + '[M' + String.fromCharCode.apply(String, data));\n }\n\n function getButton(ev) {\n var button\n , shift\n , meta\n , ctrl\n , mod;\n\n // two low bits:\n // 0 = left\n // 1 = middle\n // 2 = right\n // 3 = release\n // wheel up/down:\n // 1, and 2 - with 64 added\n switch (ev.overrideType || ev.type) {\n case 'mousedown':\n button = ev.button != null\n ? +ev.button\n : ev.which != null\n ? ev.which - 1\n : null;\n\n if (self.browser.isMSIE) {\n button = button === 1 ? 0 : button === 4 ? 1 : button;\n }\n break;\n case 'mouseup':\n button = 3;\n break;\n case 'DOMMouseScroll':\n button = ev.detail < 0\n ? 64\n : 65;\n break;\n case 'wheel':\n button = ev.wheelDeltaY > 0\n ? 64\n : 65;\n break;\n }\n\n // next three bits are the modifiers:\n // 4 = shift, 8 = meta, 16 = control\n shift = ev.shiftKey ? 4 : 0;\n meta = ev.metaKey ? 8 : 0;\n ctrl = ev.ctrlKey ? 16 : 0;\n mod = shift | meta | ctrl;\n\n // no mods\n if (self.vt200Mouse) {\n // ctrl only\n mod &= ctrl;\n } else if (!self.normalMouse) {\n mod = 0;\n }\n\n // increment to SP\n button = (32 + (mod << 2)) + button;\n\n return button;\n }\n\n on(el, 'mousedown', function(ev) {\n\n // Prevent the focus on the textarea from getting lost\n // and make sure we get focused on mousedown\n ev.preventDefault();\n self.focus();\n\n if (!self.mouseEvents) return;\n\n // send the button\n sendButton(ev);\n\n // fix for odd bug\n //if (self.vt200Mouse && !self.normalMouse) {\n if (self.vt200Mouse) {\n ev.overrideType = 'mouseup';\n sendButton(ev);\n return self.cancel(ev);\n }\n\n // bind events\n if (self.normalMouse) on(self.document, 'mousemove', sendMove);\n\n // x10 compatibility mode can't send button releases\n if (!self.x10Mouse) {\n on(self.document, 'mouseup', function up(ev) {\n sendButton(ev);\n if (self.normalMouse) off(self.document, 'mousemove', sendMove);\n off(self.document, 'mouseup', up);\n return self.cancel(ev);\n });\n }\n\n return self.cancel(ev);\n });\n\n //if (self.normalMouse) {\n // on(self.document, 'mousemove', sendMove);\n //}\n\n on(el, 'wheel', function(ev) {\n if (!self.mouseEvents) return;\n if (self.x10Mouse\n || self.vt300Mouse\n || self.decLocator) return;\n sendButton(ev);\n return self.cancel(ev);\n });\n\n // allow wheel scrolling in\n // the shell for example\n on(el, 'wheel', function(ev) {\n if (self.mouseEvents) return;\n self.viewport.onWheel(ev);\n return self.cancel(ev);\n });\n\n on(el, 'touchstart', function(ev) {\n if (self.mouseEvents) return;\n self.viewport.onTouchStart(ev);\n return self.cancel(ev);\n });\n\n on(el, 'touchmove', function(ev) {\n if (self.mouseEvents) return;\n self.viewport.onTouchMove(ev);\n return self.cancel(ev);\n });\n};\n\n/**\n * Destroys the terminal.\n */\nTerminal.prototype.destroy = function() {\n this.readable = false;\n this.writable = false;\n this._events = {};\n this.handler = function() {};\n this.write = function() {};\n if (this.element && this.element.parentNode) {\n this.element.parentNode.removeChild(this.element);\n }\n //this.emit('close');\n};\n\n/**\n * Tells the renderer to refresh terminal content between two rows (inclusive) at the next\n * opportunity.\n * @param {number} start The row to start from (between 0 and this.rows - 1).\n * @param {number} end The row to end at (between start and this.rows - 1).\n */\nTerminal.prototype.refresh = function(start, end) {\n if (this.renderer) {\n this.renderer.queueRefresh(start, end);\n }\n};\n\n/**\n * Queues linkification for the specified rows.\n * @param {number} start The row to start from (between 0 and this.rows - 1).\n * @param {number} end The row to end at (between start and this.rows - 1).\n */\nTerminal.prototype.queueLinkification = function(start, end) {\n if (this.linkifier) {\n for (let i = start; i <= end; i++) {\n this.linkifier.linkifyRow(i);\n }\n }\n};\n\n/**\n * Display the cursor element\n */\nTerminal.prototype.showCursor = function() {\n if (!this.cursorState) {\n this.cursorState = 1;\n this.refresh(this.buffer.y, this.buffer.y);\n }\n};\n\n/**\n * Scroll the terminal down 1 row, creating a blank line.\n * @param {boolean} isWrapped Whether the new line is wrapped from the previous\n * line.\n */\nTerminal.prototype.scroll = function(isWrapped) {\n var row;\n\n // Make room for the new row in lines\n if (this.buffer.lines.length === this.buffer.lines.maxLength) {\n this.buffer.lines.trimStart(1);\n this.buffer.ybase--;\n if (this.buffer.ydisp !== 0) {\n this.buffer.ydisp--;\n }\n }\n\n this.buffer.ybase++;\n\n // TODO: Why is this done twice?\n if (!this.userScrolling) {\n this.buffer.ydisp = this.buffer.ybase;\n }\n\n // last line\n row = this.buffer.ybase + this.rows - 1;\n\n // subtract the bottom scroll region\n row -= this.rows - 1 - this.buffer.scrollBottom;\n\n if (row === this.buffer.lines.length) {\n // Optimization: pushing is faster than splicing when they amount to the same behavior\n this.buffer.lines.push(this.blankLine(undefined, isWrapped));\n } else {\n // add our new line\n this.buffer.lines.splice(row, 0, this.blankLine(undefined, isWrapped));\n }\n\n if (this.buffer.scrollTop !== 0) {\n if (this.buffer.ybase !== 0) {\n this.buffer.ybase--;\n if (!this.userScrolling) {\n this.buffer.ydisp = this.buffer.ybase;\n }\n }\n this.buffer.lines.splice(this.buffer.ybase + this.buffer.scrollTop, 1);\n }\n\n // this.maxRange();\n this.updateRange(this.buffer.scrollTop);\n this.updateRange(this.buffer.scrollBottom);\n\n /**\n * This event is emitted whenever the terminal is scrolled.\n * The one parameter passed is the new y display position.\n *\n * @event scroll\n */\n this.emit('scroll', this.buffer.ydisp);\n};\n\n/**\n * Scroll the display of the terminal\n * @param {number} disp The number of lines to scroll down (negatives scroll up).\n * @param {boolean} suppressScrollEvent Don't emit the scroll event as scrollDisp. This is used\n * to avoid unwanted events being handled by the veiwport when the event was triggered from the\n * viewport originally.\n */\nTerminal.prototype.scrollDisp = function(disp, suppressScrollEvent) {\n if (disp < 0) {\n if (this.buffer.ydisp === 0) {\n return;\n }\n this.userScrolling = true;\n } else if (disp + this.buffer.ydisp >= this.buffer.ybase) {\n this.userScrolling = false;\n }\n\n const oldYdisp = this.buffer.ydisp;\n this.buffer.ydisp = Math.max(Math.min(this.buffer.ydisp + disp, this.buffer.ybase), 0);\n\n // No change occurred, don't trigger scroll/refresh\n if (oldYdisp === this.buffer.ydisp) {\n return;\n }\n\n if (!suppressScrollEvent) {\n this.emit('scroll', this.buffer.ydisp);\n }\n\n this.refresh(0, this.rows - 1);\n};\n\n/**\n * Scroll the display of the terminal by a number of pages.\n * @param {number} pageCount The number of pages to scroll (negative scrolls up).\n */\nTerminal.prototype.scrollPages = function(pageCount) {\n this.scrollDisp(pageCount * (this.rows - 1));\n};\n\n/**\n * Scrolls the display of the terminal to the top.\n */\nTerminal.prototype.scrollToTop = function() {\n this.scrollDisp(-this.buffer.ydisp);\n};\n\n/**\n * Scrolls the display of the terminal to the bottom.\n */\nTerminal.prototype.scrollToBottom = function() {\n this.scrollDisp(this.buffer.ybase - this.buffer.ydisp);\n};\n\n/**\n * Writes text to the terminal.\n * @param {string} data The text to write to the terminal.\n */\nTerminal.prototype.write = function(data) {\n this.writeBuffer.push(data);\n\n // Send XOFF to pause the pty process if the write buffer becomes too large so\n // xterm.js can catch up before more data is sent. This is necessary in order\n // to keep signals such as ^C responsive.\n if (this.options.useFlowControl && !this.xoffSentToCatchUp && this.writeBuffer.length >= WRITE_BUFFER_PAUSE_THRESHOLD) {\n // XOFF - stop pty pipe\n // XON will be triggered by emulator before processing data chunk\n this.send(C0.DC3);\n this.xoffSentToCatchUp = true;\n }\n\n if (!this.writeInProgress && this.writeBuffer.length > 0) {\n // Kick off a write which will write all data in sequence recursively\n this.writeInProgress = true;\n // Kick off an async innerWrite so more writes can come in while processing data\n var self = this;\n setTimeout(function () {\n self.innerWrite();\n });\n }\n};\n\nTerminal.prototype.innerWrite = function() {\n var writeBatch = this.writeBuffer.splice(0, WRITE_BATCH_SIZE);\n while (writeBatch.length > 0) {\n var data = writeBatch.shift();\n var l = data.length, i = 0, j, cs, ch, code, low, ch_width, row;\n\n // If XOFF was sent in order to catch up with the pty process, resume it if\n // the writeBuffer is empty to allow more data to come in.\n if (this.xoffSentToCatchUp && writeBatch.length === 0 && this.writeBuffer.length === 0) {\n this.send(C0.DC1);\n this.xoffSentToCatchUp = false;\n }\n\n this.refreshStart = this.buffer.y;\n this.refreshEnd = this.buffer.y;\n\n // HACK: Set the parser state based on it's state at the time of return.\n // This works around the bug #662 which saw the parser state reset in the\n // middle of parsing escape sequence in two chunks. For some reason the\n // state of the parser resets to 0 after exiting parser.parse. This change\n // just sets the state back based on the correct return statement.\n var state = this.parser.parse(data);\n this.parser.setState(state);\n\n this.updateRange(this.buffer.y);\n this.refresh(this.refreshStart, this.refreshEnd);\n }\n if (this.writeBuffer.length > 0) {\n // Allow renderer to catch up before processing the next batch\n var self = this;\n setTimeout(function () {\n self.innerWrite();\n }, 0);\n } else {\n this.writeInProgress = false;\n }\n};\n\n/**\n * Writes text to the terminal, followed by a break line character (\\n).\n * @param {string} data The text to write to the terminal.\n */\nTerminal.prototype.writeln = function(data) {\n this.write(data + '\\r\\n');\n};\n\n/**\n * DEPRECATED: only for backward compatibility. Please use attachCustomKeyEventHandler() instead.\n * @param {function} customKeydownHandler The custom KeyboardEvent handler to attach. This is a\n * function that takes a KeyboardEvent, allowing consumers to stop propogation and/or prevent\n * the default action. The function returns whether the event should be processed by xterm.js.\n */\nTerminal.prototype.attachCustomKeydownHandler = function(customKeydownHandler) {\n let message = 'attachCustomKeydownHandler() is DEPRECATED and will be removed soon. Please use attachCustomKeyEventHandler() instead.';\n console.warn(message);\n this.attachCustomKeyEventHandler(customKeydownHandler);\n};\n\n/**\n * Attaches a custom key event handler which is run before keys are processed, giving consumers of\n * xterm.js ultimate control as to what keys should be processed by the terminal and what keys\n * should not.\n * @param {function} customKeyEventHandler The custom KeyboardEvent handler to attach. This is a\n * function that takes a KeyboardEvent, allowing consumers to stop propogation and/or prevent\n * the default action. The function returns whether the event should be processed by xterm.js.\n */\nTerminal.prototype.attachCustomKeyEventHandler = function(customKeyEventHandler) {\n this.customKeyEventHandler = customKeyEventHandler;\n};\n\n/**\n * Attaches a http(s) link handler, forcing web links to behave differently to\n * regular <a> tags. This will trigger a refresh as links potentially need to be\n * reconstructed. Calling this with null will remove the handler.\n * @param {LinkMatcherHandler} handler The handler callback function.\n */\nTerminal.prototype.setHypertextLinkHandler = function(handler) {\n if (!this.linkifier) {\n throw new Error('Cannot attach a hypertext link handler before Terminal.open is called');\n }\n this.linkifier.setHypertextLinkHandler(handler);\n // Refresh to force links to refresh\n this.refresh(0, this.rows - 1);\n};\n\n/**\n * Attaches a validation callback for hypertext links. This is useful to use\n * validation logic or to do something with the link's element and url.\n * @param {LinkMatcherValidationCallback} callback The callback to use, this can\n * be cleared with null.\n */\nTerminal.prototype.setHypertextValidationCallback = function(callback) {\n if (!this.linkifier) {\n throw new Error('Cannot attach a hypertext validation callback before Terminal.open is called');\n }\n this.linkifier.setHypertextValidationCallback(callback);\n // Refresh to force links to refresh\n this.refresh(0, this.rows - 1);\n};\n\n/**\n * Registers a link matcher, allowing custom link patterns to be matched and\n * handled.\n * @param {RegExp} regex The regular expression to search for, specifically\n * this searches the textContent of the rows. You will want to use \\s to match\n * a space ' ' character for example.\n * @param {LinkMatcherHandler} handler The callback when the link is called.\n * @param {LinkMatcherOptions} [options] Options for the link matcher.\n * @return {number} The ID of the new matcher, this can be used to deregister.\n */\nTerminal.prototype.registerLinkMatcher = function(regex, handler, options) {\n if (this.linkifier) {\n var matcherId = this.linkifier.registerLinkMatcher(regex, handler, options);\n this.refresh(0, this.rows - 1);\n return matcherId;\n }\n};\n\n/**\n * Deregisters a link matcher if it has been registered.\n * @param {number} matcherId The link matcher's ID (returned after register)\n */\nTerminal.prototype.deregisterLinkMatcher = function(matcherId) {\n if (this.linkifier) {\n if (this.linkifier.deregisterLinkMatcher(matcherId)) {\n this.refresh(0, this.rows - 1);\n }\n }\n};\n\n/**\n * Gets whether the terminal has an active selection.\n */\nTerminal.prototype.hasSelection = function() {\n return this.selectionManager ? this.selectionManager.hasSelection : false;\n};\n\n/**\n * Gets the terminal's current selection, this is useful for implementing copy\n * behavior outside of xterm.js.\n */\nTerminal.prototype.getSelection = function() {\n return this.selectionManager ? this.selectionManager.selectionText : '';\n};\n\n/**\n * Clears the current terminal selection.\n */\nTerminal.prototype.clearSelection = function() {\n if (this.selectionManager) {\n this.selectionManager.clearSelection();\n }\n};\n\n/**\n * Selects all text within the terminal.\n */\nTerminal.prototype.selectAll = function() {\n if (this.selectionManager) {\n this.selectionManager.selectAll();\n }\n};\n\n/**\n * Handle a keydown event\n * Key Resources:\n * - https://developer.mozilla.org/en-US/docs/DOM/KeyboardEvent\n * @param {KeyboardEvent} ev The keydown event to be handled.\n */\nTerminal.prototype.keyDown = function(ev) {\n if (this.customKeyEventHandler && this.customKeyEventHandler(ev) === false) {\n return false;\n }\n\n this.restartCursorBlinking();\n\n if (!this.compositionHelper.keydown.bind(this.compositionHelper)(ev)) {\n if (this.buffer.ybase !== this.buffer.ydisp) {\n this.scrollToBottom();\n }\n return false;\n }\n\n var self = this;\n var result = this.evaluateKeyEscapeSequence(ev);\n\n if (result.key === C0.DC3) { // XOFF\n this.writeStopped = true;\n } else if (result.key === C0.DC1) { // XON\n this.writeStopped = false;\n }\n\n if (result.scrollDisp) {\n this.scrollDisp(result.scrollDisp);\n return this.cancel(ev, true);\n }\n\n if (isThirdLevelShift(this, ev)) {\n return true;\n }\n\n if (result.cancel) {\n // The event is canceled at the end already, is this necessary?\n this.cancel(ev, true);\n }\n\n if (!result.key) {\n return true;\n }\n\n this.emit('keydown', ev);\n this.emit('key', result.key, ev);\n this.showCursor();\n this.handler(result.key);\n\n return this.cancel(ev, true);\n};\n\n/**\n * Returns an object that determines how a KeyboardEvent should be handled. The key of the\n * returned value is the new key code to pass to the PTY.\n *\n * Reference: http://invisible-island.net/xterm/ctlseqs/ctlseqs.html\n * @param {KeyboardEvent} ev The keyboard event to be translated to key escape sequence.\n */\nTerminal.prototype.evaluateKeyEscapeSequence = function(ev) {\n var result = {\n // Whether to cancel event propogation (NOTE: this may not be needed since the event is\n // canceled at the end of keyDown\n cancel: false,\n // The new key even to emit\n key: undefined,\n // The number of characters to scroll, if this is defined it will cancel the event\n scrollDisp: undefined\n };\n var modifiers = ev.shiftKey << 0 | ev.altKey << 1 | ev.ctrlKey << 2 | ev.metaKey << 3;\n switch (ev.keyCode) {\n case 8:\n // backspace\n if (ev.shiftKey) {\n result.key = C0.BS; // ^H\n break;\n }\n result.key = C0.DEL; // ^?\n break;\n case 9:\n // tab\n if (ev.shiftKey) {\n result.key = C0.ESC + '[Z';\n break;\n }\n result.key = C0.HT;\n result.cancel = true;\n break;\n case 13:\n // return/enter\n result.key = C0.CR;\n result.cancel = true;\n break;\n case 27:\n // escape\n result.key = C0.ESC;\n result.cancel = true;\n break;\n case 37:\n // left-arrow\n if (modifiers) {\n result.key = C0.ESC + '[1;' + (modifiers + 1) + 'D';\n // HACK: Make Alt + left-arrow behave like Ctrl + left-arrow: move one word backwards\n // http://unix.stackexchange.com/a/108106\n // macOS uses different escape sequences than linux\n if (result.key == C0.ESC + '[1;3D') {\n result.key = (this.browser.isMac) ? C0.ESC + 'b' : C0.ESC + '[1;5D';\n }\n } else if (this.applicationCursor) {\n result.key = C0.ESC + 'OD';\n } else {\n result.key = C0.ESC + '[D';\n }\n break;\n case 39:\n // right-arrow\n if (modifiers) {\n result.key = C0.ESC + '[1;' + (modifiers + 1) + 'C';\n // HACK: Make Alt + right-arrow behave like Ctrl + right-arrow: move one word forward\n // http://unix.stackexchange.com/a/108106\n // macOS uses different escape sequences than linux\n if (result.key == C0.ESC + '[1;3C') {\n result.key = (this.browser.isMac) ? C0.ESC + 'f' : C0.ESC + '[1;5C';\n }\n } else if (this.applicationCursor) {\n result.key = C0.ESC + 'OC';\n } else {\n result.key = C0.ESC + '[C';\n }\n break;\n case 38:\n // up-arrow\n if (modifiers) {\n result.key = C0.ESC + '[1;' + (modifiers + 1) + 'A';\n // HACK: Make Alt + up-arrow behave like Ctrl + up-arrow\n // http://unix.stackexchange.com/a/108106\n if (result.key == C0.ESC + '[1;3A') {\n result.key = C0.ESC + '[1;5A';\n }\n } else if (this.applicationCursor) {\n result.key = C0.ESC + 'OA';\n } else {\n result.key = C0.ESC + '[A';\n }\n break;\n case 40:\n // down-arrow\n if (modifiers) {\n result.key = C0.ESC + '[1;' + (modifiers + 1) + 'B';\n // HACK: Make Alt + down-arrow behave like Ctrl + down-arrow\n // http://unix.stackexchange.com/a/108106\n if (result.key == C0.ESC + '[1;3B') {\n result.key = C0.ESC + '[1;5B';\n }\n } else if (this.applicationCursor) {\n result.key = C0.ESC + 'OB';\n } else {\n result.key = C0.ESC + '[B';\n }\n break;\n case 45:\n // insert\n if (!ev.shiftKey && !ev.ctrlKey) {\n // <Ctrl> or <Shift> + <Insert> are used to\n // copy-paste on some systems.\n result.key = C0.ESC + '[2~';\n }\n break;\n case 46:\n // delete\n if (modifiers) {\n result.key = C0.ESC + '[3;' + (modifiers + 1) + '~';\n } else {\n result.key = C0.ESC + '[3~';\n }\n break;\n case 36:\n // home\n if (modifiers)\n result.key = C0.ESC + '[1;' + (modifiers + 1) + 'H';\n else if (this.applicationCursor)\n result.key = C0.ESC + 'OH';\n else\n result.key = C0.ESC + '[H';\n break;\n case 35:\n // end\n if (modifiers)\n result.key = C0.ESC + '[1;' + (modifiers + 1) + 'F';\n else if (this.applicationCursor)\n result.key = C0.ESC + 'OF';\n else\n result.key = C0.ESC + '[F';\n break;\n case 33:\n // page up\n if (ev.shiftKey) {\n result.scrollDisp = -(this.rows - 1);\n } else {\n result.key = C0.ESC + '[5~';\n }\n break;\n case 34:\n // page down\n if (ev.shiftKey) {\n result.scrollDisp = this.rows - 1;\n } else {\n result.key = C0.ESC + '[6~';\n }\n break;\n case 112:\n // F1-F12\n if (modifiers) {\n result.key = C0.ESC + '[1;' + (modifiers + 1) + 'P';\n } else {\n result.key = C0.ESC + 'OP';\n }\n break;\n case 113:\n if (modifiers) {\n result.key = C0.ESC + '[1;' + (modifiers + 1) + 'Q';\n } else {\n result.key = C0.ESC + 'OQ';\n }\n break;\n case 114:\n if (modifiers) {\n result.key = C0.ESC + '[1;' + (modifiers + 1) + 'R';\n } else {\n result.key = C0.ESC + 'OR';\n }\n break;\n case 115:\n if (modifiers) {\n result.key = C0.ESC + '[1;' + (modifiers + 1) + 'S';\n } else {\n result.key = C0.ESC + 'OS';\n }\n break;\n case 116:\n if (modifiers) {\n result.key = C0.ESC + '[15;' + (modifiers + 1) + '~';\n } else {\n result.key = C0.ESC + '[15~';\n }\n break;\n case 117:\n if (modifiers) {\n result.key = C0.ESC + '[17;' + (modifiers + 1) + '~';\n } else {\n result.key = C0.ESC + '[17~';\n }\n break;\n case 118:\n if (modifiers) {\n result.key = C0.ESC + '[18;' + (modifiers + 1) + '~';\n } else {\n result.key = C0.ESC + '[18~';\n }\n break;\n case 119:\n if (modifiers) {\n result.key = C0.ESC + '[19;' + (modifiers + 1) + '~';\n } else {\n result.key = C0.ESC + '[19~';\n }\n break;\n case 120:\n if (modifiers) {\n result.key = C0.ESC + '[20;' + (modifiers + 1) + '~';\n } else {\n result.key = C0.ESC + '[20~';\n }\n break;\n case 121:\n if (modifiers) {\n result.key = C0.ESC + '[21;' + (modifiers + 1) + '~';\n } else {\n result.key = C0.ESC + '[21~';\n }\n break;\n case 122:\n if (modifiers) {\n result.key = C0.ESC + '[23;' + (modifiers + 1) + '~';\n } else {\n result.key = C0.ESC + '[23~';\n }\n break;\n case 123:\n if (modifiers) {\n result.key = C0.ESC + '[24;' + (modifiers + 1) + '~';\n } else {\n result.key = C0.ESC + '[24~';\n }\n break;\n default:\n // a-z and space\n if (ev.ctrlKey && !ev.shiftKey && !ev.altKey && !ev.metaKey) {\n if (ev.keyCode >= 65 && ev.keyCode <= 90) {\n result.key = String.fromCharCode(ev.keyCode - 64);\n } else if (ev.keyCode === 32) {\n // NUL\n result.key = String.fromCharCode(0);\n } else if (ev.keyCode >= 51 && ev.keyCode <= 55) {\n // escape, file sep, group sep, record sep, unit sep\n result.key = String.fromCharCode(ev.keyCode - 51 + 27);\n } else if (ev.keyCode === 56) {\n // delete\n result.key = String.fromCharCode(127);\n } else if (ev.keyCode === 219) {\n // ^[ - Control Sequence Introducer (CSI)\n result.key = String.fromCharCode(27);\n } else if (ev.keyCode === 220) {\n // ^\\ - String Terminator (ST)\n result.key = String.fromCharCode(28);\n } else if (ev.keyCode === 221) {\n // ^] - Operating System Command (OSC)\n result.key = String.fromCharCode(29);\n }\n } else if (!this.browser.isMac && ev.altKey && !ev.ctrlKey && !ev.metaKey) {\n // On Mac this is a third level shift. Use <Esc> instead.\n if (ev.keyCode >= 65 && ev.keyCode <= 90) {\n result.key = C0.ESC + String.fromCharCode(ev.keyCode + 32);\n } else if (ev.keyCode === 192) {\n result.key = C0.ESC + '`';\n } else if (ev.keyCode >= 48 && ev.keyCode <= 57) {\n result.key = C0.ESC + (ev.keyCode - 48);\n }\n } else if (this.browser.isMac && !ev.altKey && !ev.ctrlKey && ev.metaKey) {\n if (ev.keyCode === 65) { // cmd + a\n this.selectAll();\n }\n }\n break;\n }\n\n return result;\n};\n\n/**\n * Set the G level of the terminal\n * @param g\n */\nTerminal.prototype.setgLevel = function(g) {\n this.glevel = g;\n this.charset = this.charsets[g];\n};\n\n/**\n * Set the charset for the given G level of the terminal\n * @param g\n * @param charset\n */\nTerminal.prototype.setgCharset = function(g, charset) {\n this.charsets[g] = charset;\n if (this.glevel === g) {\n this.charset = charset;\n }\n};\n\n/**\n * Handle a keypress event.\n * Key Resources:\n * - https://developer.mozilla.org/en-US/docs/DOM/KeyboardEvent\n * @param {KeyboardEvent} ev The keypress event to be handled.\n */\nTerminal.prototype.keyPress = function(ev) {\n var key;\n\n if (this.customKeyEventHandler && this.customKeyEventHandler(ev) === false) {\n return false;\n }\n\n this.cancel(ev);\n\n if (ev.charCode) {\n key = ev.charCode;\n } else if (ev.which == null) {\n key = ev.keyCode;\n } else if (ev.which !== 0 && ev.charCode !== 0) {\n key = ev.which;\n } else {\n return false;\n }\n\n if (!key || (\n (ev.altKey || ev.ctrlKey || ev.metaKey) && !isThirdLevelShift(this, ev)\n )) {\n return false;\n }\n\n key = String.fromCharCode(key);\n\n this.emit('keypress', key, ev);\n this.emit('key', key, ev);\n this.showCursor();\n this.handler(key);\n\n return true;\n};\n\n/**\n * Send data for handling to the terminal\n * @param {string} data\n */\nTerminal.prototype.send = function(data) {\n var self = this;\n\n if (!this.queue) {\n setTimeout(function() {\n self.handler(self.queue);\n self.queue = '';\n }, 1);\n }\n\n this.queue += data;\n};\n\n/**\n * Ring the bell.\n * Note: We could do sweet things with webaudio here\n */\nTerminal.prototype.bell = function() {\n if (!this.visualBell) return;\n var self = this;\n this.element.style.borderColor = 'white';\n setTimeout(function() {\n self.element.style.borderColor = '';\n }, 10);\n if (this.popOnBell) this.focus();\n};\n\n/**\n * Log the current state to the console.\n */\nTerminal.prototype.log = function() {\n if (!this.debug) return;\n if (!this.context.console || !this.context.console.log) return;\n var args = Array.prototype.slice.call(arguments);\n this.context.console.log.apply(this.context.console, args);\n};\n\n/**\n * Log the current state as error to the console.\n */\nTerminal.prototype.error = function() {\n if (!this.debug) return;\n if (!this.context.console || !this.context.console.error) return;\n var args = Array.prototype.slice.call(arguments);\n this.context.console.error.apply(this.context.console, args);\n};\n\n/**\n * Resizes the terminal.\n *\n * @param {number} x The number of columns to resize to.\n * @param {number} y The number of rows to resize to.\n */\nTerminal.prototype.resize = function(x, y) {\n if (isNaN(x) || isNaN(y)) {\n return;\n }\n\n if (y > this.getOption('scrollback')) {\n this.setOption('scrollback', y)\n }\n\n var line\n , el\n , i\n , j\n , ch\n , addToY;\n\n if (x === this.cols && y === this.rows) {\n // Check if we still need to measure the char size (fixes #785).\n if (!this.charMeasure.width || !this.charMeasure.height) {\n this.charMeasure.measure();\n }\n return;\n }\n\n if (x < 1) x = 1;\n if (y < 1) y = 1;\n\n this.buffers.resize(x, y);\n\n // Adjust rows in the DOM to accurately reflect the new dimensions\n while (this.children.length < y) {\n this.insertRow();\n }\n while (this.children.length > y) {\n el = this.children.shift();\n if (!el) continue;\n el.parentNode.removeChild(el);\n }\n\n this.cols = x;\n this.rows = y;\n this.setupStops(this.cols);\n\n this.charMeasure.measure();\n\n this.refresh(0, this.rows - 1);\n\n this.geometry = [this.cols, this.rows];\n this.emit('resize', {terminal: this, cols: x, rows: y});\n};\n\n/**\n * Updates the range of rows to refresh\n * @param {number} y The number of rows to refresh next.\n */\nTerminal.prototype.updateRange = function(y) {\n if (y < this.refreshStart) this.refreshStart = y;\n if (y > this.refreshEnd) this.refreshEnd = y;\n // if (y > this.refreshEnd) {\n // this.refreshEnd = y;\n // if (y > this.rows - 1) {\n // this.refreshEnd = this.rows - 1;\n // }\n // }\n};\n\n/**\n * Set the range of refreshing to the maximum value\n */\nTerminal.prototype.maxRange = function() {\n this.refreshStart = 0;\n this.refreshEnd = this.rows - 1;\n};\n\n\n\n/**\n * Setup the tab stops.\n * @param {number} i\n */\nTerminal.prototype.setupStops = function(i) {\n if (i != null) {\n if (!this.buffer.tabs[i]) {\n i = this.prevStop(i);\n }\n } else {\n this.buffer.tabs = {};\n i = 0;\n }\n\n for (; i < this.cols; i += this.getOption('tabStopWidth')) {\n this.buffer.tabs[i] = true;\n }\n};\n\n\n/**\n * Move the cursor to the previous tab stop from the given position (default is current).\n * @param {number} x The position to move the cursor to the previous tab stop.\n */\nTerminal.prototype.prevStop = function(x) {\n if (x == null) x = this.buffer.x;\n while (!this.buffer.tabs[--x] && x > 0);\n return x >= this.cols\n ? this.cols - 1\n : x < 0 ? 0 : x;\n};\n\n\n/**\n * Move the cursor one tab stop forward from the given position (default is current).\n * @param {number} x The position to move the cursor one tab stop forward.\n */\nTerminal.prototype.nextStop = function(x) {\n if (x == null) x = this.buffer.x;\n while (!this.buffer.tabs[++x] && x < this.cols);\n return x >= this.cols\n ? this.cols - 1\n : x < 0 ? 0 : x;\n};\n\n\n/**\n * Erase in the identified line everything from \"x\" to the end of the line (right).\n * @param {number} x The column from which to start erasing to the end of the line.\n * @param {number} y The line in which to operate.\n */\nTerminal.prototype.eraseRight = function(x, y) {\n var line = this.buffer.lines.get(this.buffer.ybase + y);\n if (!line) {\n return;\n }\n var ch = [this.eraseAttr(), ' ', 1]; // xterm\n for (; x < this.cols; x++) {\n line[x] = ch;\n }\n this.updateRange(y);\n};\n\n\n\n/**\n * Erase in the identified line everything from \"x\" to the start of the line (left).\n * @param {number} x The column from which to start erasing to the start of the line.\n * @param {number} y The line in which to operate.\n */\nTerminal.prototype.eraseLeft = function(x, y) {\n var line = this.buffer.lines.get(this.buffer.ybase + y);\n if (!line) {\n return;\n }\n var ch = [this.eraseAttr(), ' ', 1]; // xterm\n x++;\n while (x--) {\n line[x] = ch;\n }\n this.updateRange(y);\n};\n\n/**\n * Clears the entire buffer, making the prompt line the new first line.\n */\nTerminal.prototype.clear = function() {\n if (this.buffer.ybase === 0 && this.buffer.y === 0) {\n // Don't clear if it's already clear\n return;\n }\n this.buffer.lines.set(0, this.buffer.lines.get(this.buffer.ybase + this.buffer.y));\n this.buffer.lines.length = 1;\n this.buffer.ydisp = 0;\n this.buffer.ybase = 0;\n this.buffer.y = 0;\n for (var i = 1; i < this.rows; i++) {\n this.buffer.lines.push(this.blankLine());\n }\n this.refresh(0, this.rows - 1);\n this.emit('scroll', this.buffer.ydisp);\n};\n\n/**\n * Erase all content in the given line\n * @param {number} y The line to erase all of its contents.\n */\nTerminal.prototype.eraseLine = function(y) {\n this.eraseRight(0, y);\n};\n\n\n/**\n * Return the data array of a blank line\n * @param {number} cur First bunch of data for each \"blank\" character.\n * @param {boolean} isWrapped Whether the new line is wrapped from the previous line.\n */\nTerminal.prototype.blankLine = function(cur, isWrapped, cols) {\n var attr = cur\n ? this.eraseAttr()\n : this.defAttr;\n\n var ch = [attr, ' ', 1] // width defaults to 1 halfwidth character\n , line = []\n , i = 0;\n\n // TODO: It is not ideal that this is a property on an array, a buffer line\n // class should be added that will hold this data and other useful functions.\n if (isWrapped) {\n line.isWrapped = isWrapped;\n }\n\n cols = cols || this.cols;\n for (; i < cols; i++) {\n line[i] = ch;\n }\n\n return line;\n};\n\n\n/**\n * If cur return the back color xterm feature attribute. Else return defAttr.\n * @param {object} cur\n */\nTerminal.prototype.ch = function(cur) {\n return cur\n ? [this.eraseAttr(), ' ', 1]\n : [this.defAttr, ' ', 1];\n};\n\n\n/**\n * Evaluate if the current terminal is the given argument.\n * @param {object} term The terminal to evaluate\n */\nTerminal.prototype.is = function(term) {\n var name = this.termName;\n return (name + '').indexOf(term) === 0;\n};\n\n\n/**\n * Emit the 'data' event and populate the given data.\n * @param {string} data The data to populate in the event.\n */\nTerminal.prototype.handler = function(data) {\n // Prevents all events to pty process if stdin is disabled\n if (this.options.disableStdin) {\n return;\n }\n\n // Clear the selection if the selection manager is available and has an active selection\n if (this.selectionManager && this.selectionManager.hasSelection) {\n this.selectionManager.clearSelection();\n }\n\n // Input is being sent to the terminal, the terminal should focus the prompt.\n if (this.buffer.ybase !== this.buffer.ydisp) {\n this.scrollToBottom();\n }\n this.emit('data', data);\n};\n\n\n/**\n * Emit the 'title' event and populate the given title.\n * @param {string} title The title to populate in the event.\n */\nTerminal.prototype.handleTitle = function(title) {\n /**\n * This event is emitted when the title of the terminal is changed\n * from inside the terminal. The parameter is the new title.\n *\n * @event title\n */\n this.emit('title', title);\n};\n\n\n/**\n * ESC\n */\n\n/**\n * ESC D Index (IND is 0x84).\n */\nTerminal.prototype.index = function() {\n this.buffer.y++;\n if (this.buffer.y > this.buffer.scrollBottom) {\n this.buffer.y--;\n this.scroll();\n }\n // If the end of the line is hit, prevent this action from wrapping around to the next line.\n if (this.buffer.x >= this.cols) {\n this.buffer.x--;\n }\n};\n\n\n/**\n * ESC M Reverse Index (RI is 0x8d).\n *\n * Move the cursor up one row, inserting a new blank line if necessary.\n */\nTerminal.prototype.reverseIndex = function() {\n var j;\n if (this.buffer.y === this.buffer.scrollTop) {\n // possibly move the code below to term.reverseScroll();\n // test: echo -ne '\\e[1;1H\\e[44m\\eM\\e[0m'\n // blankLine(true) is xterm/linux behavior\n this.buffer.lines.shiftElements(this.buffer.y + this.buffer.ybase, this.rows - 1, 1);\n this.buffer.lines.set(this.buffer.y + this.buffer.ybase, this.blankLine(true));\n this.updateRange(this.buffer.scrollTop);\n this.updateRange(this.buffer.scrollBottom);\n } else {\n this.buffer.y--;\n }\n};\n\n\n/**\n * ESC c Full Reset (RIS).\n */\nTerminal.prototype.reset = function() {\n this.options.rows = this.rows;\n this.options.cols = this.cols;\n var customKeyEventHandler = this.customKeyEventHandler;\n var cursorBlinkInterval = this.cursorBlinkInterval;\n var inputHandler = this.inputHandler;\n Terminal.call(this, this.options);\n this.customKeyEventHandler = customKeyEventHandler;\n this.cursorBlinkInterval = cursorBlinkInterval;\n this.inputHandler = inputHandler;\n this.refresh(0, this.rows - 1);\n this.viewport.syncScrollArea();\n};\n\n\n/**\n * ESC H Tab Set (HTS is 0x88).\n */\nTerminal.prototype.tabSet = function() {\n this.buffer.tabs[this.buffer.x] = true;\n};\n\n/**\n * Helpers\n */\n\nfunction on(el, type, handler, capture) {\n if (!Array.isArray(el)) {\n el = [el];\n }\n el.forEach(function (element) {\n element.addEventListener(type, handler, capture || false);\n });\n}\n\nfunction off(el, type, handler, capture) {\n el.removeEventListener(type, handler, capture || false);\n}\n\nfunction cancel(ev, force) {\n if (!this.cancelEvents && !force) {\n return;\n }\n ev.preventDefault();\n ev.stopPropagation();\n return false;\n}\n\nfunction inherits(child, parent) {\n function f() {\n this.constructor = child;\n }\n f.prototype = parent.prototype;\n child.prototype = new f;\n}\n\nfunction indexOf(obj, el) {\n var i = obj.length;\n while (i--) {\n if (obj[i] === el) return i;\n }\n return -1;\n}\n\nfunction isThirdLevelShift(term, ev) {\n var thirdLevelKey =\n (term.browser.isMac && ev.altKey && !ev.ctrlKey && !ev.metaKey) ||\n (term.browser.isMSWindows && ev.altKey && ev.ctrlKey && !ev.metaKey);\n\n if (ev.type == 'keypress') {\n return thirdLevelKey;\n }\n\n // Don't invoke for arrows, pageDown, home, backspace, etc. (on non-keypress events)\n return thirdLevelKey && (!ev.keyCode || ev.keyCode > 47);\n}\n\n// Expose to InputHandler (temporary)\nTerminal.prototype.matchColor = matchColor;\n\nfunction matchColor(r1, g1, b1) {\n var hash = (r1 << 16) | (g1 << 8) | b1;\n\n if (matchColor._cache[hash] != null) {\n return matchColor._cache[hash];\n }\n\n var ldiff = Infinity\n , li = -1\n , i = 0\n , c\n , r2\n , g2\n , b2\n , diff;\n\n for (; i < Terminal.vcolors.length; i++) {\n c = Terminal.vcolors[i];\n r2 = c[0];\n g2 = c[1];\n b2 = c[2];\n\n diff = matchColor.distance(r1, g1, b1, r2, g2, b2);\n\n if (diff === 0) {\n li = i;\n break;\n }\n\n if (diff < ldiff) {\n ldiff = diff;\n li = i;\n }\n }\n\n return matchColor._cache[hash] = li;\n}\n\nmatchColor._cache = {};\n\n// http://stackoverflow.com/questions/1633828\nmatchColor.distance = function(r1, g1, b1, r2, g2, b2) {\n return Math.pow(30 * (r1 - r2), 2)\n + Math.pow(59 * (g1 - g2), 2)\n + Math.pow(11 * (b1 - b2), 2);\n};\n\nfunction each(obj, iter, con) {\n if (obj.forEach) return obj.forEach(iter, con);\n for (var i = 0; i < obj.length; i++) {\n iter.call(con, obj[i], i, obj);\n }\n}\n\nfunction wasMondifierKeyOnlyEvent(ev) {\n return ev.keyCode === 16 || // Shift\n ev.keyCode === 17 || // Ctrl\n ev.keyCode === 18; // Alt\n}\n\nfunction keys(obj) {\n if (Object.keys) return Object.keys(obj);\n var key, keys = [];\n for (key in obj) {\n if (Object.prototype.hasOwnProperty.call(obj, key)) {\n keys.push(key);\n }\n }\n return keys;\n}\n\n/**\n * Expose\n */\n\nTerminal.translateBufferLineToString = translateBufferLineToString;\nTerminal.EventEmitter = EventEmitter;\nTerminal.inherits = inherits;\n\n/**\n * Adds an event listener to the terminal.\n *\n * @param {string} event The name of the event. TODO: Document all event types\n * @param {function} callback The function to call when the event is triggered.\n */\nTerminal.on = on;\nTerminal.off = off;\nTerminal.cancel = cancel;\n\nmodule.exports = Terminal;\n","/**\n * Fit terminal columns and rows to the dimensions of its DOM element.\n *\n * ## Approach\n * - Rows: Truncate the division of the terminal parent element height by the terminal row height.\n *\n * - Columns: Truncate the division of the terminal parent element width by the terminal character\n * width (apply display: inline at the terminal row and truncate its width with the current\n * number of columns).\n * @module xterm/addons/fit/fit\n * @license MIT\n */\n\n(function (fit) {\n if (typeof exports === 'object' && typeof module === 'object') {\n /*\n * CommonJS environment\n */\n module.exports = fit(require('../../xterm'));\n } else if (typeof define == 'function') {\n /*\n * Require.js is available\n */\n define(['../../xterm'], fit);\n } else {\n /*\n * Plain browser environment\n */\n fit(window.Terminal);\n }\n})(function (Xterm) {\n var exports = {};\n\n exports.proposeGeometry = function (term) {\n if (!term.element.parentElement) {\n return null;\n }\n var parentElementStyle = window.getComputedStyle(term.element.parentElement),\n parentElementHeight = parseInt(parentElementStyle.getPropertyValue('height')),\n parentElementWidth = Math.max(0, parseInt(parentElementStyle.getPropertyValue('width')) - 17),\n elementStyle = window.getComputedStyle(term.element),\n elementPaddingVer = parseInt(elementStyle.getPropertyValue('padding-top')) + parseInt(elementStyle.getPropertyValue('padding-bottom')),\n elementPaddingHor = parseInt(elementStyle.getPropertyValue('padding-right')) + parseInt(elementStyle.getPropertyValue('padding-left')),\n availableHeight = parentElementHeight - elementPaddingVer,\n availableWidth = parentElementWidth - elementPaddingHor,\n container = term.rowContainer,\n subjectRow = term.rowContainer.firstElementChild,\n contentBuffer = subjectRow.innerHTML,\n characterHeight,\n rows,\n characterWidth,\n cols,\n geometry;\n\n subjectRow.style.display = 'inline';\n subjectRow.innerHTML = 'W'; // Common character for measuring width, although on monospace\n characterWidth = subjectRow.getBoundingClientRect().width;\n subjectRow.style.display = ''; // Revert style before calculating height, since they differ.\n characterHeight = subjectRow.getBoundingClientRect().height;\n subjectRow.innerHTML = contentBuffer;\n\n rows = parseInt(availableHeight / characterHeight);\n cols = parseInt(availableWidth / characterWidth);\n\n geometry = {cols: cols, rows: rows};\n return geometry;\n };\n\n exports.fit = function (term) {\n var geometry = exports.proposeGeometry(term);\n\n if (geometry) {\n term.resize(geometry.cols, geometry.rows);\n }\n };\n\n Xterm.prototype.proposeGeometry = function () {\n return exports.proposeGeometry(this);\n };\n\n Xterm.prototype.fit = function () {\n return exports.fit(this);\n };\n\n return exports;\n});\n","(function webpackUniversalModuleDefinition(root, factory) {\n\tif(typeof exports === 'object' && typeof module === 'object')\n\t\tmodule.exports = factory();\n\telse if(typeof define === 'function' && define.amd)\n\t\tdefine([], factory);\n\telse if(typeof exports === 'object')\n\t\texports[\"io\"] = factory();\n\telse\n\t\troot[\"io\"] = factory();\n})(this, function() {\nreturn \n\n\n// WEBPACK FOOTER //\n// webpack/universalModuleDefinition"," \t// The module cache\n \tvar installedModules = {};\n\n \t// The require function\n \tfunction __webpack_require__(moduleId) {\n\n \t\t// Check if module is in cache\n \t\tif(installedModules[moduleId])\n \t\t\treturn installedModules[moduleId].exports;\n\n \t\t// Create a new module (and put it into the cache)\n \t\tvar module = installedModules[moduleId] = {\n \t\t\texports: {},\n \t\t\tid: moduleId,\n \t\t\tloaded: false\n \t\t};\n\n \t\t// Execute the module function\n \t\tmodules[moduleId].call(module.exports, module, module.exports, __webpack_require__);\n\n \t\t// Flag the module as loaded\n \t\tmodule.loaded = true;\n\n \t\t// Return the exports of the module\n \t\treturn module.exports;\n \t}\n\n\n \t// expose the modules object (__webpack_modules__)\n \t__webpack_require__.m = modules;\n\n \t// expose the module cache\n \t__webpack_require__.c = installedModules;\n\n \t// __webpack_public_path__\n \t__webpack_require__.p = \"\";\n\n \t// Load entry module and return exports\n \treturn __webpack_require__(0);\n\n\n\n// WEBPACK FOOTER //\n// webpack/bootstrap 12f6396a15c60a1e96b0","\n/**\n * Module dependencies.\n */\n\nvar url = require('./url');\nvar parser = require('socket.io-parser');\nvar Manager = require('./manager');\nvar debug = require('debug')('socket.io-client');\n\n/**\n * Module exports.\n */\n\nmodule.exports = exports = lookup;\n\n/**\n * Managers cache.\n */\n\nvar cache = exports.managers = {};\n\n/**\n * Looks up an existing `Manager` for multiplexing.\n * If the user summons:\n *\n * `io('http://localhost/a');`\n * `io('http://localhost/b');`\n *\n * We reuse the existing instance based on same scheme/port/host,\n * and we initialize sockets for each namespace.\n *\n * @api public\n */\n\nfunction lookup (uri, opts) {\n if (typeof uri === 'object') {\n opts = uri;\n uri = undefined;\n }\n\n opts = opts || {};\n\n var parsed = url(uri);\n var source = parsed.source;\n var id = parsed.id;\n var path = parsed.path;\n var sameNamespace = cache[id] && path in cache[id].nsps;\n var newConnection = opts.forceNew || opts['force new connection'] ||\n false === opts.multiplex || sameNamespace;\n\n var io;\n\n if (newConnection) {\n debug('ignoring socket cache for %s', source);\n io = Manager(source, opts);\n } else {\n if (!cache[id]) {\n debug('new io instance for %s', source);\n cache[id] = Manager(source, opts);\n }\n io = cache[id];\n }\n if (parsed.query && !opts.query) {\n opts.query = parsed.query;\n } else if (opts && 'object' === typeof opts.query) {\n opts.query = encodeQueryString(opts.query);\n }\n return io.socket(parsed.path, opts);\n}\n/**\n * Helper method to parse query objects to string.\n * @param {object} query\n * @returns {string}\n */\nfunction encodeQueryString (obj) {\n var str = [];\n for (var p in obj) {\n if (obj.hasOwnProperty(p)) {\n str.push(encodeURIComponent(p) + '=' + encodeURIComponent(obj[p]));\n }\n }\n return str.join('&');\n}\n/**\n * Protocol version.\n *\n * @api public\n */\n\nexports.protocol = parser.protocol;\n\n/**\n * `connect`.\n *\n * @param {String} uri\n * @api public\n */\n\nexports.connect = lookup;\n\n/**\n * Expose constructors for standalone build.\n *\n * @api public\n */\n\nexports.Manager = require('./manager');\nexports.Socket = require('./socket');\n\n\n\n// WEBPACK FOOTER //\n// lib/index.js","\n/**\n * Module dependencies.\n */\n\nvar parseuri = require('parseuri');\nvar debug = require('debug')('socket.io-client:url');\n\n/**\n * Module exports.\n */\n\nmodule.exports = url;\n\n/**\n * URL parser.\n *\n * @param {String} url\n * @param {Object} An object meant to mimic window.location.\n * Defaults to window.location.\n * @api public\n */\n\nfunction url (uri, loc) {\n var obj = uri;\n\n // default to window.location\n loc = loc || global.location;\n if (null == uri) uri = loc.protocol + '//' + loc.host;\n\n // relative path support\n if ('string' === typeof uri) {\n if ('/' === uri.charAt(0)) {\n if ('/' === uri.charAt(1)) {\n uri = loc.protocol + uri;\n } else {\n uri = loc.host + uri;\n }\n }\n\n if (!/^(https?|wss?):\\/\\//.test(uri)) {\n debug('protocol-less url %s', uri);\n if ('undefined' !== typeof loc) {\n uri = loc.protocol + '//' + uri;\n } else {\n uri = 'https://' + uri;\n }\n }\n\n // parse\n debug('parse %s', uri);\n obj = parseuri(uri);\n }\n\n // make sure we treat `localhost:80` and `localhost` equally\n if (!obj.port) {\n if (/^(http|ws)$/.test(obj.protocol)) {\n obj.port = '80';\n } else if (/^(http|ws)s$/.test(obj.protocol)) {\n obj.port = '443';\n }\n }\n\n obj.path = obj.path || '/';\n\n var ipv6 = obj.host.indexOf(':') !== -1;\n var host = ipv6 ? '[' + obj.host + ']' : obj.host;\n\n // define unique id\n obj.id = obj.protocol + '://' + host + ':' + obj.port;\n // define href\n obj.href = obj.protocol + '://' + host + (loc && loc.port === obj.port ? '' : (':' + obj.port));\n\n return obj;\n}\n\n\n\n// WEBPACK FOOTER //\n// lib/url.js","/**\r\n * Parses an URI\r\n *\r\n * @author Steven Levithan <stevenlevithan.com> (MIT license)\r\n * @api private\r\n */\r\n\r\nvar re = /^(?:(?![^:@]+:[^:@\\/]*@)(http|https|ws|wss):\\/\\/)?((?:(([^:@]*)(?::([^:@]*))?)?@)?((?:[a-f0-9]{0,4}:){2,7}[a-f0-9]{0,4}|[^:\\/?#]*)(?::(\\d*))?)(((\\/(?:[^?#](?![^?#\\/]*\\.[^?#\\/.]+(?:[?#]|$)))*\\/?)?([^?#\\/]*))(?:\\?([^#]*))?(?:#(.*))?)/;\r\n\r\nvar parts = [\r\n 'source', 'protocol', 'authority', 'userInfo', 'user', 'password', 'host', 'port', 'relative', 'path', 'directory', 'file', 'query', 'anchor'\r\n];\r\n\r\nmodule.exports = function parseuri(str) {\r\n var src = str,\r\n b = str.indexOf('['),\r\n e = str.indexOf(']');\r\n\r\n if (b != -1 && e != -1) {\r\n str = str.substring(0, b) + str.substring(b, e).replace(/:/g, ';') + str.substring(e, str.length);\r\n }\r\n\r\n var m = re.exec(str || ''),\r\n uri = {},\r\n i = 14;\r\n\r\n while (i--) {\r\n uri[parts[i]] = m[i] || '';\r\n }\r\n\r\n if (b != -1 && e != -1) {\r\n uri.source = src;\r\n uri.host = uri.host.substring(1, uri.host.length - 1).replace(/;/g, ':');\r\n uri.authority = uri.authority.replace('[', '').replace(']', '').replace(/;/g, ':');\r\n uri.ipv6uri = true;\r\n }\r\n\r\n return uri;\r\n};\r\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/parseuri/index.js\n// module id = 2\n// module chunks = 0","\n/**\n * This is the web browser implementation of `debug()`.\n *\n * Expose `debug()` as the module.\n */\n\nexports = module.exports = require('./debug');\nexports.log = log;\nexports.formatArgs = formatArgs;\nexports.save = save;\nexports.load = load;\nexports.useColors = useColors;\nexports.storage = 'undefined' != typeof chrome\n && 'undefined' != typeof chrome.storage\n ? chrome.storage.local\n : localstorage();\n\n/**\n * Colors.\n */\n\nexports.colors = [\n 'lightseagreen',\n 'forestgreen',\n 'goldenrod',\n 'dodgerblue',\n 'darkorchid',\n 'crimson'\n];\n\n/**\n * Currently only WebKit-based Web Inspectors, Firefox >= v31,\n * and the Firebug extension (any Firefox version) are known\n * to support \"%c\" CSS customizations.\n *\n * TODO: add a `localStorage` variable to explicitly enable/disable colors\n */\n\nfunction useColors() {\n // is webkit? http://stackoverflow.com/a/16459606/376773\n // document is undefined in react-native: https://github.com/facebook/react-native/pull/1632\n return (typeof document !== 'undefined' && 'WebkitAppearance' in document.documentElement.style) ||\n // is firebug? http://stackoverflow.com/a/398120/376773\n (window.console && (console.firebug || (console.exception && console.table))) ||\n // is firefox >= v31?\n // https://developer.mozilla.org/en-US/docs/Tools/Web_Console#Styling_messages\n (navigator.userAgent.toLowerCase().match(/firefox\\/(\\d+)/) && parseInt(RegExp.$1, 10) >= 31);\n}\n\n/**\n * Map %j to `JSON.stringify()`, since no Web Inspectors do that by default.\n */\n\nexports.formatters.j = function(v) {\n try {\n return JSON.stringify(v);\n } catch (err) {\n return '[UnexpectedJSONParseError]: ' + err.message;\n }\n};\n\n\n/**\n * Colorize log arguments if enabled.\n *\n * @api public\n */\n\nfunction formatArgs() {\n var args = arguments;\n var useColors = this.useColors;\n\n args[0] = (useColors ? '%c' : '')\n + this.namespace\n + (useColors ? ' %c' : ' ')\n + args[0]\n + (useColors ? '%c ' : ' ')\n + '+' + exports.humanize(this.diff);\n\n if (!useColors) return args;\n\n var c = 'color: ' + this.color;\n args = [args[0], c, 'color: inherit'].concat(Array.prototype.slice.call(args, 1));\n\n // the final \"%c\" is somewhat tricky, because there could be other\n // arguments passed either before or after the %c, so we need to\n // figure out the correct index to insert the CSS into\n var index = 0;\n var lastC = 0;\n args[0].replace(/%[a-z%]/g, function(match) {\n if ('%%' === match) return;\n index++;\n if ('%c' === match) {\n // we only are interested in the *last* %c\n // (the user may have provided their own)\n lastC = index;\n }\n });\n\n args.splice(lastC, 0, c);\n return args;\n}\n\n/**\n * Invokes `console.log()` when available.\n * No-op when `console.log` is not a \"function\".\n *\n * @api public\n */\n\nfunction log() {\n // this hackery is required for IE8/9, where\n // the `console.log` function doesn't have 'apply'\n return 'object' === typeof console\n && console.log\n && Function.prototype.apply.call(console.log, console, arguments);\n}\n\n/**\n * Save `namespaces`.\n *\n * @param {String} namespaces\n * @api private\n */\n\nfunction save(namespaces) {\n try {\n if (null == namespaces) {\n exports.storage.removeItem('debug');\n } else {\n exports.storage.debug = namespaces;\n }\n } catch(e) {}\n}\n\n/**\n * Load `namespaces`.\n *\n * @return {String} returns the previously persisted debug modes\n * @api private\n */\n\nfunction load() {\n var r;\n try {\n return exports.storage.debug;\n } catch(e) {}\n\n // If debug isn't set in LS, and we're in Electron, try to load $DEBUG\n if (typeof process !== 'undefined' && 'env' in process) {\n return process.env.DEBUG;\n }\n}\n\n/**\n * Enable namespaces listed in `localStorage.debug` initially.\n */\n\nexports.enable(load());\n\n/**\n * Localstorage attempts to return the localstorage.\n *\n * This is necessary because safari throws\n * when a user disables cookies/localstorage\n * and you attempt to access it.\n *\n * @return {LocalStorage}\n * @api private\n */\n\nfunction localstorage(){\n try {\n return window.localStorage;\n } catch (e) {}\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/debug/browser.js\n// module id = 3\n// module chunks = 0","// shim for using process in browser\nvar process = module.exports = {};\n\n// cached from whatever global is present so that test runners that stub it\n// don't break things. But we need to wrap it in a try catch in case it is\n// wrapped in strict mode code which doesn't define any globals. It's inside a\n// function because try/catches deoptimize in certain engines.\n\nvar cachedSetTimeout;\nvar cachedClearTimeout;\n\nfunction defaultSetTimout() {\n throw new Error('setTimeout has not been defined');\n}\nfunction defaultClearTimeout () {\n throw new Error('clearTimeout has not been defined');\n}\n(function () {\n try {\n if (typeof setTimeout === 'function') {\n cachedSetTimeout = setTimeout;\n } else {\n cachedSetTimeout = defaultSetTimout;\n }\n } catch (e) {\n cachedSetTimeout = defaultSetTimout;\n }\n try {\n if (typeof clearTimeout === 'function') {\n cachedClearTimeout = clearTimeout;\n } else {\n cachedClearTimeout = defaultClearTimeout;\n }\n } catch (e) {\n cachedClearTimeout = defaultClearTimeout;\n }\n} ())\nfunction runTimeout(fun) {\n if (cachedSetTimeout === setTimeout) {\n //normal enviroments in sane situations\n return setTimeout(fun, 0);\n }\n // if setTimeout wasn't available but was latter defined\n if ((cachedSetTimeout === defaultSetTimout || !cachedSetTimeout) && setTimeout) {\n cachedSetTimeout = setTimeout;\n return setTimeout(fun, 0);\n }\n try {\n // when when somebody has screwed with setTimeout but no I.E. maddness\n return cachedSetTimeout(fun, 0);\n } catch(e){\n try {\n // When we are in I.E. but the script has been evaled so I.E. doesn't trust the global object when called normally\n return cachedSetTimeout.call(null, fun, 0);\n } catch(e){\n // same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error\n return cachedSetTimeout.call(this, fun, 0);\n }\n }\n\n\n}\nfunction runClearTimeout(marker) {\n if (cachedClearTimeout === clearTimeout) {\n //normal enviroments in sane situations\n return clearTimeout(marker);\n }\n // if clearTimeout wasn't available but was latter defined\n if ((cachedClearTimeout === defaultClearTimeout || !cachedClearTimeout) && clearTimeout) {\n cachedClearTimeout = clearTimeout;\n return clearTimeout(marker);\n }\n try {\n // when when somebody has screwed with setTimeout but no I.E. maddness\n return cachedClearTimeout(marker);\n } catch (e){\n try {\n // When we are in I.E. but the script has been evaled so I.E. doesn't trust the global object when called normally\n return cachedClearTimeout.call(null, marker);\n } catch (e){\n // same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error.\n // Some versions of I.E. have different rules for clearTimeout vs setTimeout\n return cachedClearTimeout.call(this, marker);\n }\n }\n\n\n\n}\nvar queue = [];\nvar draining = false;\nvar currentQueue;\nvar queueIndex = -1;\n\nfunction cleanUpNextTick() {\n if (!draining || !currentQueue) {\n return;\n }\n draining = false;\n if (currentQueue.length) {\n queue = currentQueue.concat(queue);\n } else {\n queueIndex = -1;\n }\n if (queue.length) {\n drainQueue();\n }\n}\n\nfunction drainQueue() {\n if (draining) {\n return;\n }\n var timeout = runTimeout(cleanUpNextTick);\n draining = true;\n\n var len = queue.length;\n while(len) {\n currentQueue = queue;\n queue = [];\n while (++queueIndex < len) {\n if (currentQueue) {\n currentQueue[queueIndex].run();\n }\n }\n queueIndex = -1;\n len = queue.length;\n }\n currentQueue = null;\n draining = false;\n runClearTimeout(timeout);\n}\n\nprocess.nextTick = function (fun) {\n var args = new Array(arguments.length - 1);\n if (arguments.length > 1) {\n for (var i = 1; i < arguments.length; i++) {\n args[i - 1] = arguments[i];\n }\n }\n queue.push(new Item(fun, args));\n if (queue.length === 1 && !draining) {\n runTimeout(drainQueue);\n }\n};\n\n// v8 likes predictible objects\nfunction Item(fun, array) {\n this.fun = fun;\n this.array = array;\n}\nItem.prototype.run = function () {\n this.fun.apply(null, this.array);\n};\nprocess.title = 'browser';\nprocess.browser = true;\nprocess.env = {};\nprocess.argv = [];\nprocess.version = ''; // empty string to avoid regexp issues\nprocess.versions = {};\n\nfunction noop() {}\n\nprocess.on = noop;\nprocess.addListener = noop;\nprocess.once = noop;\nprocess.off = noop;\nprocess.removeListener = noop;\nprocess.removeAllListeners = noop;\nprocess.emit = noop;\n\nprocess.binding = function (name) {\n throw new Error('process.binding is not supported');\n};\n\nprocess.cwd = function () { return '/' };\nprocess.chdir = function (dir) {\n throw new Error('process.chdir is not supported');\n};\nprocess.umask = function() { return 0; };\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/process/browser.js\n// module id = 4\n// module chunks = 0","\n/**\n * This is the common logic for both the Node.js and web browser\n * implementations of `debug()`.\n *\n * Expose `debug()` as the module.\n */\n\nexports = module.exports = debug.debug = debug;\nexports.coerce = coerce;\nexports.disable = disable;\nexports.enable = enable;\nexports.enabled = enabled;\nexports.humanize = require('ms');\n\n/**\n * The currently active debug mode names, and names to skip.\n */\n\nexports.names = [];\nexports.skips = [];\n\n/**\n * Map of special \"%n\" handling functions, for the debug \"format\" argument.\n *\n * Valid key names are a single, lowercased letter, i.e. \"n\".\n */\n\nexports.formatters = {};\n\n/**\n * Previously assigned color.\n */\n\nvar prevColor = 0;\n\n/**\n * Previous log timestamp.\n */\n\nvar prevTime;\n\n/**\n * Select a color.\n *\n * @return {Number}\n * @api private\n */\n\nfunction selectColor() {\n return exports.colors[prevColor++ % exports.colors.length];\n}\n\n/**\n * Create a debugger with the given `namespace`.\n *\n * @param {String} namespace\n * @return {Function}\n * @api public\n */\n\nfunction debug(namespace) {\n\n // define the `disabled` version\n function disabled() {\n }\n disabled.enabled = false;\n\n // define the `enabled` version\n function enabled() {\n\n var self = enabled;\n\n // set `diff` timestamp\n var curr = +new Date();\n var ms = curr - (prevTime || curr);\n self.diff = ms;\n self.prev = prevTime;\n self.curr = curr;\n prevTime = curr;\n\n // add the `color` if not set\n if (null == self.useColors) self.useColors = exports.useColors();\n if (null == self.color && self.useColors) self.color = selectColor();\n\n var args = new Array(arguments.length);\n for (var i = 0; i < args.length; i++) {\n args[i] = arguments[i];\n }\n\n args[0] = exports.coerce(args[0]);\n\n if ('string' !== typeof args[0]) {\n // anything else let's inspect with %o\n args = ['%o'].concat(args);\n }\n\n // apply any `formatters` transformations\n var index = 0;\n args[0] = args[0].replace(/%([a-z%])/g, function(match, format) {\n // if we encounter an escaped % then don't increase the array index\n if (match === '%%') return match;\n index++;\n var formatter = exports.formatters[format];\n if ('function' === typeof formatter) {\n var val = args[index];\n match = formatter.call(self, val);\n\n // now we need to remove `args[index]` since it's inlined in the `format`\n args.splice(index, 1);\n index--;\n }\n return match;\n });\n\n // apply env-specific formatting\n args = exports.formatArgs.apply(self, args);\n\n var logFn = enabled.log || exports.log || console.log.bind(console);\n logFn.apply(self, args);\n }\n enabled.enabled = true;\n\n var fn = exports.enabled(namespace) ? enabled : disabled;\n\n fn.namespace = namespace;\n\n return fn;\n}\n\n/**\n * Enables a debug mode by namespaces. This can include modes\n * separated by a colon and wildcards.\n *\n * @param {String} namespaces\n * @api public\n */\n\nfunction enable(namespaces) {\n exports.save(namespaces);\n\n var split = (namespaces || '').split(/[\\s,]+/);\n var len = split.length;\n\n for (var i = 0; i < len; i++) {\n if (!split[i]) continue; // ignore empty strings\n namespaces = split[i].replace(/[\\\\^$+?.()|[\\]{}]/g, '\\\\$&').replace(/\\*/g, '.*?');\n if (namespaces[0] === '-') {\n exports.skips.push(new RegExp('^' + namespaces.substr(1) + '$'));\n } else {\n exports.names.push(new RegExp('^' + namespaces + '$'));\n }\n }\n}\n\n/**\n * Disable debug output.\n *\n * @api public\n */\n\nfunction disable() {\n exports.enable('');\n}\n\n/**\n * Returns true if the given mode name is enabled, false otherwise.\n *\n * @param {String} name\n * @return {Boolean}\n * @api public\n */\n\nfunction enabled(name) {\n var i, len;\n for (i = 0, len = exports.skips.length; i < len; i++) {\n if (exports.skips[i].test(name)) {\n return false;\n }\n }\n for (i = 0, len = exports.names.length; i < len; i++) {\n if (exports.names[i].test(name)) {\n return true;\n }\n }\n return false;\n}\n\n/**\n * Coerce `val`.\n *\n * @param {Mixed} val\n * @return {Mixed}\n * @api private\n */\n\nfunction coerce(val) {\n if (val instanceof Error) return val.stack || val.message;\n return val;\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/debug/debug.js\n// module id = 5\n// module chunks = 0","/**\n * Helpers.\n */\n\nvar s = 1000\nvar m = s * 60\nvar h = m * 60\nvar d = h * 24\nvar y = d * 365.25\n\n/**\n * Parse or format the given `val`.\n *\n * Options:\n *\n * - `long` verbose formatting [false]\n *\n * @param {String|Number} val\n * @param {Object} options\n * @throws {Error} throw an error if val is not a non-empty string or a number\n * @return {String|Number}\n * @api public\n */\n\nmodule.exports = function (val, options) {\n options = options || {}\n var type = typeof val\n if (type === 'string' && val.length > 0) {\n return parse(val)\n } else if (type === 'number' && isNaN(val) === false) {\n return options.long ?\n\t\t\tfmtLong(val) :\n\t\t\tfmtShort(val)\n }\n throw new Error('val is not a non-empty string or a valid number. val=' + JSON.stringify(val))\n}\n\n/**\n * Parse the given `str` and return milliseconds.\n *\n * @param {String} str\n * @return {Number}\n * @api private\n */\n\nfunction parse(str) {\n str = String(str)\n if (str.length > 10000) {\n return\n }\n var match = /^((?:\\d+)?\\.?\\d+) *(milliseconds?|msecs?|ms|seconds?|secs?|s|minutes?|mins?|m|hours?|hrs?|h|days?|d|years?|yrs?|y)?$/i.exec(str)\n if (!match) {\n return\n }\n var n = parseFloat(match[1])\n var type = (match[2] || 'ms').toLowerCase()\n switch (type) {\n case 'years':\n case 'year':\n case 'yrs':\n case 'yr':\n case 'y':\n return n * y\n case 'days':\n case 'day':\n case 'd':\n return n * d\n case 'hours':\n case 'hour':\n case 'hrs':\n case 'hr':\n case 'h':\n return n * h\n case 'minutes':\n case 'minute':\n case 'mins':\n case 'min':\n case 'm':\n return n * m\n case 'seconds':\n case 'second':\n case 'secs':\n case 'sec':\n case 's':\n return n * s\n case 'milliseconds':\n case 'millisecond':\n case 'msecs':\n case 'msec':\n case 'ms':\n return n\n default:\n return undefined\n }\n}\n\n/**\n * Short format for `ms`.\n *\n * @param {Number} ms\n * @return {String}\n * @api private\n */\n\nfunction fmtShort(ms) {\n if (ms >= d) {\n return Math.round(ms / d) + 'd'\n }\n if (ms >= h) {\n return Math.round(ms / h) + 'h'\n }\n if (ms >= m) {\n return Math.round(ms / m) + 'm'\n }\n if (ms >= s) {\n return Math.round(ms / s) + 's'\n }\n return ms + 'ms'\n}\n\n/**\n * Long format for `ms`.\n *\n * @param {Number} ms\n * @return {String}\n * @api private\n */\n\nfunction fmtLong(ms) {\n return plural(ms, d, 'day') ||\n plural(ms, h, 'hour') ||\n plural(ms, m, 'minute') ||\n plural(ms, s, 'second') ||\n ms + ' ms'\n}\n\n/**\n * Pluralization helper.\n */\n\nfunction plural(ms, n, name) {\n if (ms < n) {\n return\n }\n if (ms < n * 1.5) {\n return Math.floor(ms / n) + ' ' + name\n }\n return Math.ceil(ms / n) + ' ' + name + 's'\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/ms/index.js\n// module id = 6\n// module chunks = 0","\n/**\n * Module dependencies.\n */\n\nvar debug = require('debug')('socket.io-parser');\nvar json = require('json3');\nvar Emitter = require('component-emitter');\nvar binary = require('./binary');\nvar isBuf = require('./is-buffer');\n\n/**\n * Protocol version.\n *\n * @api public\n */\n\nexports.protocol = 4;\n\n/**\n * Packet types.\n *\n * @api public\n */\n\nexports.types = [\n 'CONNECT',\n 'DISCONNECT',\n 'EVENT',\n 'ACK',\n 'ERROR',\n 'BINARY_EVENT',\n 'BINARY_ACK'\n];\n\n/**\n * Packet type `connect`.\n *\n * @api public\n */\n\nexports.CONNECT = 0;\n\n/**\n * Packet type `disconnect`.\n *\n * @api public\n */\n\nexports.DISCONNECT = 1;\n\n/**\n * Packet type `event`.\n *\n * @api public\n */\n\nexports.EVENT = 2;\n\n/**\n * Packet type `ack`.\n *\n * @api public\n */\n\nexports.ACK = 3;\n\n/**\n * Packet type `error`.\n *\n * @api public\n */\n\nexports.ERROR = 4;\n\n/**\n * Packet type 'binary event'\n *\n * @api public\n */\n\nexports.BINARY_EVENT = 5;\n\n/**\n * Packet type `binary ack`. For acks with binary arguments.\n *\n * @api public\n */\n\nexports.BINARY_ACK = 6;\n\n/**\n * Encoder constructor.\n *\n * @api public\n */\n\nexports.Encoder = Encoder;\n\n/**\n * Decoder constructor.\n *\n * @api public\n */\n\nexports.Decoder = Decoder;\n\n/**\n * A socket.io Encoder instance\n *\n * @api public\n */\n\nfunction Encoder() {}\n\n/**\n * Encode a packet as a single string if non-binary, or as a\n * buffer sequence, depending on packet type.\n *\n * @param {Object} obj - packet object\n * @param {Function} callback - function to handle encodings (likely engine.write)\n * @return Calls callback with Array of encodings\n * @api public\n */\n\nEncoder.prototype.encode = function(obj, callback){\n debug('encoding packet %j', obj);\n\n if (exports.BINARY_EVENT == obj.type || exports.BINARY_ACK == obj.type) {\n encodeAsBinary(obj, callback);\n }\n else {\n var encoding = encodeAsString(obj);\n callback([encoding]);\n }\n};\n\n/**\n * Encode packet as string.\n *\n * @param {Object} packet\n * @return {String} encoded\n * @api private\n */\n\nfunction encodeAsString(obj) {\n var str = '';\n var nsp = false;\n\n // first is type\n str += obj.type;\n\n // attachments if we have them\n if (exports.BINARY_EVENT == obj.type || exports.BINARY_ACK == obj.type) {\n str += obj.attachments;\n str += '-';\n }\n\n // if we have a namespace other than `/`\n // we append it followed by a comma `,`\n if (obj.nsp && '/' != obj.nsp) {\n nsp = true;\n str += obj.nsp;\n }\n\n // immediately followed by the id\n if (null != obj.id) {\n if (nsp) {\n str += ',';\n nsp = false;\n }\n str += obj.id;\n }\n\n // json data\n if (null != obj.data) {\n if (nsp) str += ',';\n str += json.stringify(obj.data);\n }\n\n debug('encoded %j as %s', obj, str);\n return str;\n}\n\n/**\n * Encode packet as 'buffer sequence' by removing blobs, and\n * deconstructing packet into object with placeholders and\n * a list of buffers.\n *\n * @param {Object} packet\n * @return {Buffer} encoded\n * @api private\n */\n\nfunction encodeAsBinary(obj, callback) {\n\n function writeEncoding(bloblessData) {\n var deconstruction = binary.deconstructPacket(bloblessData);\n var pack = encodeAsString(deconstruction.packet);\n var buffers = deconstruction.buffers;\n\n buffers.unshift(pack); // add packet info to beginning of data list\n callback(buffers); // write all the buffers\n }\n\n binary.removeBlobs(obj, writeEncoding);\n}\n\n/**\n * A socket.io Decoder instance\n *\n * @return {Object} decoder\n * @api public\n */\n\nfunction Decoder() {\n this.reconstructor = null;\n}\n\n/**\n * Mix in `Emitter` with Decoder.\n */\n\nEmitter(Decoder.prototype);\n\n/**\n * Decodes an ecoded packet string into packet JSON.\n *\n * @param {String} obj - encoded packet\n * @return {Object} packet\n * @api public\n */\n\nDecoder.prototype.add = function(obj) {\n var packet;\n if ('string' == typeof obj) {\n packet = decodeString(obj);\n if (exports.BINARY_EVENT == packet.type || exports.BINARY_ACK == packet.type) { // binary packet's json\n this.reconstructor = new BinaryReconstructor(packet);\n\n // no attachments, labeled binary but no binary data to follow\n if (this.reconstructor.reconPack.attachments === 0) {\n this.emit('decoded', packet);\n }\n } else { // non-binary full packet\n this.emit('decoded', packet);\n }\n }\n else if (isBuf(obj) || obj.base64) { // raw binary data\n if (!this.reconstructor) {\n throw new Error('got binary data when not reconstructing a packet');\n } else {\n packet = this.reconstructor.takeBinaryData(obj);\n if (packet) { // received final buffer\n this.reconstructor = null;\n this.emit('decoded', packet);\n }\n }\n }\n else {\n throw new Error('Unknown type: ' + obj);\n }\n};\n\n/**\n * Decode a packet String (JSON data)\n *\n * @param {String} str\n * @return {Object} packet\n * @api private\n */\n\nfunction decodeString(str) {\n var p = {};\n var i = 0;\n\n // look up type\n p.type = Number(str.charAt(0));\n if (null == exports.types[p.type]) return error();\n\n // look up attachments if type binary\n if (exports.BINARY_EVENT == p.type || exports.BINARY_ACK == p.type) {\n var buf = '';\n while (str.charAt(++i) != '-') {\n buf += str.charAt(i);\n if (i == str.length) break;\n }\n if (buf != Number(buf) || str.charAt(i) != '-') {\n throw new Error('Illegal attachments');\n }\n p.attachments = Number(buf);\n }\n\n // look up namespace (if any)\n if ('/' == str.charAt(i + 1)) {\n p.nsp = '';\n while (++i) {\n var c = str.charAt(i);\n if (',' == c) break;\n p.nsp += c;\n if (i == str.length) break;\n }\n } else {\n p.nsp = '/';\n }\n\n // look up id\n var next = str.charAt(i + 1);\n if ('' !== next && Number(next) == next) {\n p.id = '';\n while (++i) {\n var c = str.charAt(i);\n if (null == c || Number(c) != c) {\n --i;\n break;\n }\n p.id += str.charAt(i);\n if (i == str.length) break;\n }\n p.id = Number(p.id);\n }\n\n // look up json data\n if (str.charAt(++i)) {\n p = tryParse(p, str.substr(i));\n }\n\n debug('decoded %s as %j', str, p);\n return p;\n}\n\nfunction tryParse(p, str) {\n try {\n p.data = json.parse(str);\n } catch(e){\n return error();\n }\n return p; \n};\n\n/**\n * Deallocates a parser's resources\n *\n * @api public\n */\n\nDecoder.prototype.destroy = function() {\n if (this.reconstructor) {\n this.reconstructor.finishedReconstruction();\n }\n};\n\n/**\n * A manager of a binary event's 'buffer sequence'. Should\n * be constructed whenever a packet of type BINARY_EVENT is\n * decoded.\n *\n * @param {Object} packet\n * @return {BinaryReconstructor} initialized reconstructor\n * @api private\n */\n\nfunction BinaryReconstructor(packet) {\n this.reconPack = packet;\n this.buffers = [];\n}\n\n/**\n * Method to be called when binary data received from connection\n * after a BINARY_EVENT packet.\n *\n * @param {Buffer | ArrayBuffer} binData - the raw binary data received\n * @return {null | Object} returns null if more binary data is expected or\n * a reconstructed packet object if all buffers have been received.\n * @api private\n */\n\nBinaryReconstructor.prototype.takeBinaryData = function(binData) {\n this.buffers.push(binData);\n if (this.buffers.length == this.reconPack.attachments) { // done with buffer list\n var packet = binary.reconstructPacket(this.reconPack, this.buffers);\n this.finishedReconstruction();\n return packet;\n }\n return null;\n};\n\n/**\n * Cleans up binary packet reconstruction variables.\n *\n * @api private\n */\n\nBinaryReconstructor.prototype.finishedReconstruction = function() {\n this.reconPack = null;\n this.buffers = [];\n};\n\nfunction error(data){\n return {\n type: exports.ERROR,\n data: 'parser error'\n };\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/socket.io-parser/index.js\n// module id = 7\n// module chunks = 0","\n/**\n * This is the web browser implementation of `debug()`.\n *\n * Expose `debug()` as the module.\n */\n\nexports = module.exports = require('./debug');\nexports.log = log;\nexports.formatArgs = formatArgs;\nexports.save = save;\nexports.load = load;\nexports.useColors = useColors;\nexports.storage = 'undefined' != typeof chrome\n && 'undefined' != typeof chrome.storage\n ? chrome.storage.local\n : localstorage();\n\n/**\n * Colors.\n */\n\nexports.colors = [\n 'lightseagreen',\n 'forestgreen',\n 'goldenrod',\n 'dodgerblue',\n 'darkorchid',\n 'crimson'\n];\n\n/**\n * Currently only WebKit-based Web Inspectors, Firefox >= v31,\n * and the Firebug extension (any Firefox version) are known\n * to support \"%c\" CSS customizations.\n *\n * TODO: add a `localStorage` variable to explicitly enable/disable colors\n */\n\nfunction useColors() {\n // is webkit? http://stackoverflow.com/a/16459606/376773\n return ('WebkitAppearance' in document.documentElement.style) ||\n // is firebug? http://stackoverflow.com/a/398120/376773\n (window.console && (console.firebug || (console.exception && console.table))) ||\n // is firefox >= v31?\n // https://developer.mozilla.org/en-US/docs/Tools/Web_Console#Styling_messages\n (navigator.userAgent.toLowerCase().match(/firefox\\/(\\d+)/) && parseInt(RegExp.$1, 10) >= 31);\n}\n\n/**\n * Map %j to `JSON.stringify()`, since no Web Inspectors do that by default.\n */\n\nexports.formatters.j = function(v) {\n return JSON.stringify(v);\n};\n\n\n/**\n * Colorize log arguments if enabled.\n *\n * @api public\n */\n\nfunction formatArgs() {\n var args = arguments;\n var useColors = this.useColors;\n\n args[0] = (useColors ? '%c' : '')\n + this.namespace\n + (useColors ? ' %c' : ' ')\n + args[0]\n + (useColors ? '%c ' : ' ')\n + '+' + exports.humanize(this.diff);\n\n if (!useColors) return args;\n\n var c = 'color: ' + this.color;\n args = [args[0], c, 'color: inherit'].concat(Array.prototype.slice.call(args, 1));\n\n // the final \"%c\" is somewhat tricky, because there could be other\n // arguments passed either before or after the %c, so we need to\n // figure out the correct index to insert the CSS into\n var index = 0;\n var lastC = 0;\n args[0].replace(/%[a-z%]/g, function(match) {\n if ('%%' === match) return;\n index++;\n if ('%c' === match) {\n // we only are interested in the *last* %c\n // (the user may have provided their own)\n lastC = index;\n }\n });\n\n args.splice(lastC, 0, c);\n return args;\n}\n\n/**\n * Invokes `console.log()` when available.\n * No-op when `console.log` is not a \"function\".\n *\n * @api public\n */\n\nfunction log() {\n // this hackery is required for IE8/9, where\n // the `console.log` function doesn't have 'apply'\n return 'object' === typeof console\n && console.log\n && Function.prototype.apply.call(console.log, console, arguments);\n}\n\n/**\n * Save `namespaces`.\n *\n * @param {String} namespaces\n * @api private\n */\n\nfunction save(namespaces) {\n try {\n if (null == namespaces) {\n exports.storage.removeItem('debug');\n } else {\n exports.storage.debug = namespaces;\n }\n } catch(e) {}\n}\n\n/**\n * Load `namespaces`.\n *\n * @return {String} returns the previously persisted debug modes\n * @api private\n */\n\nfunction load() {\n var r;\n try {\n r = exports.storage.debug;\n } catch(e) {}\n return r;\n}\n\n/**\n * Enable namespaces listed in `localStorage.debug` initially.\n */\n\nexports.enable(load());\n\n/**\n * Localstorage attempts to return the localstorage.\n *\n * This is necessary because safari throws\n * when a user disables cookies/localstorage\n * and you attempt to access it.\n *\n * @return {LocalStorage}\n * @api private\n */\n\nfunction localstorage(){\n try {\n return window.localStorage;\n } catch (e) {}\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/socket.io-parser/~/debug/browser.js\n// module id = 8\n// module chunks = 0","\n/**\n * This is the common logic for both the Node.js and web browser\n * implementations of `debug()`.\n *\n * Expose `debug()` as the module.\n */\n\nexports = module.exports = debug;\nexports.coerce = coerce;\nexports.disable = disable;\nexports.enable = enable;\nexports.enabled = enabled;\nexports.humanize = require('ms');\n\n/**\n * The currently active debug mode names, and names to skip.\n */\n\nexports.names = [];\nexports.skips = [];\n\n/**\n * Map of special \"%n\" handling functions, for the debug \"format\" argument.\n *\n * Valid key names are a single, lowercased letter, i.e. \"n\".\n */\n\nexports.formatters = {};\n\n/**\n * Previously assigned color.\n */\n\nvar prevColor = 0;\n\n/**\n * Previous log timestamp.\n */\n\nvar prevTime;\n\n/**\n * Select a color.\n *\n * @return {Number}\n * @api private\n */\n\nfunction selectColor() {\n return exports.colors[prevColor++ % exports.colors.length];\n}\n\n/**\n * Create a debugger with the given `namespace`.\n *\n * @param {String} namespace\n * @return {Function}\n * @api public\n */\n\nfunction debug(namespace) {\n\n // define the `disabled` version\n function disabled() {\n }\n disabled.enabled = false;\n\n // define the `enabled` version\n function enabled() {\n\n var self = enabled;\n\n // set `diff` timestamp\n var curr = +new Date();\n var ms = curr - (prevTime || curr);\n self.diff = ms;\n self.prev = prevTime;\n self.curr = curr;\n prevTime = curr;\n\n // add the `color` if not set\n if (null == self.useColors) self.useColors = exports.useColors();\n if (null == self.color && self.useColors) self.color = selectColor();\n\n var args = Array.prototype.slice.call(arguments);\n\n args[0] = exports.coerce(args[0]);\n\n if ('string' !== typeof args[0]) {\n // anything else let's inspect with %o\n args = ['%o'].concat(args);\n }\n\n // apply any `formatters` transformations\n var index = 0;\n args[0] = args[0].replace(/%([a-z%])/g, function(match, format) {\n // if we encounter an escaped % then don't increase the array index\n if (match === '%%') return match;\n index++;\n var formatter = exports.formatters[format];\n if ('function' === typeof formatter) {\n var val = args[index];\n match = formatter.call(self, val);\n\n // now we need to remove `args[index]` since it's inlined in the `format`\n args.splice(index, 1);\n index--;\n }\n return match;\n });\n\n if ('function' === typeof exports.formatArgs) {\n args = exports.formatArgs.apply(self, args);\n }\n var logFn = enabled.log || exports.log || console.log.bind(console);\n logFn.apply(self, args);\n }\n enabled.enabled = true;\n\n var fn = exports.enabled(namespace) ? enabled : disabled;\n\n fn.namespace = namespace;\n\n return fn;\n}\n\n/**\n * Enables a debug mode by namespaces. This can include modes\n * separated by a colon and wildcards.\n *\n * @param {String} namespaces\n * @api public\n */\n\nfunction enable(namespaces) {\n exports.save(namespaces);\n\n var split = (namespaces || '').split(/[\\s,]+/);\n var len = split.length;\n\n for (var i = 0; i < len; i++) {\n if (!split[i]) continue; // ignore empty strings\n namespaces = split[i].replace(/\\*/g, '.*?');\n if (namespaces[0] === '-') {\n exports.skips.push(new RegExp('^' + namespaces.substr(1) + '$'));\n } else {\n exports.names.push(new RegExp('^' + namespaces + '$'));\n }\n }\n}\n\n/**\n * Disable debug output.\n *\n * @api public\n */\n\nfunction disable() {\n exports.enable('');\n}\n\n/**\n * Returns true if the given mode name is enabled, false otherwise.\n *\n * @param {String} name\n * @return {Boolean}\n * @api public\n */\n\nfunction enabled(name) {\n var i, len;\n for (i = 0, len = exports.skips.length; i < len; i++) {\n if (exports.skips[i].test(name)) {\n return false;\n }\n }\n for (i = 0, len = exports.names.length; i < len; i++) {\n if (exports.names[i].test(name)) {\n return true;\n }\n }\n return false;\n}\n\n/**\n * Coerce `val`.\n *\n * @param {Mixed} val\n * @return {Mixed}\n * @api private\n */\n\nfunction coerce(val) {\n if (val instanceof Error) return val.stack || val.message;\n return val;\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/socket.io-parser/~/debug/debug.js\n// module id = 9\n// module chunks = 0","/**\n * Helpers.\n */\n\nvar s = 1000;\nvar m = s * 60;\nvar h = m * 60;\nvar d = h * 24;\nvar y = d * 365.25;\n\n/**\n * Parse or format the given `val`.\n *\n * Options:\n *\n * - `long` verbose formatting [false]\n *\n * @param {String|Number} val\n * @param {Object} options\n * @return {String|Number}\n * @api public\n */\n\nmodule.exports = function(val, options){\n options = options || {};\n if ('string' == typeof val) return parse(val);\n return options.long\n ? long(val)\n : short(val);\n};\n\n/**\n * Parse the given `str` and return milliseconds.\n *\n * @param {String} str\n * @return {Number}\n * @api private\n */\n\nfunction parse(str) {\n str = '' + str;\n if (str.length > 10000) return;\n var match = /^((?:\\d+)?\\.?\\d+) *(milliseconds?|msecs?|ms|seconds?|secs?|s|minutes?|mins?|m|hours?|hrs?|h|days?|d|years?|yrs?|y)?$/i.exec(str);\n if (!match) return;\n var n = parseFloat(match[1]);\n var type = (match[2] || 'ms').toLowerCase();\n switch (type) {\n case 'years':\n case 'year':\n case 'yrs':\n case 'yr':\n case 'y':\n return n * y;\n case 'days':\n case 'day':\n case 'd':\n return n * d;\n case 'hours':\n case 'hour':\n case 'hrs':\n case 'hr':\n case 'h':\n return n * h;\n case 'minutes':\n case 'minute':\n case 'mins':\n case 'min':\n case 'm':\n return n * m;\n case 'seconds':\n case 'second':\n case 'secs':\n case 'sec':\n case 's':\n return n * s;\n case 'milliseconds':\n case 'millisecond':\n case 'msecs':\n case 'msec':\n case 'ms':\n return n;\n }\n}\n\n/**\n * Short format for `ms`.\n *\n * @param {Number} ms\n * @return {String}\n * @api private\n */\n\nfunction short(ms) {\n if (ms >= d) return Math.round(ms / d) + 'd';\n if (ms >= h) return Math.round(ms / h) + 'h';\n if (ms >= m) return Math.round(ms / m) + 'm';\n if (ms >= s) return Math.round(ms / s) + 's';\n return ms + 'ms';\n}\n\n/**\n * Long format for `ms`.\n *\n * @param {Number} ms\n * @return {String}\n * @api private\n */\n\nfunction long(ms) {\n return plural(ms, d, 'day')\n || plural(ms, h, 'hour')\n || plural(ms, m, 'minute')\n || plural(ms, s, 'second')\n || ms + ' ms';\n}\n\n/**\n * Pluralization helper.\n */\n\nfunction plural(ms, n, name) {\n if (ms < n) return;\n if (ms < n * 1.5) return Math.floor(ms / n) + ' ' + name;\n return Math.ceil(ms / n) + ' ' + name + 's';\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/socket.io-parser/~/ms/index.js\n// module id = 10\n// module chunks = 0","/*** IMPORTS FROM imports-loader ***/\nvar define = false;\n\n/*! JSON v3.3.2 | http://bestiejs.github.io/json3 | Copyright 2012-2014, Kit Cambridge | http://kit.mit-license.org */\n;(function () {\n // Detect the `define` function exposed by asynchronous module loaders. The\n // strict `define` check is necessary for compatibility with `r.js`.\n var isLoader = typeof define === \"function\" && define.amd;\n\n // A set of types used to distinguish objects from primitives.\n var objectTypes = {\n \"function\": true,\n \"object\": true\n };\n\n // Detect the `exports` object exposed by CommonJS implementations.\n var freeExports = objectTypes[typeof exports] && exports && !exports.nodeType && exports;\n\n // Use the `global` object exposed by Node (including Browserify via\n // `insert-module-globals`), Narwhal, and Ringo as the default context,\n // and the `window` object in browsers. Rhino exports a `global` function\n // instead.\n var root = objectTypes[typeof window] && window || this,\n freeGlobal = freeExports && objectTypes[typeof module] && module && !module.nodeType && typeof global == \"object\" && global;\n\n if (freeGlobal && (freeGlobal[\"global\"] === freeGlobal || freeGlobal[\"window\"] === freeGlobal || freeGlobal[\"self\"] === freeGlobal)) {\n root = freeGlobal;\n }\n\n // Public: Initializes JSON 3 using the given `context` object, attaching the\n // `stringify` and `parse` functions to the specified `exports` object.\n function runInContext(context, exports) {\n context || (context = root[\"Object\"]());\n exports || (exports = root[\"Object\"]());\n\n // Native constructor aliases.\n var Number = context[\"Number\"] || root[\"Number\"],\n String = context[\"String\"] || root[\"String\"],\n Object = context[\"Object\"] || root[\"Object\"],\n Date = context[\"Date\"] || root[\"Date\"],\n SyntaxError = context[\"SyntaxError\"] || root[\"SyntaxError\"],\n TypeError = context[\"TypeError\"] || root[\"TypeError\"],\n Math = context[\"Math\"] || root[\"Math\"],\n nativeJSON = context[\"JSON\"] || root[\"JSON\"];\n\n // Delegate to the native `stringify` and `parse` implementations.\n if (typeof nativeJSON == \"object\" && nativeJSON) {\n exports.stringify = nativeJSON.stringify;\n exports.parse = nativeJSON.parse;\n }\n\n // Convenience aliases.\n var objectProto = Object.prototype,\n getClass = objectProto.toString,\n isProperty, forEach, undef;\n\n // Test the `Date#getUTC*` methods. Based on work by @Yaffle.\n var isExtended = new Date(-3509827334573292);\n try {\n // The `getUTCFullYear`, `Month`, and `Date` methods return nonsensical\n // results for certain dates in Opera >= 10.53.\n isExtended = isExtended.getUTCFullYear() == -109252 && isExtended.getUTCMonth() === 0 && isExtended.getUTCDate() === 1 &&\n // Safari < 2.0.2 stores the internal millisecond time value correctly,\n // but clips the values returned by the date methods to the range of\n // signed 32-bit integers ([-2 ** 31, 2 ** 31 - 1]).\n isExtended.getUTCHours() == 10 && isExtended.getUTCMinutes() == 37 && isExtended.getUTCSeconds() == 6 && isExtended.getUTCMilliseconds() == 708;\n } catch (exception) {}\n\n // Internal: Determines whether the native `JSON.stringify` and `parse`\n // implementations are spec-compliant. Based on work by Ken Snyder.\n function has(name) {\n if (has[name] !== undef) {\n // Return cached feature test result.\n return has[name];\n }\n var isSupported;\n if (name == \"bug-string-char-index\") {\n // IE <= 7 doesn't support accessing string characters using square\n // bracket notation. IE 8 only supports this for primitives.\n isSupported = \"a\"[0] != \"a\";\n } else if (name == \"json\") {\n // Indicates whether both `JSON.stringify` and `JSON.parse` are\n // supported.\n isSupported = has(\"json-stringify\") && has(\"json-parse\");\n } else {\n var value, serialized = '{\"a\":[1,true,false,null,\"\\\\u0000\\\\b\\\\n\\\\f\\\\r\\\\t\"]}';\n // Test `JSON.stringify`.\n if (name == \"json-stringify\") {\n var stringify = exports.stringify, stringifySupported = typeof stringify == \"function\" && isExtended;\n if (stringifySupported) {\n // A test function object with a custom `toJSON` method.\n (value = function () {\n return 1;\n }).toJSON = value;\n try {\n stringifySupported =\n // Firefox 3.1b1 and b2 serialize string, number, and boolean\n // primitives as object literals.\n stringify(0) === \"0\" &&\n // FF 3.1b1, b2, and JSON 2 serialize wrapped primitives as object\n // literals.\n stringify(new Number()) === \"0\" &&\n stringify(new String()) == '\"\"' &&\n // FF 3.1b1, 2 throw an error if the value is `null`, `undefined`, or\n // does not define a canonical JSON representation (this applies to\n // objects with `toJSON` properties as well, *unless* they are nested\n // within an object or array).\n stringify(getClass) === undef &&\n // IE 8 serializes `undefined` as `\"undefined\"`. Safari <= 5.1.7 and\n // FF 3.1b3 pass this test.\n stringify(undef) === undef &&\n // Safari <= 5.1.7 and FF 3.1b3 throw `Error`s and `TypeError`s,\n // respectively, if the value is omitted entirely.\n stringify() === undef &&\n // FF 3.1b1, 2 throw an error if the given value is not a number,\n // string, array, object, Boolean, or `null` literal. This applies to\n // objects with custom `toJSON` methods as well, unless they are nested\n // inside object or array literals. YUI 3.0.0b1 ignores custom `toJSON`\n // methods entirely.\n stringify(value) === \"1\" &&\n stringify([value]) == \"[1]\" &&\n // Prototype <= 1.6.1 serializes `[undefined]` as `\"[]\"` instead of\n // `\"[null]\"`.\n stringify([undef]) == \"[null]\" &&\n // YUI 3.0.0b1 fails to serialize `null` literals.\n stringify(null) == \"null\" &&\n // FF 3.1b1, 2 halts serialization if an array contains a function:\n // `[1, true, getClass, 1]` serializes as \"[1,true,],\". FF 3.1b3\n // elides non-JSON values from objects and arrays, unless they\n // define custom `toJSON` methods.\n stringify([undef, getClass, null]) == \"[null,null,null]\" &&\n // Simple serialization test. FF 3.1b1 uses Unicode escape sequences\n // where character escape codes are expected (e.g., `\\b` => `\\u0008`).\n stringify({ \"a\": [value, true, false, null, \"\\x00\\b\\n\\f\\r\\t\"] }) == serialized &&\n // FF 3.1b1 and b2 ignore the `filter` and `width` arguments.\n stringify(null, value) === \"1\" &&\n stringify([1, 2], null, 1) == \"[\\n 1,\\n 2\\n]\" &&\n // JSON 2, Prototype <= 1.7, and older WebKit builds incorrectly\n // serialize extended years.\n stringify(new Date(-8.64e15)) == '\"-271821-04-20T00:00:00.000Z\"' &&\n // The milliseconds are optional in ES 5, but required in 5.1.\n stringify(new Date(8.64e15)) == '\"+275760-09-13T00:00:00.000Z\"' &&\n // Firefox <= 11.0 incorrectly serializes years prior to 0 as negative\n // four-digit years instead of six-digit years. Credits: @Yaffle.\n stringify(new Date(-621987552e5)) == '\"-000001-01-01T00:00:00.000Z\"' &&\n // Safari <= 5.1.5 and Opera >= 10.53 incorrectly serialize millisecond\n // values less than 1000. Credits: @Yaffle.\n stringify(new Date(-1)) == '\"1969-12-31T23:59:59.999Z\"';\n } catch (exception) {\n stringifySupported = false;\n }\n }\n isSupported = stringifySupported;\n }\n // Test `JSON.parse`.\n if (name == \"json-parse\") {\n var parse = exports.parse;\n if (typeof parse == \"function\") {\n try {\n // FF 3.1b1, b2 will throw an exception if a bare literal is provided.\n // Conforming implementations should also coerce the initial argument to\n // a string prior to parsing.\n if (parse(\"0\") === 0 && !parse(false)) {\n // Simple parsing test.\n value = parse(serialized);\n var parseSupported = value[\"a\"].length == 5 && value[\"a\"][0] === 1;\n if (parseSupported) {\n try {\n // Safari <= 5.1.2 and FF 3.1b1 allow unescaped tabs in strings.\n parseSupported = !parse('\"\\t\"');\n } catch (exception) {}\n if (parseSupported) {\n try {\n // FF 4.0 and 4.0.1 allow leading `+` signs and leading\n // decimal points. FF 4.0, 4.0.1, and IE 9-10 also allow\n // certain octal literals.\n parseSupported = parse(\"01\") !== 1;\n } catch (exception) {}\n }\n if (parseSupported) {\n try {\n // FF 4.0, 4.0.1, and Rhino 1.7R3-R4 allow trailing decimal\n // points. These environments, along with FF 3.1b1 and 2,\n // also allow trailing commas in JSON objects and arrays.\n parseSupported = parse(\"1.\") !== 1;\n } catch (exception) {}\n }\n }\n }\n } catch (exception) {\n parseSupported = false;\n }\n }\n isSupported = parseSupported;\n }\n }\n return has[name] = !!isSupported;\n }\n\n if (!has(\"json\")) {\n // Common `[[Class]]` name aliases.\n var functionClass = \"[object Function]\",\n dateClass = \"[object Date]\",\n numberClass = \"[object Number]\",\n stringClass = \"[object String]\",\n arrayClass = \"[object Array]\",\n booleanClass = \"[object Boolean]\";\n\n // Detect incomplete support for accessing string characters by index.\n var charIndexBuggy = has(\"bug-string-char-index\");\n\n // Define additional utility methods if the `Date` methods are buggy.\n if (!isExtended) {\n var floor = Math.floor;\n // A mapping between the months of the year and the number of days between\n // January 1st and the first of the respective month.\n var Months = [0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334];\n // Internal: Calculates the number of days between the Unix epoch and the\n // first day of the given month.\n var getDay = function (year, month) {\n return Months[month] + 365 * (year - 1970) + floor((year - 1969 + (month = +(month > 1))) / 4) - floor((year - 1901 + month) / 100) + floor((year - 1601 + month) / 400);\n };\n }\n\n // Internal: Determines if a property is a direct property of the given\n // object. Delegates to the native `Object#hasOwnProperty` method.\n if (!(isProperty = objectProto.hasOwnProperty)) {\n isProperty = function (property) {\n var members = {}, constructor;\n if ((members.__proto__ = null, members.__proto__ = {\n // The *proto* property cannot be set multiple times in recent\n // versions of Firefox and SeaMonkey.\n \"toString\": 1\n }, members).toString != getClass) {\n // Safari <= 2.0.3 doesn't implement `Object#hasOwnProperty`, but\n // supports the mutable *proto* property.\n isProperty = function (property) {\n // Capture and break the object's prototype chain (see section 8.6.2\n // of the ES 5.1 spec). The parenthesized expression prevents an\n // unsafe transformation by the Closure Compiler.\n var original = this.__proto__, result = property in (this.__proto__ = null, this);\n // Restore the original prototype chain.\n this.__proto__ = original;\n return result;\n };\n } else {\n // Capture a reference to the top-level `Object` constructor.\n constructor = members.constructor;\n // Use the `constructor` property to simulate `Object#hasOwnProperty` in\n // other environments.\n isProperty = function (property) {\n var parent = (this.constructor || constructor).prototype;\n return property in this && !(property in parent && this[property] === parent[property]);\n };\n }\n members = null;\n return isProperty.call(this, property);\n };\n }\n\n // Internal: Normalizes the `for...in` iteration algorithm across\n // environments. Each enumerated key is yielded to a `callback` function.\n forEach = function (object, callback) {\n var size = 0, Properties, members, property;\n\n // Tests for bugs in the current environment's `for...in` algorithm. The\n // `valueOf` property inherits the non-enumerable flag from\n // `Object.prototype` in older versions of IE, Netscape, and Mozilla.\n (Properties = function () {\n this.valueOf = 0;\n }).prototype.valueOf = 0;\n\n // Iterate over a new instance of the `Properties` class.\n members = new Properties();\n for (property in members) {\n // Ignore all properties inherited from `Object.prototype`.\n if (isProperty.call(members, property)) {\n size++;\n }\n }\n Properties = members = null;\n\n // Normalize the iteration algorithm.\n if (!size) {\n // A list of non-enumerable properties inherited from `Object.prototype`.\n members = [\"valueOf\", \"toString\", \"toLocaleString\", \"propertyIsEnumerable\", \"isPrototypeOf\", \"hasOwnProperty\", \"constructor\"];\n // IE <= 8, Mozilla 1.0, and Netscape 6.2 ignore shadowed non-enumerable\n // properties.\n forEach = function (object, callback) {\n var isFunction = getClass.call(object) == functionClass, property, length;\n var hasProperty = !isFunction && typeof object.constructor != \"function\" && objectTypes[typeof object.hasOwnProperty] && object.hasOwnProperty || isProperty;\n for (property in object) {\n // Gecko <= 1.0 enumerates the `prototype` property of functions under\n // certain conditions; IE does not.\n if (!(isFunction && property == \"prototype\") && hasProperty.call(object, property)) {\n callback(property);\n }\n }\n // Manually invoke the callback for each non-enumerable property.\n for (length = members.length; property = members[--length]; hasProperty.call(object, property) && callback(property));\n };\n } else if (size == 2) {\n // Safari <= 2.0.4 enumerates shadowed properties twice.\n forEach = function (object, callback) {\n // Create a set of iterated properties.\n var members = {}, isFunction = getClass.call(object) == functionClass, property;\n for (property in object) {\n // Store each property name to prevent double enumeration. The\n // `prototype` property of functions is not enumerated due to cross-\n // environment inconsistencies.\n if (!(isFunction && property == \"prototype\") && !isProperty.call(members, property) && (members[property] = 1) && isProperty.call(object, property)) {\n callback(property);\n }\n }\n };\n } else {\n // No bugs detected; use the standard `for...in` algorithm.\n forEach = function (object, callback) {\n var isFunction = getClass.call(object) == functionClass, property, isConstructor;\n for (property in object) {\n if (!(isFunction && property == \"prototype\") && isProperty.call(object, property) && !(isConstructor = property === \"constructor\")) {\n callback(property);\n }\n }\n // Manually invoke the callback for the `constructor` property due to\n // cross-environment inconsistencies.\n if (isConstructor || isProperty.call(object, (property = \"constructor\"))) {\n callback(property);\n }\n };\n }\n return forEach(object, callback);\n };\n\n // Public: Serializes a JavaScript `value` as a JSON string. The optional\n // `filter` argument may specify either a function that alters how object and\n // array members are serialized, or an array of strings and numbers that\n // indicates which properties should be serialized. The optional `width`\n // argument may be either a string or number that specifies the indentation\n // level of the output.\n if (!has(\"json-stringify\")) {\n // Internal: A map of control characters and their escaped equivalents.\n var Escapes = {\n 92: \"\\\\\\\\\",\n 34: '\\\\\"',\n 8: \"\\\\b\",\n 12: \"\\\\f\",\n 10: \"\\\\n\",\n 13: \"\\\\r\",\n 9: \"\\\\t\"\n };\n\n // Internal: Converts `value` into a zero-padded string such that its\n // length is at least equal to `width`. The `width` must be <= 6.\n var leadingZeroes = \"000000\";\n var toPaddedString = function (width, value) {\n // The `|| 0` expression is necessary to work around a bug in\n // Opera <= 7.54u2 where `0 == -0`, but `String(-0) !== \"0\"`.\n return (leadingZeroes + (value || 0)).slice(-width);\n };\n\n // Internal: Double-quotes a string `value`, replacing all ASCII control\n // characters (characters with code unit values between 0 and 31) with\n // their escaped equivalents. This is an implementation of the\n // `Quote(value)` operation defined in ES 5.1 section 15.12.3.\n var unicodePrefix = \"\\\\u00\";\n var quote = function (value) {\n var result = '\"', index = 0, length = value.length, useCharIndex = !charIndexBuggy || length > 10;\n var symbols = useCharIndex && (charIndexBuggy ? value.split(\"\") : value);\n for (; index < length; index++) {\n var charCode = value.charCodeAt(index);\n // If the character is a control character, append its Unicode or\n // shorthand escape sequence; otherwise, append the character as-is.\n switch (charCode) {\n case 8: case 9: case 10: case 12: case 13: case 34: case 92:\n result += Escapes[charCode];\n break;\n default:\n if (charCode < 32) {\n result += unicodePrefix + toPaddedString(2, charCode.toString(16));\n break;\n }\n result += useCharIndex ? symbols[index] : value.charAt(index);\n }\n }\n return result + '\"';\n };\n\n // Internal: Recursively serializes an object. Implements the\n // `Str(key, holder)`, `JO(value)`, and `JA(value)` operations.\n var serialize = function (property, object, callback, properties, whitespace, indentation, stack) {\n var value, className, year, month, date, time, hours, minutes, seconds, milliseconds, results, element, index, length, prefix, result;\n try {\n // Necessary for host object support.\n value = object[property];\n } catch (exception) {}\n if (typeof value == \"object\" && value) {\n className = getClass.call(value);\n if (className == dateClass && !isProperty.call(value, \"toJSON\")) {\n if (value > -1 / 0 && value < 1 / 0) {\n // Dates are serialized according to the `Date#toJSON` method\n // specified in ES 5.1 section 15.9.5.44. See section 15.9.1.15\n // for the ISO 8601 date time string format.\n if (getDay) {\n // Manually compute the year, month, date, hours, minutes,\n // seconds, and milliseconds if the `getUTC*` methods are\n // buggy. Adapted from @Yaffle's `date-shim` project.\n date = floor(value / 864e5);\n for (year = floor(date / 365.2425) + 1970 - 1; getDay(year + 1, 0) <= date; year++);\n for (month = floor((date - getDay(year, 0)) / 30.42); getDay(year, month + 1) <= date; month++);\n date = 1 + date - getDay(year, month);\n // The `time` value specifies the time within the day (see ES\n // 5.1 section 15.9.1.2). The formula `(A % B + B) % B` is used\n // to compute `A modulo B`, as the `%` operator does not\n // correspond to the `modulo` operation for negative numbers.\n time = (value % 864e5 + 864e5) % 864e5;\n // The hours, minutes, seconds, and milliseconds are obtained by\n // decomposing the time within the day. See section 15.9.1.10.\n hours = floor(time / 36e5) % 24;\n minutes = floor(time / 6e4) % 60;\n seconds = floor(time / 1e3) % 60;\n milliseconds = time % 1e3;\n } else {\n year = value.getUTCFullYear();\n month = value.getUTCMonth();\n date = value.getUTCDate();\n hours = value.getUTCHours();\n minutes = value.getUTCMinutes();\n seconds = value.getUTCSeconds();\n milliseconds = value.getUTCMilliseconds();\n }\n // Serialize extended years correctly.\n value = (year <= 0 || year >= 1e4 ? (year < 0 ? \"-\" : \"+\") + toPaddedString(6, year < 0 ? -year : year) : toPaddedString(4, year)) +\n \"-\" + toPaddedString(2, month + 1) + \"-\" + toPaddedString(2, date) +\n // Months, dates, hours, minutes, and seconds should have two\n // digits; milliseconds should have three.\n \"T\" + toPaddedString(2, hours) + \":\" + toPaddedString(2, minutes) + \":\" + toPaddedString(2, seconds) +\n // Milliseconds are optional in ES 5.0, but required in 5.1.\n \".\" + toPaddedString(3, milliseconds) + \"Z\";\n } else {\n value = null;\n }\n } else if (typeof value.toJSON == \"function\" && ((className != numberClass && className != stringClass && className != arrayClass) || isProperty.call(value, \"toJSON\"))) {\n // Prototype <= 1.6.1 adds non-standard `toJSON` methods to the\n // `Number`, `String`, `Date`, and `Array` prototypes. JSON 3\n // ignores all `toJSON` methods on these objects unless they are\n // defined directly on an instance.\n value = value.toJSON(property);\n }\n }\n if (callback) {\n // If a replacement function was provided, call it to obtain the value\n // for serialization.\n value = callback.call(object, property, value);\n }\n if (value === null) {\n return \"null\";\n }\n className = getClass.call(value);\n if (className == booleanClass) {\n // Booleans are represented literally.\n return \"\" + value;\n } else if (className == numberClass) {\n // JSON numbers must be finite. `Infinity` and `NaN` are serialized as\n // `\"null\"`.\n return value > -1 / 0 && value < 1 / 0 ? \"\" + value : \"null\";\n } else if (className == stringClass) {\n // Strings are double-quoted and escaped.\n return quote(\"\" + value);\n }\n // Recursively serialize objects and arrays.\n if (typeof value == \"object\") {\n // Check for cyclic structures. This is a linear search; performance\n // is inversely proportional to the number of unique nested objects.\n for (length = stack.length; length--;) {\n if (stack[length] === value) {\n // Cyclic structures cannot be serialized by `JSON.stringify`.\n throw TypeError();\n }\n }\n // Add the object to the stack of traversed objects.\n stack.push(value);\n results = [];\n // Save the current indentation level and indent one additional level.\n prefix = indentation;\n indentation += whitespace;\n if (className == arrayClass) {\n // Recursively serialize array elements.\n for (index = 0, length = value.length; index < length; index++) {\n element = serialize(index, value, callback, properties, whitespace, indentation, stack);\n results.push(element === undef ? \"null\" : element);\n }\n result = results.length ? (whitespace ? \"[\\n\" + indentation + results.join(\",\\n\" + indentation) + \"\\n\" + prefix + \"]\" : (\"[\" + results.join(\",\") + \"]\")) : \"[]\";\n } else {\n // Recursively serialize object members. Members are selected from\n // either a user-specified list of property names, or the object\n // itself.\n forEach(properties || value, function (property) {\n var element = serialize(property, value, callback, properties, whitespace, indentation, stack);\n if (element !== undef) {\n // According to ES 5.1 section 15.12.3: \"If `gap` {whitespace}\n // is not the empty string, let `member` {quote(property) + \":\"}\n // be the concatenation of `member` and the `space` character.\"\n // The \"`space` character\" refers to the literal space\n // character, not the `space` {width} argument provided to\n // `JSON.stringify`.\n results.push(quote(property) + \":\" + (whitespace ? \" \" : \"\") + element);\n }\n });\n result = results.length ? (whitespace ? \"{\\n\" + indentation + results.join(\",\\n\" + indentation) + \"\\n\" + prefix + \"}\" : (\"{\" + results.join(\",\") + \"}\")) : \"{}\";\n }\n // Remove the object from the traversed object stack.\n stack.pop();\n return result;\n }\n };\n\n // Public: `JSON.stringify`. See ES 5.1 section 15.12.3.\n exports.stringify = function (source, filter, width) {\n var whitespace, callback, properties, className;\n if (objectTypes[typeof filter] && filter) {\n if ((className = getClass.call(filter)) == functionClass) {\n callback = filter;\n } else if (className == arrayClass) {\n // Convert the property names array into a makeshift set.\n properties = {};\n for (var index = 0, length = filter.length, value; index < length; value = filter[index++], ((className = getClass.call(value)), className == stringClass || className == numberClass) && (properties[value] = 1));\n }\n }\n if (width) {\n if ((className = getClass.call(width)) == numberClass) {\n // Convert the `width` to an integer and create a string containing\n // `width` number of space characters.\n if ((width -= width % 1) > 0) {\n for (whitespace = \"\", width > 10 && (width = 10); whitespace.length < width; whitespace += \" \");\n }\n } else if (className == stringClass) {\n whitespace = width.length <= 10 ? width : width.slice(0, 10);\n }\n }\n // Opera <= 7.54u2 discards the values associated with empty string keys\n // (`\"\"`) only if they are used directly within an object member list\n // (e.g., `!(\"\" in { \"\": 1})`).\n return serialize(\"\", (value = {}, value[\"\"] = source, value), callback, properties, whitespace, \"\", []);\n };\n }\n\n // Public: Parses a JSON source string.\n if (!has(\"json-parse\")) {\n var fromCharCode = String.fromCharCode;\n\n // Internal: A map of escaped control characters and their unescaped\n // equivalents.\n var Unescapes = {\n 92: \"\\\\\",\n 34: '\"',\n 47: \"/\",\n 98: \"\\b\",\n 116: \"\\t\",\n 110: \"\\n\",\n 102: \"\\f\",\n 114: \"\\r\"\n };\n\n // Internal: Stores the parser state.\n var Index, Source;\n\n // Internal: Resets the parser state and throws a `SyntaxError`.\n var abort = function () {\n Index = Source = null;\n throw SyntaxError();\n };\n\n // Internal: Returns the next token, or `\"$\"` if the parser has reached\n // the end of the source string. A token may be a string, number, `null`\n // literal, or Boolean literal.\n var lex = function () {\n var source = Source, length = source.length, value, begin, position, isSigned, charCode;\n while (Index < length) {\n charCode = source.charCodeAt(Index);\n switch (charCode) {\n case 9: case 10: case 13: case 32:\n // Skip whitespace tokens, including tabs, carriage returns, line\n // feeds, and space characters.\n Index++;\n break;\n case 123: case 125: case 91: case 93: case 58: case 44:\n // Parse a punctuator token (`{`, `}`, `[`, `]`, `:`, or `,`) at\n // the current position.\n value = charIndexBuggy ? source.charAt(Index) : source[Index];\n Index++;\n return value;\n case 34:\n // `\"` delimits a JSON string; advance to the next character and\n // begin parsing the string. String tokens are prefixed with the\n // sentinel `@` character to distinguish them from punctuators and\n // end-of-string tokens.\n for (value = \"@\", Index++; Index < length;) {\n charCode = source.charCodeAt(Index);\n if (charCode < 32) {\n // Unescaped ASCII control characters (those with a code unit\n // less than the space character) are not permitted.\n abort();\n } else if (charCode == 92) {\n // A reverse solidus (`\\`) marks the beginning of an escaped\n // control character (including `\"`, `\\`, and `/`) or Unicode\n // escape sequence.\n charCode = source.charCodeAt(++Index);\n switch (charCode) {\n case 92: case 34: case 47: case 98: case 116: case 110: case 102: case 114:\n // Revive escaped control characters.\n value += Unescapes[charCode];\n Index++;\n break;\n case 117:\n // `\\u` marks the beginning of a Unicode escape sequence.\n // Advance to the first character and validate the\n // four-digit code point.\n begin = ++Index;\n for (position = Index + 4; Index < position; Index++) {\n charCode = source.charCodeAt(Index);\n // A valid sequence comprises four hexdigits (case-\n // insensitive) that form a single hexadecimal value.\n if (!(charCode >= 48 && charCode <= 57 || charCode >= 97 && charCode <= 102 || charCode >= 65 && charCode <= 70)) {\n // Invalid Unicode escape sequence.\n abort();\n }\n }\n // Revive the escaped character.\n value += fromCharCode(\"0x\" + source.slice(begin, Index));\n break;\n default:\n // Invalid escape sequence.\n abort();\n }\n } else {\n if (charCode == 34) {\n // An unescaped double-quote character marks the end of the\n // string.\n break;\n }\n charCode = source.charCodeAt(Index);\n begin = Index;\n // Optimize for the common case where a string is valid.\n while (charCode >= 32 && charCode != 92 && charCode != 34) {\n charCode = source.charCodeAt(++Index);\n }\n // Append the string as-is.\n value += source.slice(begin, Index);\n }\n }\n if (source.charCodeAt(Index) == 34) {\n // Advance to the next character and return the revived string.\n Index++;\n return value;\n }\n // Unterminated string.\n abort();\n default:\n // Parse numbers and literals.\n begin = Index;\n // Advance past the negative sign, if one is specified.\n if (charCode == 45) {\n isSigned = true;\n charCode = source.charCodeAt(++Index);\n }\n // Parse an integer or floating-point value.\n if (charCode >= 48 && charCode <= 57) {\n // Leading zeroes are interpreted as octal literals.\n if (charCode == 48 && ((charCode = source.charCodeAt(Index + 1)), charCode >= 48 && charCode <= 57)) {\n // Illegal octal literal.\n abort();\n }\n isSigned = false;\n // Parse the integer component.\n for (; Index < length && ((charCode = source.charCodeAt(Index)), charCode >= 48 && charCode <= 57); Index++);\n // Floats cannot contain a leading decimal point; however, this\n // case is already accounted for by the parser.\n if (source.charCodeAt(Index) == 46) {\n position = ++Index;\n // Parse the decimal component.\n for (; position < length && ((charCode = source.charCodeAt(position)), charCode >= 48 && charCode <= 57); position++);\n if (position == Index) {\n // Illegal trailing decimal.\n abort();\n }\n Index = position;\n }\n // Parse exponents. The `e` denoting the exponent is\n // case-insensitive.\n charCode = source.charCodeAt(Index);\n if (charCode == 101 || charCode == 69) {\n charCode = source.charCodeAt(++Index);\n // Skip past the sign following the exponent, if one is\n // specified.\n if (charCode == 43 || charCode == 45) {\n Index++;\n }\n // Parse the exponential component.\n for (position = Index; position < length && ((charCode = source.charCodeAt(position)), charCode >= 48 && charCode <= 57); position++);\n if (position == Index) {\n // Illegal empty exponent.\n abort();\n }\n Index = position;\n }\n // Coerce the parsed value to a JavaScript number.\n return +source.slice(begin, Index);\n }\n // A negative sign may only precede numbers.\n if (isSigned) {\n abort();\n }\n // `true`, `false`, and `null` literals.\n if (source.slice(Index, Index + 4) == \"true\") {\n Index += 4;\n return true;\n } else if (source.slice(Index, Index + 5) == \"false\") {\n Index += 5;\n return false;\n } else if (source.slice(Index, Index + 4) == \"null\") {\n Index += 4;\n return null;\n }\n // Unrecognized token.\n abort();\n }\n }\n // Return the sentinel `$` character if the parser has reached the end\n // of the source string.\n return \"$\";\n };\n\n // Internal: Parses a JSON `value` token.\n var get = function (value) {\n var results, hasMembers;\n if (value == \"$\") {\n // Unexpected end of input.\n abort();\n }\n if (typeof value == \"string\") {\n if ((charIndexBuggy ? value.charAt(0) : value[0]) == \"@\") {\n // Remove the sentinel `@` character.\n return value.slice(1);\n }\n // Parse object and array literals.\n if (value == \"[\") {\n // Parses a JSON array, returning a new JavaScript array.\n results = [];\n for (;; hasMembers || (hasMembers = true)) {\n value = lex();\n // A closing square bracket marks the end of the array literal.\n if (value == \"]\") {\n break;\n }\n // If the array literal contains elements, the current token\n // should be a comma separating the previous element from the\n // next.\n if (hasMembers) {\n if (value == \",\") {\n value = lex();\n if (value == \"]\") {\n // Unexpected trailing `,` in array literal.\n abort();\n }\n } else {\n // A `,` must separate each array element.\n abort();\n }\n }\n // Elisions and leading commas are not permitted.\n if (value == \",\") {\n abort();\n }\n results.push(get(value));\n }\n return results;\n } else if (value == \"{\") {\n // Parses a JSON object, returning a new JavaScript object.\n results = {};\n for (;; hasMembers || (hasMembers = true)) {\n value = lex();\n // A closing curly brace marks the end of the object literal.\n if (value == \"}\") {\n break;\n }\n // If the object literal contains members, the current token\n // should be a comma separator.\n if (hasMembers) {\n if (value == \",\") {\n value = lex();\n if (value == \"}\") {\n // Unexpected trailing `,` in object literal.\n abort();\n }\n } else {\n // A `,` must separate each object member.\n abort();\n }\n }\n // Leading commas are not permitted, object property names must be\n // double-quoted strings, and a `:` must separate each property\n // name and value.\n if (value == \",\" || typeof value != \"string\" || (charIndexBuggy ? value.charAt(0) : value[0]) != \"@\" || lex() != \":\") {\n abort();\n }\n results[value.slice(1)] = get(lex());\n }\n return results;\n }\n // Unexpected token encountered.\n abort();\n }\n return value;\n };\n\n // Internal: Updates a traversed object member.\n var update = function (source, property, callback) {\n var element = walk(source, property, callback);\n if (element === undef) {\n delete source[property];\n } else {\n source[property] = element;\n }\n };\n\n // Internal: Recursively traverses a parsed JSON object, invoking the\n // `callback` function for each value. This is an implementation of the\n // `Walk(holder, name)` operation defined in ES 5.1 section 15.12.2.\n var walk = function (source, property, callback) {\n var value = source[property], length;\n if (typeof value == \"object\" && value) {\n // `forEach` can't be used to traverse an array in Opera <= 8.54\n // because its `Object#hasOwnProperty` implementation returns `false`\n // for array indices (e.g., `![1, 2, 3].hasOwnProperty(\"0\")`).\n if (getClass.call(value) == arrayClass) {\n for (length = value.length; length--;) {\n update(value, length, callback);\n }\n } else {\n forEach(value, function (property) {\n update(value, property, callback);\n });\n }\n }\n return callback.call(source, property, value);\n };\n\n // Public: `JSON.parse`. See ES 5.1 section 15.12.2.\n exports.parse = function (source, callback) {\n var result, value;\n Index = 0;\n Source = \"\" + source;\n result = get(lex());\n // If a JSON string contains multiple tokens, it is invalid.\n if (lex() != \"$\") {\n abort();\n }\n // Reset the parser state.\n Index = Source = null;\n return callback && getClass.call(callback) == functionClass ? walk((value = {}, value[\"\"] = result, value), \"\", callback) : result;\n };\n }\n }\n\n exports[\"runInContext\"] = runInContext;\n return exports;\n }\n\n if (freeExports && !isLoader) {\n // Export for CommonJS environments.\n runInContext(root, freeExports);\n } else {\n // Export for web browsers and JavaScript engines.\n var nativeJSON = root.JSON,\n previousJSON = root[\"JSON3\"],\n isRestored = false;\n\n var JSON3 = runInContext(root, (root[\"JSON3\"] = {\n // Public: Restores the original value of the global `JSON` object and\n // returns a reference to the `JSON3` object.\n \"noConflict\": function () {\n if (!isRestored) {\n isRestored = true;\n root.JSON = nativeJSON;\n root[\"JSON3\"] = previousJSON;\n nativeJSON = previousJSON = null;\n }\n return JSON3;\n }\n }));\n\n root.JSON = {\n \"parse\": JSON3.parse,\n \"stringify\": JSON3.stringify\n };\n }\n\n // Export for asynchronous module loaders.\n if (isLoader) {\n define(function () {\n return JSON3;\n });\n }\n}).call(this);\n\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/json3/lib/json3.js\n// module id = 11\n// module chunks = 0","module.exports = function(module) {\r\n\tif(!module.webpackPolyfill) {\r\n\t\tmodule.deprecate = function() {};\r\n\t\tmodule.paths = [];\r\n\t\t// module.parent = undefined by default\r\n\t\tmodule.children = [];\r\n\t\tmodule.webpackPolyfill = 1;\r\n\t}\r\n\treturn module;\r\n}\r\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// (webpack)/buildin/module.js\n// module id = 12\n// module chunks = 0","\n/**\n * Expose `Emitter`.\n */\n\nmodule.exports = Emitter;\n\n/**\n * Initialize a new `Emitter`.\n *\n * @api public\n */\n\nfunction Emitter(obj) {\n if (obj) return mixin(obj);\n};\n\n/**\n * Mixin the emitter properties.\n *\n * @param {Object} obj\n * @return {Object}\n * @api private\n */\n\nfunction mixin(obj) {\n for (var key in Emitter.prototype) {\n obj[key] = Emitter.prototype[key];\n }\n return obj;\n}\n\n/**\n * Listen on the given `event` with `fn`.\n *\n * @param {String} event\n * @param {Function} fn\n * @return {Emitter}\n * @api public\n */\n\nEmitter.prototype.on =\nEmitter.prototype.addEventListener = function(event, fn){\n this._callbacks = this._callbacks || {};\n (this._callbacks[event] = this._callbacks[event] || [])\n .push(fn);\n return this;\n};\n\n/**\n * Adds an `event` listener that will be invoked a single\n * time then automatically removed.\n *\n * @param {String} event\n * @param {Function} fn\n * @return {Emitter}\n * @api public\n */\n\nEmitter.prototype.once = function(event, fn){\n var self = this;\n this._callbacks = this._callbacks || {};\n\n function on() {\n self.off(event, on);\n fn.apply(this, arguments);\n }\n\n on.fn = fn;\n this.on(event, on);\n return this;\n};\n\n/**\n * Remove the given callback for `event` or all\n * registered callbacks.\n *\n * @param {String} event\n * @param {Function} fn\n * @return {Emitter}\n * @api public\n */\n\nEmitter.prototype.off =\nEmitter.prototype.removeListener =\nEmitter.prototype.removeAllListeners =\nEmitter.prototype.removeEventListener = function(event, fn){\n this._callbacks = this._callbacks || {};\n\n // all\n if (0 == arguments.length) {\n this._callbacks = {};\n return this;\n }\n\n // specific event\n var callbacks = this._callbacks[event];\n if (!callbacks) return this;\n\n // remove all handlers\n if (1 == arguments.length) {\n delete this._callbacks[event];\n return this;\n }\n\n // remove specific handler\n var cb;\n for (var i = 0; i < callbacks.length; i++) {\n cb = callbacks[i];\n if (cb === fn || cb.fn === fn) {\n callbacks.splice(i, 1);\n break;\n }\n }\n return this;\n};\n\n/**\n * Emit `event` with the given args.\n *\n * @param {String} event\n * @param {Mixed} ...\n * @return {Emitter}\n */\n\nEmitter.prototype.emit = function(event){\n this._callbacks = this._callbacks || {};\n var args = [].slice.call(arguments, 1)\n , callbacks = this._callbacks[event];\n\n if (callbacks) {\n callbacks = callbacks.slice(0);\n for (var i = 0, len = callbacks.length; i < len; ++i) {\n callbacks[i].apply(this, args);\n }\n }\n\n return this;\n};\n\n/**\n * Return array of callbacks for `event`.\n *\n * @param {String} event\n * @return {Array}\n * @api public\n */\n\nEmitter.prototype.listeners = function(event){\n this._callbacks = this._callbacks || {};\n return this._callbacks[event] || [];\n};\n\n/**\n * Check if this emitter has `event` handlers.\n *\n * @param {String} event\n * @return {Boolean}\n * @api public\n */\n\nEmitter.prototype.hasListeners = function(event){\n return !! this.listeners(event).length;\n};\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/socket.io-parser/~/component-emitter/index.js\n// module id = 13\n// module chunks = 0","/*global Blob,File*/\n\n/**\n * Module requirements\n */\n\nvar isArray = require('isarray');\nvar isBuf = require('./is-buffer');\n\n/**\n * Replaces every Buffer | ArrayBuffer in packet with a numbered placeholder.\n * Anything with blobs or files should be fed through removeBlobs before coming\n * here.\n *\n * @param {Object} packet - socket.io event packet\n * @return {Object} with deconstructed packet and list of buffers\n * @api public\n */\n\nexports.deconstructPacket = function(packet){\n var buffers = [];\n var packetData = packet.data;\n\n function _deconstructPacket(data) {\n if (!data) return data;\n\n if (isBuf(data)) {\n var placeholder = { _placeholder: true, num: buffers.length };\n buffers.push(data);\n return placeholder;\n } else if (isArray(data)) {\n var newData = new Array(data.length);\n for (var i = 0; i < data.length; i++) {\n newData[i] = _deconstructPacket(data[i]);\n }\n return newData;\n } else if ('object' == typeof data && !(data instanceof Date)) {\n var newData = {};\n for (var key in data) {\n newData[key] = _deconstructPacket(data[key]);\n }\n return newData;\n }\n return data;\n }\n\n var pack = packet;\n pack.data = _deconstructPacket(packetData);\n pack.attachments = buffers.length; // number of binary 'attachments'\n return {packet: pack, buffers: buffers};\n};\n\n/**\n * Reconstructs a binary packet from its placeholder packet and buffers\n *\n * @param {Object} packet - event packet with placeholders\n * @param {Array} buffers - binary buffers to put in placeholder positions\n * @return {Object} reconstructed packet\n * @api public\n */\n\nexports.reconstructPacket = function(packet, buffers) {\n var curPlaceHolder = 0;\n\n function _reconstructPacket(data) {\n if (data && data._placeholder) {\n var buf = buffers[data.num]; // appropriate buffer (should be natural order anyway)\n return buf;\n } else if (isArray(data)) {\n for (var i = 0; i < data.length; i++) {\n data[i] = _reconstructPacket(data[i]);\n }\n return data;\n } else if (data && 'object' == typeof data) {\n for (var key in data) {\n data[key] = _reconstructPacket(data[key]);\n }\n return data;\n }\n return data;\n }\n\n packet.data = _reconstructPacket(packet.data);\n packet.attachments = undefined; // no longer useful\n return packet;\n};\n\n/**\n * Asynchronously removes Blobs or Files from data via\n * FileReader's readAsArrayBuffer method. Used before encoding\n * data as msgpack. Calls callback with the blobless data.\n *\n * @param {Object} data\n * @param {Function} callback\n * @api private\n */\n\nexports.removeBlobs = function(data, callback) {\n function _removeBlobs(obj, curKey, containingObject) {\n if (!obj) return obj;\n\n // convert any blob\n if ((global.Blob && obj instanceof Blob) ||\n (global.File && obj instanceof File)) {\n pendingBlobs++;\n\n // async filereader\n var fileReader = new FileReader();\n fileReader.onload = function() { // this.result == arraybuffer\n if (containingObject) {\n containingObject[curKey] = this.result;\n }\n else {\n bloblessData = this.result;\n }\n\n // if nothing pending its callback time\n if(! --pendingBlobs) {\n callback(bloblessData);\n }\n };\n\n fileReader.readAsArrayBuffer(obj); // blob -> arraybuffer\n } else if (isArray(obj)) { // handle array\n for (var i = 0; i < obj.length; i++) {\n _removeBlobs(obj[i], i, obj);\n }\n } else if (obj && 'object' == typeof obj && !isBuf(obj)) { // and object\n for (var key in obj) {\n _removeBlobs(obj[key], key, obj);\n }\n }\n }\n\n var pendingBlobs = 0;\n var bloblessData = data;\n _removeBlobs(bloblessData);\n if (!pendingBlobs) {\n callback(bloblessData);\n }\n};\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/socket.io-parser/binary.js\n// module id = 14\n// module chunks = 0","module.exports = Array.isArray || function (arr) {\n return Object.prototype.toString.call(arr) == '[object Array]';\n};\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/isarray/index.js\n// module id = 15\n// module chunks = 0","\nmodule.exports = isBuf;\n\n/**\n * Returns true if obj is a buffer or an arraybuffer.\n *\n * @api private\n */\n\nfunction isBuf(obj) {\n return (global.Buffer && global.Buffer.isBuffer(obj)) ||\n (global.ArrayBuffer && obj instanceof ArrayBuffer);\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/socket.io-parser/is-buffer.js\n// module id = 16\n// module chunks = 0","\n/**\n * Module dependencies.\n */\n\nvar eio = require('engine.io-client');\nvar Socket = require('./socket');\nvar Emitter = require('component-emitter');\nvar parser = require('socket.io-parser');\nvar on = require('./on');\nvar bind = require('component-bind');\nvar debug = require('debug')('socket.io-client:manager');\nvar indexOf = require('indexof');\nvar Backoff = require('backo2');\n\n/**\n * IE6+ hasOwnProperty\n */\n\nvar has = Object.prototype.hasOwnProperty;\n\n/**\n * Module exports\n */\n\nmodule.exports = Manager;\n\n/**\n * `Manager` constructor.\n *\n * @param {String} engine instance or engine uri/opts\n * @param {Object} options\n * @api public\n */\n\nfunction Manager (uri, opts) {\n if (!(this instanceof Manager)) return new Manager(uri, opts);\n if (uri && ('object' === typeof uri)) {\n opts = uri;\n uri = undefined;\n }\n opts = opts || {};\n\n opts.path = opts.path || '/socket.io';\n this.nsps = {};\n this.subs = [];\n this.opts = opts;\n this.reconnection(opts.reconnection !== false);\n this.reconnectionAttempts(opts.reconnectionAttempts || Infinity);\n this.reconnectionDelay(opts.reconnectionDelay || 1000);\n this.reconnectionDelayMax(opts.reconnectionDelayMax || 5000);\n this.randomizationFactor(opts.randomizationFactor || 0.5);\n this.backoff = new Backoff({\n min: this.reconnectionDelay(),\n max: this.reconnectionDelayMax(),\n jitter: this.randomizationFactor()\n });\n this.timeout(null == opts.timeout ? 20000 : opts.timeout);\n this.readyState = 'closed';\n this.uri = uri;\n this.connecting = [];\n this.lastPing = null;\n this.encoding = false;\n this.packetBuffer = [];\n this.encoder = new parser.Encoder();\n this.decoder = new parser.Decoder();\n this.autoConnect = opts.autoConnect !== false;\n if (this.autoConnect) this.open();\n}\n\n/**\n * Propagate given event to sockets and emit on `this`\n *\n * @api private\n */\n\nManager.prototype.emitAll = function () {\n this.emit.apply(this, arguments);\n for (var nsp in this.nsps) {\n if (has.call(this.nsps, nsp)) {\n this.nsps[nsp].emit.apply(this.nsps[nsp], arguments);\n }\n }\n};\n\n/**\n * Update `socket.id` of all sockets\n *\n * @api private\n */\n\nManager.prototype.updateSocketIds = function () {\n for (var nsp in this.nsps) {\n if (has.call(this.nsps, nsp)) {\n this.nsps[nsp].id = this.engine.id;\n }\n }\n};\n\n/**\n * Mix in `Emitter`.\n */\n\nEmitter(Manager.prototype);\n\n/**\n * Sets the `reconnection` config.\n *\n * @param {Boolean} true/false if it should automatically reconnect\n * @return {Manager} self or value\n * @api public\n */\n\nManager.prototype.reconnection = function (v) {\n if (!arguments.length) return this._reconnection;\n this._reconnection = !!v;\n return this;\n};\n\n/**\n * Sets the reconnection attempts config.\n *\n * @param {Number} max reconnection attempts before giving up\n * @return {Manager} self or value\n * @api public\n */\n\nManager.prototype.reconnectionAttempts = function (v) {\n if (!arguments.length) return this._reconnectionAttempts;\n this._reconnectionAttempts = v;\n return this;\n};\n\n/**\n * Sets the delay between reconnections.\n *\n * @param {Number} delay\n * @return {Manager} self or value\n * @api public\n */\n\nManager.prototype.reconnectionDelay = function (v) {\n if (!arguments.length) return this._reconnectionDelay;\n this._reconnectionDelay = v;\n this.backoff && this.backoff.setMin(v);\n return this;\n};\n\nManager.prototype.randomizationFactor = function (v) {\n if (!arguments.length) return this._randomizationFactor;\n this._randomizationFactor = v;\n this.backoff && this.backoff.setJitter(v);\n return this;\n};\n\n/**\n * Sets the maximum delay between reconnections.\n *\n * @param {Number} delay\n * @return {Manager} self or value\n * @api public\n */\n\nManager.prototype.reconnectionDelayMax = function (v) {\n if (!arguments.length) return this._reconnectionDelayMax;\n this._reconnectionDelayMax = v;\n this.backoff && this.backoff.setMax(v);\n return this;\n};\n\n/**\n * Sets the connection timeout. `false` to disable\n *\n * @return {Manager} self or value\n * @api public\n */\n\nManager.prototype.timeout = function (v) {\n if (!arguments.length) return this._timeout;\n this._timeout = v;\n return this;\n};\n\n/**\n * Starts trying to reconnect if reconnection is enabled and we have not\n * started reconnecting yet\n *\n * @api private\n */\n\nManager.prototype.maybeReconnectOnOpen = function () {\n // Only try to reconnect if it's the first time we're connecting\n if (!this.reconnecting && this._reconnection && this.backoff.attempts === 0) {\n // keeps reconnection from firing twice for the same reconnection loop\n this.reconnect();\n }\n};\n\n/**\n * Sets the current transport `socket`.\n *\n * @param {Function} optional, callback\n * @return {Manager} self\n * @api public\n */\n\nManager.prototype.open =\nManager.prototype.connect = function (fn, opts) {\n debug('readyState %s', this.readyState);\n if (~this.readyState.indexOf('open')) return this;\n\n debug('opening %s', this.uri);\n this.engine = eio(this.uri, this.opts);\n var socket = this.engine;\n var self = this;\n this.readyState = 'opening';\n this.skipReconnect = false;\n\n // emit `open`\n var openSub = on(socket, 'open', function () {\n self.onopen();\n fn && fn();\n });\n\n // emit `connect_error`\n var errorSub = on(socket, 'error', function (data) {\n debug('connect_error');\n self.cleanup();\n self.readyState = 'closed';\n self.emitAll('connect_error', data);\n if (fn) {\n var err = new Error('Connection error');\n err.data = data;\n fn(err);\n } else {\n // Only do this if there is no fn to handle the error\n self.maybeReconnectOnOpen();\n }\n });\n\n // emit `connect_timeout`\n if (false !== this._timeout) {\n var timeout = this._timeout;\n debug('connect attempt will timeout after %d', timeout);\n\n // set timer\n var timer = setTimeout(function () {\n debug('connect attempt timed out after %d', timeout);\n openSub.destroy();\n socket.close();\n socket.emit('error', 'timeout');\n self.emitAll('connect_timeout', timeout);\n }, timeout);\n\n this.subs.push({\n destroy: function () {\n clearTimeout(timer);\n }\n });\n }\n\n this.subs.push(openSub);\n this.subs.push(errorSub);\n\n return this;\n};\n\n/**\n * Called upon transport open.\n *\n * @api private\n */\n\nManager.prototype.onopen = function () {\n debug('open');\n\n // clear old subs\n this.cleanup();\n\n // mark as open\n this.readyState = 'open';\n this.emit('open');\n\n // add new subs\n var socket = this.engine;\n this.subs.push(on(socket, 'data', bind(this, 'ondata')));\n this.subs.push(on(socket, 'ping', bind(this, 'onping')));\n this.subs.push(on(socket, 'pong', bind(this, 'onpong')));\n this.subs.push(on(socket, 'error', bind(this, 'onerror')));\n this.subs.push(on(socket, 'close', bind(this, 'onclose')));\n this.subs.push(on(this.decoder, 'decoded', bind(this, 'ondecoded')));\n};\n\n/**\n * Called upon a ping.\n *\n * @api private\n */\n\nManager.prototype.onping = function () {\n this.lastPing = new Date();\n this.emitAll('ping');\n};\n\n/**\n * Called upon a packet.\n *\n * @api private\n */\n\nManager.prototype.onpong = function () {\n this.emitAll('pong', new Date() - this.lastPing);\n};\n\n/**\n * Called with data.\n *\n * @api private\n */\n\nManager.prototype.ondata = function (data) {\n this.decoder.add(data);\n};\n\n/**\n * Called when parser fully decodes a packet.\n *\n * @api private\n */\n\nManager.prototype.ondecoded = function (packet) {\n this.emit('packet', packet);\n};\n\n/**\n * Called upon socket error.\n *\n * @api private\n */\n\nManager.prototype.onerror = function (err) {\n debug('error', err);\n this.emitAll('error', err);\n};\n\n/**\n * Creates a new socket for the given `nsp`.\n *\n * @return {Socket}\n * @api public\n */\n\nManager.prototype.socket = function (nsp, opts) {\n var socket = this.nsps[nsp];\n if (!socket) {\n socket = new Socket(this, nsp, opts);\n this.nsps[nsp] = socket;\n var self = this;\n socket.on('connecting', onConnecting);\n socket.on('connect', function () {\n socket.id = self.engine.id;\n });\n\n if (this.autoConnect) {\n // manually call here since connecting evnet is fired before listening\n onConnecting();\n }\n }\n\n function onConnecting () {\n if (!~indexOf(self.connecting, socket)) {\n self.connecting.push(socket);\n }\n }\n\n return socket;\n};\n\n/**\n * Called upon a socket close.\n *\n * @param {Socket} socket\n */\n\nManager.prototype.destroy = function (socket) {\n var index = indexOf(this.connecting, socket);\n if (~index) this.connecting.splice(index, 1);\n if (this.connecting.length) return;\n\n this.close();\n};\n\n/**\n * Writes a packet.\n *\n * @param {Object} packet\n * @api private\n */\n\nManager.prototype.packet = function (packet) {\n debug('writing packet %j', packet);\n var self = this;\n if (packet.query && packet.type === 0) packet.nsp += '?' + packet.query;\n\n if (!self.encoding) {\n // encode, then write to engine with result\n self.encoding = true;\n this.encoder.encode(packet, function (encodedPackets) {\n for (var i = 0; i < encodedPackets.length; i++) {\n self.engine.write(encodedPackets[i], packet.options);\n }\n self.encoding = false;\n self.processPacketQueue();\n });\n } else { // add packet to the queue\n self.packetBuffer.push(packet);\n }\n};\n\n/**\n * If packet buffer is non-empty, begins encoding the\n * next packet in line.\n *\n * @api private\n */\n\nManager.prototype.processPacketQueue = function () {\n if (this.packetBuffer.length > 0 && !this.encoding) {\n var pack = this.packetBuffer.shift();\n this.packet(pack);\n }\n};\n\n/**\n * Clean up transport subscriptions and packet buffer.\n *\n * @api private\n */\n\nManager.prototype.cleanup = function () {\n debug('cleanup');\n\n var subsLength = this.subs.length;\n for (var i = 0; i < subsLength; i++) {\n var sub = this.subs.shift();\n sub.destroy();\n }\n\n this.packetBuffer = [];\n this.encoding = false;\n this.lastPing = null;\n\n this.decoder.destroy();\n};\n\n/**\n * Close the current socket.\n *\n * @api private\n */\n\nManager.prototype.close =\nManager.prototype.disconnect = function () {\n debug('disconnect');\n this.skipReconnect = true;\n this.reconnecting = false;\n if ('opening' === this.readyState) {\n // `onclose` will not fire because\n // an open event never happened\n this.cleanup();\n }\n this.backoff.reset();\n this.readyState = 'closed';\n if (this.engine) this.engine.close();\n};\n\n/**\n * Called upon engine close.\n *\n * @api private\n */\n\nManager.prototype.onclose = function (reason) {\n debug('onclose');\n\n this.cleanup();\n this.backoff.reset();\n this.readyState = 'closed';\n this.emit('close', reason);\n\n if (this._reconnection && !this.skipReconnect) {\n this.reconnect();\n }\n};\n\n/**\n * Attempt a reconnection.\n *\n * @api private\n */\n\nManager.prototype.reconnect = function () {\n if (this.reconnecting || this.skipReconnect) return this;\n\n var self = this;\n\n if (this.backoff.attempts >= this._reconnectionAttempts) {\n debug('reconnect failed');\n this.backoff.reset();\n this.emitAll('reconnect_failed');\n this.reconnecting = false;\n } else {\n var delay = this.backoff.duration();\n debug('will wait %dms before reconnect attempt', delay);\n\n this.reconnecting = true;\n var timer = setTimeout(function () {\n if (self.skipReconnect) return;\n\n debug('attempting reconnect');\n self.emitAll('reconnect_attempt', self.backoff.attempts);\n self.emitAll('reconnecting', self.backoff.attempts);\n\n // check again for the case socket closed in above events\n if (self.skipReconnect) return;\n\n self.open(function (err) {\n if (err) {\n debug('reconnect attempt error');\n self.reconnecting = false;\n self.reconnect();\n self.emitAll('reconnect_error', err.data);\n } else {\n debug('reconnect success');\n self.onreconnect();\n }\n });\n }, delay);\n\n this.subs.push({\n destroy: function () {\n clearTimeout(timer);\n }\n });\n }\n};\n\n/**\n * Called upon successful reconnect.\n *\n * @api private\n */\n\nManager.prototype.onreconnect = function () {\n var attempt = this.backoff.attempts;\n this.reconnecting = false;\n this.backoff.reset();\n this.updateSocketIds();\n this.emitAll('reconnect', attempt);\n};\n\n\n\n// WEBPACK FOOTER //\n// lib/manager.js","\nmodule.exports = require('./lib/index');\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/engine.io-client/index.js\n// module id = 18\n// module chunks = 0","\nmodule.exports = require('./socket');\n\n/**\n * Exports parser\n *\n * @api public\n *\n */\nmodule.exports.parser = require('engine.io-parser');\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/engine.io-client/lib/index.js\n// module id = 19\n// module chunks = 0","/**\n * Module dependencies.\n */\n\nvar transports = require('./transports/index');\nvar Emitter = require('component-emitter');\nvar debug = require('debug')('engine.io-client:socket');\nvar index = require('indexof');\nvar parser = require('engine.io-parser');\nvar parseuri = require('parseuri');\nvar parsejson = require('parsejson');\nvar parseqs = require('parseqs');\n\n/**\n * Module exports.\n */\n\nmodule.exports = Socket;\n\n/**\n * Socket constructor.\n *\n * @param {String|Object} uri or options\n * @param {Object} options\n * @api public\n */\n\nfunction Socket (uri, opts) {\n if (!(this instanceof Socket)) return new Socket(uri, opts);\n\n opts = opts || {};\n\n if (uri && 'object' === typeof uri) {\n opts = uri;\n uri = null;\n }\n\n if (uri) {\n uri = parseuri(uri);\n opts.hostname = uri.host;\n opts.secure = uri.protocol === 'https' || uri.protocol === 'wss';\n opts.port = uri.port;\n if (uri.query) opts.query = uri.query;\n } else if (opts.host) {\n opts.hostname = parseuri(opts.host).host;\n }\n\n this.secure = null != opts.secure ? opts.secure\n : (global.location && 'https:' === location.protocol);\n\n if (opts.hostname && !opts.port) {\n // if no port is specified manually, use the protocol default\n opts.port = this.secure ? '443' : '80';\n }\n\n this.agent = opts.agent || false;\n this.hostname = opts.hostname ||\n (global.location ? location.hostname : 'localhost');\n this.port = opts.port || (global.location && location.port\n ? location.port\n : (this.secure ? 443 : 80));\n this.query = opts.query || {};\n if ('string' === typeof this.query) this.query = parseqs.decode(this.query);\n this.upgrade = false !== opts.upgrade;\n this.path = (opts.path || '/engine.io').replace(/\\/$/, '') + '/';\n this.forceJSONP = !!opts.forceJSONP;\n this.jsonp = false !== opts.jsonp;\n this.forceBase64 = !!opts.forceBase64;\n this.enablesXDR = !!opts.enablesXDR;\n this.timestampParam = opts.timestampParam || 't';\n this.timestampRequests = opts.timestampRequests;\n this.transports = opts.transports || ['polling', 'websocket'];\n this.readyState = '';\n this.writeBuffer = [];\n this.prevBufferLen = 0;\n this.policyPort = opts.policyPort || 843;\n this.rememberUpgrade = opts.rememberUpgrade || false;\n this.binaryType = null;\n this.onlyBinaryUpgrades = opts.onlyBinaryUpgrades;\n this.perMessageDeflate = false !== opts.perMessageDeflate ? (opts.perMessageDeflate || {}) : false;\n\n if (true === this.perMessageDeflate) this.perMessageDeflate = {};\n if (this.perMessageDeflate && null == this.perMessageDeflate.threshold) {\n this.perMessageDeflate.threshold = 1024;\n }\n\n // SSL options for Node.js client\n this.pfx = opts.pfx || null;\n this.key = opts.key || null;\n this.passphrase = opts.passphrase || null;\n this.cert = opts.cert || null;\n this.ca = opts.ca || null;\n this.ciphers = opts.ciphers || null;\n this.rejectUnauthorized = opts.rejectUnauthorized === undefined ? null : opts.rejectUnauthorized;\n this.forceNode = !!opts.forceNode;\n\n // other options for Node.js client\n var freeGlobal = typeof global === 'object' && global;\n if (freeGlobal.global === freeGlobal) {\n if (opts.extraHeaders && Object.keys(opts.extraHeaders).length > 0) {\n this.extraHeaders = opts.extraHeaders;\n }\n\n if (opts.localAddress) {\n this.localAddress = opts.localAddress;\n }\n }\n\n // set on handshake\n this.id = null;\n this.upgrades = null;\n this.pingInterval = null;\n this.pingTimeout = null;\n\n // set on heartbeat\n this.pingIntervalTimer = null;\n this.pingTimeoutTimer = null;\n\n this.open();\n}\n\nSocket.priorWebsocketSuccess = false;\n\n/**\n * Mix in `Emitter`.\n */\n\nEmitter(Socket.prototype);\n\n/**\n * Protocol version.\n *\n * @api public\n */\n\nSocket.protocol = parser.protocol; // this is an int\n\n/**\n * Expose deps for legacy compatibility\n * and standalone browser access.\n */\n\nSocket.Socket = Socket;\nSocket.Transport = require('./transport');\nSocket.transports = require('./transports/index');\nSocket.parser = require('engine.io-parser');\n\n/**\n * Creates transport of the given type.\n *\n * @param {String} transport name\n * @return {Transport}\n * @api private\n */\n\nSocket.prototype.createTransport = function (name) {\n debug('creating transport \"%s\"', name);\n var query = clone(this.query);\n\n // append engine.io protocol identifier\n query.EIO = parser.protocol;\n\n // transport name\n query.transport = name;\n\n // session id if we already have one\n if (this.id) query.sid = this.id;\n\n var transport = new transports[name]({\n agent: this.agent,\n hostname: this.hostname,\n port: this.port,\n secure: this.secure,\n path: this.path,\n query: query,\n forceJSONP: this.forceJSONP,\n jsonp: this.jsonp,\n forceBase64: this.forceBase64,\n enablesXDR: this.enablesXDR,\n timestampRequests: this.timestampRequests,\n timestampParam: this.timestampParam,\n policyPort: this.policyPort,\n socket: this,\n pfx: this.pfx,\n key: this.key,\n passphrase: this.passphrase,\n cert: this.cert,\n ca: this.ca,\n ciphers: this.ciphers,\n rejectUnauthorized: this.rejectUnauthorized,\n perMessageDeflate: this.perMessageDeflate,\n extraHeaders: this.extraHeaders,\n forceNode: this.forceNode,\n localAddress: this.localAddress\n });\n\n return transport;\n};\n\nfunction clone (obj) {\n var o = {};\n for (var i in obj) {\n if (obj.hasOwnProperty(i)) {\n o[i] = obj[i];\n }\n }\n return o;\n}\n\n/**\n * Initializes transport to use and starts probe.\n *\n * @api private\n */\nSocket.prototype.open = function () {\n var transport;\n if (this.rememberUpgrade && Socket.priorWebsocketSuccess && this.transports.indexOf('websocket') !== -1) {\n transport = 'websocket';\n } else if (0 === this.transports.length) {\n // Emit error on next tick so it can be listened to\n var self = this;\n setTimeout(function () {\n self.emit('error', 'No transports available');\n }, 0);\n return;\n } else {\n transport = this.transports[0];\n }\n this.readyState = 'opening';\n\n // Retry with the next transport if the transport is disabled (jsonp: false)\n try {\n transport = this.createTransport(transport);\n } catch (e) {\n this.transports.shift();\n this.open();\n return;\n }\n\n transport.open();\n this.setTransport(transport);\n};\n\n/**\n * Sets the current transport. Disables the existing one (if any).\n *\n * @api private\n */\n\nSocket.prototype.setTransport = function (transport) {\n debug('setting transport %s', transport.name);\n var self = this;\n\n if (this.transport) {\n debug('clearing existing transport %s', this.transport.name);\n this.transport.removeAllListeners();\n }\n\n // set up transport\n this.transport = transport;\n\n // set up transport listeners\n transport\n .on('drain', function () {\n self.onDrain();\n })\n .on('packet', function (packet) {\n self.onPacket(packet);\n })\n .on('error', function (e) {\n self.onError(e);\n })\n .on('close', function () {\n self.onClose('transport close');\n });\n};\n\n/**\n * Probes a transport.\n *\n * @param {String} transport name\n * @api private\n */\n\nSocket.prototype.probe = function (name) {\n debug('probing transport \"%s\"', name);\n var transport = this.createTransport(name, { probe: 1 });\n var failed = false;\n var self = this;\n\n Socket.priorWebsocketSuccess = false;\n\n function onTransportOpen () {\n if (self.onlyBinaryUpgrades) {\n var upgradeLosesBinary = !this.supportsBinary && self.transport.supportsBinary;\n failed = failed || upgradeLosesBinary;\n }\n if (failed) return;\n\n debug('probe transport \"%s\" opened', name);\n transport.send([{ type: 'ping', data: 'probe' }]);\n transport.once('packet', function (msg) {\n if (failed) return;\n if ('pong' === msg.type && 'probe' === msg.data) {\n debug('probe transport \"%s\" pong', name);\n self.upgrading = true;\n self.emit('upgrading', transport);\n if (!transport) return;\n Socket.priorWebsocketSuccess = 'websocket' === transport.name;\n\n debug('pausing current transport \"%s\"', self.transport.name);\n self.transport.pause(function () {\n if (failed) return;\n if ('closed' === self.readyState) return;\n debug('changing transport and sending upgrade packet');\n\n cleanup();\n\n self.setTransport(transport);\n transport.send([{ type: 'upgrade' }]);\n self.emit('upgrade', transport);\n transport = null;\n self.upgrading = false;\n self.flush();\n });\n } else {\n debug('probe transport \"%s\" failed', name);\n var err = new Error('probe error');\n err.transport = transport.name;\n self.emit('upgradeError', err);\n }\n });\n }\n\n function freezeTransport () {\n if (failed) return;\n\n // Any callback called by transport should be ignored since now\n failed = true;\n\n cleanup();\n\n transport.close();\n transport = null;\n }\n\n // Handle any error that happens while probing\n function onerror (err) {\n var error = new Error('probe error: ' + err);\n error.transport = transport.name;\n\n freezeTransport();\n\n debug('probe transport \"%s\" failed because of error: %s', name, err);\n\n self.emit('upgradeError', error);\n }\n\n function onTransportClose () {\n onerror('transport closed');\n }\n\n // When the socket is closed while we're probing\n function onclose () {\n onerror('socket closed');\n }\n\n // When the socket is upgraded while we're probing\n function onupgrade (to) {\n if (transport && to.name !== transport.name) {\n debug('\"%s\" works - aborting \"%s\"', to.name, transport.name);\n freezeTransport();\n }\n }\n\n // Remove all listeners on the transport and on self\n function cleanup () {\n transport.removeListener('open', onTransportOpen);\n transport.removeListener('error', onerror);\n transport.removeListener('close', onTransportClose);\n self.removeListener('close', onclose);\n self.removeListener('upgrading', onupgrade);\n }\n\n transport.once('open', onTransportOpen);\n transport.once('error', onerror);\n transport.once('close', onTransportClose);\n\n this.once('close', onclose);\n this.once('upgrading', onupgrade);\n\n transport.open();\n};\n\n/**\n * Called when connection is deemed open.\n *\n * @api public\n */\n\nSocket.prototype.onOpen = function () {\n debug('socket open');\n this.readyState = 'open';\n Socket.priorWebsocketSuccess = 'websocket' === this.transport.name;\n this.emit('open');\n this.flush();\n\n // we check for `readyState` in case an `open`\n // listener already closed the socket\n if ('open' === this.readyState && this.upgrade && this.transport.pause) {\n debug('starting upgrade probes');\n for (var i = 0, l = this.upgrades.length; i < l; i++) {\n this.probe(this.upgrades[i]);\n }\n }\n};\n\n/**\n * Handles a packet.\n *\n * @api private\n */\n\nSocket.prototype.onPacket = function (packet) {\n if ('opening' === this.readyState || 'open' === this.readyState ||\n 'closing' === this.readyState) {\n debug('socket receive: type \"%s\", data \"%s\"', packet.type, packet.data);\n\n this.emit('packet', packet);\n\n // Socket is live - any packet counts\n this.emit('heartbeat');\n\n switch (packet.type) {\n case 'open':\n this.onHandshake(parsejson(packet.data));\n break;\n\n case 'pong':\n this.setPing();\n this.emit('pong');\n break;\n\n case 'error':\n var err = new Error('server error');\n err.code = packet.data;\n this.onError(err);\n break;\n\n case 'message':\n this.emit('data', packet.data);\n this.emit('message', packet.data);\n break;\n }\n } else {\n debug('packet received with socket readyState \"%s\"', this.readyState);\n }\n};\n\n/**\n * Called upon handshake completion.\n *\n * @param {Object} handshake obj\n * @api private\n */\n\nSocket.prototype.onHandshake = function (data) {\n this.emit('handshake', data);\n this.id = data.sid;\n this.transport.query.sid = data.sid;\n this.upgrades = this.filterUpgrades(data.upgrades);\n this.pingInterval = data.pingInterval;\n this.pingTimeout = data.pingTimeout;\n this.onOpen();\n // In case open handler closes socket\n if ('closed' === this.readyState) return;\n this.setPing();\n\n // Prolong liveness of socket on heartbeat\n this.removeListener('heartbeat', this.onHeartbeat);\n this.on('heartbeat', this.onHeartbeat);\n};\n\n/**\n * Resets ping timeout.\n *\n * @api private\n */\n\nSocket.prototype.onHeartbeat = function (timeout) {\n clearTimeout(this.pingTimeoutTimer);\n var self = this;\n self.pingTimeoutTimer = setTimeout(function () {\n if ('closed' === self.readyState) return;\n self.onClose('ping timeout');\n }, timeout || (self.pingInterval + self.pingTimeout));\n};\n\n/**\n * Pings server every `this.pingInterval` and expects response\n * within `this.pingTimeout` or closes connection.\n *\n * @api private\n */\n\nSocket.prototype.setPing = function () {\n var self = this;\n clearTimeout(self.pingIntervalTimer);\n self.pingIntervalTimer = setTimeout(function () {\n debug('writing ping packet - expecting pong within %sms', self.pingTimeout);\n self.ping();\n self.onHeartbeat(self.pingTimeout);\n }, self.pingInterval);\n};\n\n/**\n* Sends a ping packet.\n*\n* @api private\n*/\n\nSocket.prototype.ping = function () {\n var self = this;\n this.sendPacket('ping', function () {\n self.emit('ping');\n });\n};\n\n/**\n * Called on `drain` event\n *\n * @api private\n */\n\nSocket.prototype.onDrain = function () {\n this.writeBuffer.splice(0, this.prevBufferLen);\n\n // setting prevBufferLen = 0 is very important\n // for example, when upgrading, upgrade packet is sent over,\n // and a nonzero prevBufferLen could cause problems on `drain`\n this.prevBufferLen = 0;\n\n if (0 === this.writeBuffer.length) {\n this.emit('drain');\n } else {\n this.flush();\n }\n};\n\n/**\n * Flush write buffers.\n *\n * @api private\n */\n\nSocket.prototype.flush = function () {\n if ('closed' !== this.readyState && this.transport.writable &&\n !this.upgrading && this.writeBuffer.length) {\n debug('flushing %d packets in socket', this.writeBuffer.length);\n this.transport.send(this.writeBuffer);\n // keep track of current length of writeBuffer\n // splice writeBuffer and callbackBuffer on `drain`\n this.prevBufferLen = this.writeBuffer.length;\n this.emit('flush');\n }\n};\n\n/**\n * Sends a message.\n *\n * @param {String} message.\n * @param {Function} callback function.\n * @param {Object} options.\n * @return {Socket} for chaining.\n * @api public\n */\n\nSocket.prototype.write =\nSocket.prototype.send = function (msg, options, fn) {\n this.sendPacket('message', msg, options, fn);\n return this;\n};\n\n/**\n * Sends a packet.\n *\n * @param {String} packet type.\n * @param {String} data.\n * @param {Object} options.\n * @param {Function} callback function.\n * @api private\n */\n\nSocket.prototype.sendPacket = function (type, data, options, fn) {\n if ('function' === typeof data) {\n fn = data;\n data = undefined;\n }\n\n if ('function' === typeof options) {\n fn = options;\n options = null;\n }\n\n if ('closing' === this.readyState || 'closed' === this.readyState) {\n return;\n }\n\n options = options || {};\n options.compress = false !== options.compress;\n\n var packet = {\n type: type,\n data: data,\n options: options\n };\n this.emit('packetCreate', packet);\n this.writeBuffer.push(packet);\n if (fn) this.once('flush', fn);\n this.flush();\n};\n\n/**\n * Closes the connection.\n *\n * @api private\n */\n\nSocket.prototype.close = function () {\n if ('opening' === this.readyState || 'open' === this.readyState) {\n this.readyState = 'closing';\n\n var self = this;\n\n if (this.writeBuffer.length) {\n this.once('drain', function () {\n if (this.upgrading) {\n waitForUpgrade();\n } else {\n close();\n }\n });\n } else if (this.upgrading) {\n waitForUpgrade();\n } else {\n close();\n }\n }\n\n function close () {\n self.onClose('forced close');\n debug('socket closing - telling transport to close');\n self.transport.close();\n }\n\n function cleanupAndClose () {\n self.removeListener('upgrade', cleanupAndClose);\n self.removeListener('upgradeError', cleanupAndClose);\n close();\n }\n\n function waitForUpgrade () {\n // wait for upgrade to finish since we can't send packets while pausing a transport\n self.once('upgrade', cleanupAndClose);\n self.once('upgradeError', cleanupAndClose);\n }\n\n return this;\n};\n\n/**\n * Called upon transport error\n *\n * @api private\n */\n\nSocket.prototype.onError = function (err) {\n debug('socket error %j', err);\n Socket.priorWebsocketSuccess = false;\n this.emit('error', err);\n this.onClose('transport error', err);\n};\n\n/**\n * Called upon transport close.\n *\n * @api private\n */\n\nSocket.prototype.onClose = function (reason, desc) {\n if ('opening' === this.readyState || 'open' === this.readyState || 'closing' === this.readyState) {\n debug('socket close with reason: \"%s\"', reason);\n var self = this;\n\n // clear timers\n clearTimeout(this.pingIntervalTimer);\n clearTimeout(this.pingTimeoutTimer);\n\n // stop event from firing again for transport\n this.transport.removeAllListeners('close');\n\n // ensure transport won't stay open\n this.transport.close();\n\n // ignore further transport communication\n this.transport.removeAllListeners();\n\n // set ready state\n this.readyState = 'closed';\n\n // clear session id\n this.id = null;\n\n // emit close event\n this.emit('close', reason, desc);\n\n // clean buffers after, so users can still\n // grab the buffers on `close` event\n self.writeBuffer = [];\n self.prevBufferLen = 0;\n }\n};\n\n/**\n * Filters upgrades, returning only those matching client transports.\n *\n * @param {Array} server upgrades\n * @api private\n *\n */\n\nSocket.prototype.filterUpgrades = function (upgrades) {\n var filteredUpgrades = [];\n for (var i = 0, j = upgrades.length; i < j; i++) {\n if (~index(this.transports, upgrades[i])) filteredUpgrades.push(upgrades[i]);\n }\n return filteredUpgrades;\n};\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/engine.io-client/lib/socket.js\n// module id = 20\n// module chunks = 0","/**\n * Module dependencies\n */\n\nvar XMLHttpRequest = require('xmlhttprequest-ssl');\nvar XHR = require('./polling-xhr');\nvar JSONP = require('./polling-jsonp');\nvar websocket = require('./websocket');\n\n/**\n * Export transports.\n */\n\nexports.polling = polling;\nexports.websocket = websocket;\n\n/**\n * Polling transport polymorphic constructor.\n * Decides on xhr vs jsonp based on feature detection.\n *\n * @api private\n */\n\nfunction polling (opts) {\n var xhr;\n var xd = false;\n var xs = false;\n var jsonp = false !== opts.jsonp;\n\n if (global.location) {\n var isSSL = 'https:' === location.protocol;\n var port = location.port;\n\n // some user agents have empty `location.port`\n if (!port) {\n port = isSSL ? 443 : 80;\n }\n\n xd = opts.hostname !== location.hostname || port !== opts.port;\n xs = opts.secure !== isSSL;\n }\n\n opts.xdomain = xd;\n opts.xscheme = xs;\n xhr = new XMLHttpRequest(opts);\n\n if ('open' in xhr && !opts.forceJSONP) {\n return new XHR(opts);\n } else {\n if (!jsonp) throw new Error('JSONP disabled');\n return new JSONP(opts);\n }\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/engine.io-client/lib/transports/index.js\n// module id = 21\n// module chunks = 0","// browser shim for xmlhttprequest module\n\nvar hasCORS = require('has-cors');\n\nmodule.exports = function (opts) {\n var xdomain = opts.xdomain;\n\n // scheme must be same when usign XDomainRequest\n // http://blogs.msdn.com/b/ieinternals/archive/2010/05/13/xdomainrequest-restrictions-limitations-and-workarounds.aspx\n var xscheme = opts.xscheme;\n\n // XDomainRequest has a flow of not sending cookie, therefore it should be disabled as a default.\n // https://github.com/Automattic/engine.io-client/pull/217\n var enablesXDR = opts.enablesXDR;\n\n // XMLHttpRequest can be disabled on IE\n try {\n if ('undefined' !== typeof XMLHttpRequest && (!xdomain || hasCORS)) {\n return new XMLHttpRequest();\n }\n } catch (e) { }\n\n // Use XDomainRequest for IE8 if enablesXDR is true\n // because loading bar keeps flashing when using jsonp-polling\n // https://github.com/yujiosaka/socke.io-ie8-loading-example\n try {\n if ('undefined' !== typeof XDomainRequest && !xscheme && enablesXDR) {\n return new XDomainRequest();\n }\n } catch (e) { }\n\n if (!xdomain) {\n try {\n return new global[['Active'].concat('Object').join('X')]('Microsoft.XMLHTTP');\n } catch (e) { }\n }\n};\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/engine.io-client/lib/xmlhttprequest.js\n// module id = 22\n// module chunks = 0","\n/**\n * Module exports.\n *\n * Logic borrowed from Modernizr:\n *\n * - https://github.com/Modernizr/Modernizr/blob/master/feature-detects/cors.js\n */\n\ntry {\n module.exports = typeof XMLHttpRequest !== 'undefined' &&\n 'withCredentials' in new XMLHttpRequest();\n} catch (err) {\n // if XMLHttp support is disabled in IE then it will throw\n // when trying to create\n module.exports = false;\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/has-cors/index.js\n// module id = 23\n// module chunks = 0","/**\n * Module requirements.\n */\n\nvar XMLHttpRequest = require('xmlhttprequest-ssl');\nvar Polling = require('./polling');\nvar Emitter = require('component-emitter');\nvar inherit = require('component-inherit');\nvar debug = require('debug')('engine.io-client:polling-xhr');\n\n/**\n * Module exports.\n */\n\nmodule.exports = XHR;\nmodule.exports.Request = Request;\n\n/**\n * Empty function\n */\n\nfunction empty () {}\n\n/**\n * XHR Polling constructor.\n *\n * @param {Object} opts\n * @api public\n */\n\nfunction XHR (opts) {\n Polling.call(this, opts);\n this.requestTimeout = opts.requestTimeout;\n\n if (global.location) {\n var isSSL = 'https:' === location.protocol;\n var port = location.port;\n\n // some user agents have empty `location.port`\n if (!port) {\n port = isSSL ? 443 : 80;\n }\n\n this.xd = opts.hostname !== global.location.hostname ||\n port !== opts.port;\n this.xs = opts.secure !== isSSL;\n } else {\n this.extraHeaders = opts.extraHeaders;\n }\n}\n\n/**\n * Inherits from Polling.\n */\n\ninherit(XHR, Polling);\n\n/**\n * XHR supports binary\n */\n\nXHR.prototype.supportsBinary = true;\n\n/**\n * Creates a request.\n *\n * @param {String} method\n * @api private\n */\n\nXHR.prototype.request = function (opts) {\n opts = opts || {};\n opts.uri = this.uri();\n opts.xd = this.xd;\n opts.xs = this.xs;\n opts.agent = this.agent || false;\n opts.supportsBinary = this.supportsBinary;\n opts.enablesXDR = this.enablesXDR;\n\n // SSL options for Node.js client\n opts.pfx = this.pfx;\n opts.key = this.key;\n opts.passphrase = this.passphrase;\n opts.cert = this.cert;\n opts.ca = this.ca;\n opts.ciphers = this.ciphers;\n opts.rejectUnauthorized = this.rejectUnauthorized;\n opts.requestTimeout = this.requestTimeout;\n\n // other options for Node.js client\n opts.extraHeaders = this.extraHeaders;\n\n return new Request(opts);\n};\n\n/**\n * Sends data.\n *\n * @param {String} data to send.\n * @param {Function} called upon flush.\n * @api private\n */\n\nXHR.prototype.doWrite = function (data, fn) {\n var isBinary = typeof data !== 'string' && data !== undefined;\n var req = this.request({ method: 'POST', data: data, isBinary: isBinary });\n var self = this;\n req.on('success', fn);\n req.on('error', function (err) {\n self.onError('xhr post error', err);\n });\n this.sendXhr = req;\n};\n\n/**\n * Starts a poll cycle.\n *\n * @api private\n */\n\nXHR.prototype.doPoll = function () {\n debug('xhr poll');\n var req = this.request();\n var self = this;\n req.on('data', function (data) {\n self.onData(data);\n });\n req.on('error', function (err) {\n self.onError('xhr poll error', err);\n });\n this.pollXhr = req;\n};\n\n/**\n * Request constructor\n *\n * @param {Object} options\n * @api public\n */\n\nfunction Request (opts) {\n this.method = opts.method || 'GET';\n this.uri = opts.uri;\n this.xd = !!opts.xd;\n this.xs = !!opts.xs;\n this.async = false !== opts.async;\n this.data = undefined !== opts.data ? opts.data : null;\n this.agent = opts.agent;\n this.isBinary = opts.isBinary;\n this.supportsBinary = opts.supportsBinary;\n this.enablesXDR = opts.enablesXDR;\n this.requestTimeout = opts.requestTimeout;\n\n // SSL options for Node.js client\n this.pfx = opts.pfx;\n this.key = opts.key;\n this.passphrase = opts.passphrase;\n this.cert = opts.cert;\n this.ca = opts.ca;\n this.ciphers = opts.ciphers;\n this.rejectUnauthorized = opts.rejectUnauthorized;\n\n // other options for Node.js client\n this.extraHeaders = opts.extraHeaders;\n\n this.create();\n}\n\n/**\n * Mix in `Emitter`.\n */\n\nEmitter(Request.prototype);\n\n/**\n * Creates the XHR object and sends the request.\n *\n * @api private\n */\n\nRequest.prototype.create = function () {\n var opts = { agent: this.agent, xdomain: this.xd, xscheme: this.xs, enablesXDR: this.enablesXDR };\n\n // SSL options for Node.js client\n opts.pfx = this.pfx;\n opts.key = this.key;\n opts.passphrase = this.passphrase;\n opts.cert = this.cert;\n opts.ca = this.ca;\n opts.ciphers = this.ciphers;\n opts.rejectUnauthorized = this.rejectUnauthorized;\n\n var xhr = this.xhr = new XMLHttpRequest(opts);\n var self = this;\n\n try {\n debug('xhr open %s: %s', this.method, this.uri);\n xhr.open(this.method, this.uri, this.async);\n try {\n if (this.extraHeaders) {\n xhr.setDisableHeaderCheck(true);\n for (var i in this.extraHeaders) {\n if (this.extraHeaders.hasOwnProperty(i)) {\n xhr.setRequestHeader(i, this.extraHeaders[i]);\n }\n }\n }\n } catch (e) {}\n if (this.supportsBinary) {\n // This has to be done after open because Firefox is stupid\n // http://stackoverflow.com/questions/13216903/get-binary-data-with-xmlhttprequest-in-a-firefox-extension\n xhr.responseType = 'arraybuffer';\n }\n\n if ('POST' === this.method) {\n try {\n if (this.isBinary) {\n xhr.setRequestHeader('Content-type', 'application/octet-stream');\n } else {\n xhr.setRequestHeader('Content-type', 'text/plain;charset=UTF-8');\n }\n } catch (e) {}\n }\n\n try {\n xhr.setRequestHeader('Accept', '*/*');\n } catch (e) {}\n\n // ie6 check\n if ('withCredentials' in xhr) {\n xhr.withCredentials = true;\n }\n\n if (this.requestTimeout) {\n xhr.timeout = this.requestTimeout;\n }\n\n if (this.hasXDR()) {\n xhr.onload = function () {\n self.onLoad();\n };\n xhr.onerror = function () {\n self.onError(xhr.responseText);\n };\n } else {\n xhr.onreadystatechange = function () {\n if (4 !== xhr.readyState) return;\n if (200 === xhr.status || 1223 === xhr.status) {\n self.onLoad();\n } else {\n // make sure the `error` event handler that's user-set\n // does not throw in the same tick and gets caught here\n setTimeout(function () {\n self.onError(xhr.status);\n }, 0);\n }\n };\n }\n\n debug('xhr data %s', this.data);\n xhr.send(this.data);\n } catch (e) {\n // Need to defer since .create() is called directly fhrom the constructor\n // and thus the 'error' event can only be only bound *after* this exception\n // occurs. Therefore, also, we cannot throw here at all.\n setTimeout(function () {\n self.onError(e);\n }, 0);\n return;\n }\n\n if (global.document) {\n this.index = Request.requestsCount++;\n Request.requests[this.index] = this;\n }\n};\n\n/**\n * Called upon successful response.\n *\n * @api private\n */\n\nRequest.prototype.onSuccess = function () {\n this.emit('success');\n this.cleanup();\n};\n\n/**\n * Called if we have data.\n *\n * @api private\n */\n\nRequest.prototype.onData = function (data) {\n this.emit('data', data);\n this.onSuccess();\n};\n\n/**\n * Called upon error.\n *\n * @api private\n */\n\nRequest.prototype.onError = function (err) {\n this.emit('error', err);\n this.cleanup(true);\n};\n\n/**\n * Cleans up house.\n *\n * @api private\n */\n\nRequest.prototype.cleanup = function (fromError) {\n if ('undefined' === typeof this.xhr || null === this.xhr) {\n return;\n }\n // xmlhttprequest\n if (this.hasXDR()) {\n this.xhr.onload = this.xhr.onerror = empty;\n } else {\n this.xhr.onreadystatechange = empty;\n }\n\n if (fromError) {\n try {\n this.xhr.abort();\n } catch (e) {}\n }\n\n if (global.document) {\n delete Request.requests[this.index];\n }\n\n this.xhr = null;\n};\n\n/**\n * Called upon load.\n *\n * @api private\n */\n\nRequest.prototype.onLoad = function () {\n var data;\n try {\n var contentType;\n try {\n contentType = this.xhr.getResponseHeader('Content-Type').split(';')[0];\n } catch (e) {}\n if (contentType === 'application/octet-stream') {\n data = this.xhr.response || this.xhr.responseText;\n } else {\n if (!this.supportsBinary) {\n data = this.xhr.responseText;\n } else {\n try {\n data = String.fromCharCode.apply(null, new Uint8Array(this.xhr.response));\n } catch (e) {\n var ui8Arr = new Uint8Array(this.xhr.response);\n var dataArray = [];\n for (var idx = 0, length = ui8Arr.length; idx < length; idx++) {\n dataArray.push(ui8Arr[idx]);\n }\n\n data = String.fromCharCode.apply(null, dataArray);\n }\n }\n }\n } catch (e) {\n this.onError(e);\n }\n if (null != data) {\n this.onData(data);\n }\n};\n\n/**\n * Check if it has XDomainRequest.\n *\n * @api private\n */\n\nRequest.prototype.hasXDR = function () {\n return 'undefined' !== typeof global.XDomainRequest && !this.xs && this.enablesXDR;\n};\n\n/**\n * Aborts the request.\n *\n * @api public\n */\n\nRequest.prototype.abort = function () {\n this.cleanup();\n};\n\n/**\n * Aborts pending requests when unloading the window. This is needed to prevent\n * memory leaks (e.g. when using IE) and to ensure that no spurious error is\n * emitted.\n */\n\nRequest.requestsCount = 0;\nRequest.requests = {};\n\nif (global.document) {\n if (global.attachEvent) {\n global.attachEvent('onunload', unloadHandler);\n } else if (global.addEventListener) {\n global.addEventListener('beforeunload', unloadHandler, false);\n }\n}\n\nfunction unloadHandler () {\n for (var i in Request.requests) {\n if (Request.requests.hasOwnProperty(i)) {\n Request.requests[i].abort();\n }\n }\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/engine.io-client/lib/transports/polling-xhr.js\n// module id = 24\n// module chunks = 0","/**\n * Module dependencies.\n */\n\nvar Transport = require('../transport');\nvar parseqs = require('parseqs');\nvar parser = require('engine.io-parser');\nvar inherit = require('component-inherit');\nvar yeast = require('yeast');\nvar debug = require('debug')('engine.io-client:polling');\n\n/**\n * Module exports.\n */\n\nmodule.exports = Polling;\n\n/**\n * Is XHR2 supported?\n */\n\nvar hasXHR2 = (function () {\n var XMLHttpRequest = require('xmlhttprequest-ssl');\n var xhr = new XMLHttpRequest({ xdomain: false });\n return null != xhr.responseType;\n})();\n\n/**\n * Polling interface.\n *\n * @param {Object} opts\n * @api private\n */\n\nfunction Polling (opts) {\n var forceBase64 = (opts && opts.forceBase64);\n if (!hasXHR2 || forceBase64) {\n this.supportsBinary = false;\n }\n Transport.call(this, opts);\n}\n\n/**\n * Inherits from Transport.\n */\n\ninherit(Polling, Transport);\n\n/**\n * Transport name.\n */\n\nPolling.prototype.name = 'polling';\n\n/**\n * Opens the socket (triggers polling). We write a PING message to determine\n * when the transport is open.\n *\n * @api private\n */\n\nPolling.prototype.doOpen = function () {\n this.poll();\n};\n\n/**\n * Pauses polling.\n *\n * @param {Function} callback upon buffers are flushed and transport is paused\n * @api private\n */\n\nPolling.prototype.pause = function (onPause) {\n var self = this;\n\n this.readyState = 'pausing';\n\n function pause () {\n debug('paused');\n self.readyState = 'paused';\n onPause();\n }\n\n if (this.polling || !this.writable) {\n var total = 0;\n\n if (this.polling) {\n debug('we are currently polling - waiting to pause');\n total++;\n this.once('pollComplete', function () {\n debug('pre-pause polling complete');\n --total || pause();\n });\n }\n\n if (!this.writable) {\n debug('we are currently writing - waiting to pause');\n total++;\n this.once('drain', function () {\n debug('pre-pause writing complete');\n --total || pause();\n });\n }\n } else {\n pause();\n }\n};\n\n/**\n * Starts polling cycle.\n *\n * @api public\n */\n\nPolling.prototype.poll = function () {\n debug('polling');\n this.polling = true;\n this.doPoll();\n this.emit('poll');\n};\n\n/**\n * Overloads onData to detect payloads.\n *\n * @api private\n */\n\nPolling.prototype.onData = function (data) {\n var self = this;\n debug('polling got data %s', data);\n var callback = function (packet, index, total) {\n // if its the first message we consider the transport open\n if ('opening' === self.readyState) {\n self.onOpen();\n }\n\n // if its a close packet, we close the ongoing requests\n if ('close' === packet.type) {\n self.onClose();\n return false;\n }\n\n // otherwise bypass onData and handle the message\n self.onPacket(packet);\n };\n\n // decode payload\n parser.decodePayload(data, this.socket.binaryType, callback);\n\n // if an event did not trigger closing\n if ('closed' !== this.readyState) {\n // if we got data we're not polling\n this.polling = false;\n this.emit('pollComplete');\n\n if ('open' === this.readyState) {\n this.poll();\n } else {\n debug('ignoring poll - transport state \"%s\"', this.readyState);\n }\n }\n};\n\n/**\n * For polling, send a close packet.\n *\n * @api private\n */\n\nPolling.prototype.doClose = function () {\n var self = this;\n\n function close () {\n debug('writing close packet');\n self.write([{ type: 'close' }]);\n }\n\n if ('open' === this.readyState) {\n debug('transport open - closing');\n close();\n } else {\n // in case we're trying to close while\n // handshaking is in progress (GH-164)\n debug('transport not open - deferring close');\n this.once('open', close);\n }\n};\n\n/**\n * Writes a packets payload.\n *\n * @param {Array} data packets\n * @param {Function} drain callback\n * @api private\n */\n\nPolling.prototype.write = function (packets) {\n var self = this;\n this.writable = false;\n var callbackfn = function () {\n self.writable = true;\n self.emit('drain');\n };\n\n parser.encodePayload(packets, this.supportsBinary, function (data) {\n self.doWrite(data, callbackfn);\n });\n};\n\n/**\n * Generates uri for connection.\n *\n * @api private\n */\n\nPolling.prototype.uri = function () {\n var query = this.query || {};\n var schema = this.secure ? 'https' : 'http';\n var port = '';\n\n // cache busting is forced\n if (false !== this.timestampRequests) {\n query[this.timestampParam] = yeast();\n }\n\n if (!this.supportsBinary && !query.sid) {\n query.b64 = 1;\n }\n\n query = parseqs.encode(query);\n\n // avoid port if default for schema\n if (this.port && (('https' === schema && Number(this.port) !== 443) ||\n ('http' === schema && Number(this.port) !== 80))) {\n port = ':' + this.port;\n }\n\n // prepend ? to query\n if (query.length) {\n query = '?' + query;\n }\n\n var ipv6 = this.hostname.indexOf(':') !== -1;\n return schema + '://' + (ipv6 ? '[' + this.hostname + ']' : this.hostname) + port + this.path + query;\n};\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/engine.io-client/lib/transports/polling.js\n// module id = 25\n// module chunks = 0","/**\n * Module dependencies.\n */\n\nvar parser = require('engine.io-parser');\nvar Emitter = require('component-emitter');\n\n/**\n * Module exports.\n */\n\nmodule.exports = Transport;\n\n/**\n * Transport abstract constructor.\n *\n * @param {Object} options.\n * @api private\n */\n\nfunction Transport (opts) {\n this.path = opts.path;\n this.hostname = opts.hostname;\n this.port = opts.port;\n this.secure = opts.secure;\n this.query = opts.query;\n this.timestampParam = opts.timestampParam;\n this.timestampRequests = opts.timestampRequests;\n this.readyState = '';\n this.agent = opts.agent || false;\n this.socket = opts.socket;\n this.enablesXDR = opts.enablesXDR;\n\n // SSL options for Node.js client\n this.pfx = opts.pfx;\n this.key = opts.key;\n this.passphrase = opts.passphrase;\n this.cert = opts.cert;\n this.ca = opts.ca;\n this.ciphers = opts.ciphers;\n this.rejectUnauthorized = opts.rejectUnauthorized;\n this.forceNode = opts.forceNode;\n\n // other options for Node.js client\n this.extraHeaders = opts.extraHeaders;\n this.localAddress = opts.localAddress;\n}\n\n/**\n * Mix in `Emitter`.\n */\n\nEmitter(Transport.prototype);\n\n/**\n * Emits an error.\n *\n * @param {String} str\n * @return {Transport} for chaining\n * @api public\n */\n\nTransport.prototype.onError = function (msg, desc) {\n var err = new Error(msg);\n err.type = 'TransportError';\n err.description = desc;\n this.emit('error', err);\n return this;\n};\n\n/**\n * Opens the transport.\n *\n * @api public\n */\n\nTransport.prototype.open = function () {\n if ('closed' === this.readyState || '' === this.readyState) {\n this.readyState = 'opening';\n this.doOpen();\n }\n\n return this;\n};\n\n/**\n * Closes the transport.\n *\n * @api private\n */\n\nTransport.prototype.close = function () {\n if ('opening' === this.readyState || 'open' === this.readyState) {\n this.doClose();\n this.onClose();\n }\n\n return this;\n};\n\n/**\n * Sends multiple packets.\n *\n * @param {Array} packets\n * @api private\n */\n\nTransport.prototype.send = function (packets) {\n if ('open' === this.readyState) {\n this.write(packets);\n } else {\n throw new Error('Transport not open');\n }\n};\n\n/**\n * Called upon open\n *\n * @api private\n */\n\nTransport.prototype.onOpen = function () {\n this.readyState = 'open';\n this.writable = true;\n this.emit('open');\n};\n\n/**\n * Called with data.\n *\n * @param {String} data\n * @api private\n */\n\nTransport.prototype.onData = function (data) {\n var packet = parser.decodePacket(data, this.socket.binaryType);\n this.onPacket(packet);\n};\n\n/**\n * Called with a decoded packet.\n */\n\nTransport.prototype.onPacket = function (packet) {\n this.emit('packet', packet);\n};\n\n/**\n * Called upon close.\n *\n * @api private\n */\n\nTransport.prototype.onClose = function () {\n this.readyState = 'closed';\n this.emit('close');\n};\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/engine.io-client/lib/transport.js\n// module id = 26\n// module chunks = 0","/**\n * Module dependencies.\n */\n\nvar keys = require('./keys');\nvar hasBinary = require('has-binary');\nvar sliceBuffer = require('arraybuffer.slice');\nvar after = require('after');\nvar utf8 = require('wtf-8');\n\nvar base64encoder;\nif (global && global.ArrayBuffer) {\n base64encoder = require('base64-arraybuffer');\n}\n\n/**\n * Check if we are running an android browser. That requires us to use\n * ArrayBuffer with polling transports...\n *\n * http://ghinda.net/jpeg-blob-ajax-android/\n */\n\nvar isAndroid = typeof navigator !== 'undefined' && /Android/i.test(navigator.userAgent);\n\n/**\n * Check if we are running in PhantomJS.\n * Uploading a Blob with PhantomJS does not work correctly, as reported here:\n * https://github.com/ariya/phantomjs/issues/11395\n * @type boolean\n */\nvar isPhantomJS = typeof navigator !== 'undefined' && /PhantomJS/i.test(navigator.userAgent);\n\n/**\n * When true, avoids using Blobs to encode payloads.\n * @type boolean\n */\nvar dontSendBlobs = isAndroid || isPhantomJS;\n\n/**\n * Current protocol version.\n */\n\nexports.protocol = 3;\n\n/**\n * Packet types.\n */\n\nvar packets = exports.packets = {\n open: 0 // non-ws\n , close: 1 // non-ws\n , ping: 2\n , pong: 3\n , message: 4\n , upgrade: 5\n , noop: 6\n};\n\nvar packetslist = keys(packets);\n\n/**\n * Premade error packet.\n */\n\nvar err = { type: 'error', data: 'parser error' };\n\n/**\n * Create a blob api even for blob builder when vendor prefixes exist\n */\n\nvar Blob = require('blob');\n\n/**\n * Encodes a packet.\n *\n * <packet type id> [ <data> ]\n *\n * Example:\n *\n * 5hello world\n * 3\n * 4\n *\n * Binary is encoded in an identical principle\n *\n * @api private\n */\n\nexports.encodePacket = function (packet, supportsBinary, utf8encode, callback) {\n if ('function' == typeof supportsBinary) {\n callback = supportsBinary;\n supportsBinary = false;\n }\n\n if ('function' == typeof utf8encode) {\n callback = utf8encode;\n utf8encode = null;\n }\n\n var data = (packet.data === undefined)\n ? undefined\n : packet.data.buffer || packet.data;\n\n if (global.ArrayBuffer && data instanceof ArrayBuffer) {\n return encodeArrayBuffer(packet, supportsBinary, callback);\n } else if (Blob && data instanceof global.Blob) {\n return encodeBlob(packet, supportsBinary, callback);\n }\n\n // might be an object with { base64: true, data: dataAsBase64String }\n if (data && data.base64) {\n return encodeBase64Object(packet, callback);\n }\n\n // Sending data as a utf-8 string\n var encoded = packets[packet.type];\n\n // data fragment is optional\n if (undefined !== packet.data) {\n encoded += utf8encode ? utf8.encode(String(packet.data)) : String(packet.data);\n }\n\n return callback('' + encoded);\n\n};\n\nfunction encodeBase64Object(packet, callback) {\n // packet data is an object { base64: true, data: dataAsBase64String }\n var message = 'b' + exports.packets[packet.type] + packet.data.data;\n return callback(message);\n}\n\n/**\n * Encode packet helpers for binary types\n */\n\nfunction encodeArrayBuffer(packet, supportsBinary, callback) {\n if (!supportsBinary) {\n return exports.encodeBase64Packet(packet, callback);\n }\n\n var data = packet.data;\n var contentArray = new Uint8Array(data);\n var resultBuffer = new Uint8Array(1 + data.byteLength);\n\n resultBuffer[0] = packets[packet.type];\n for (var i = 0; i < contentArray.length; i++) {\n resultBuffer[i+1] = contentArray[i];\n }\n\n return callback(resultBuffer.buffer);\n}\n\nfunction encodeBlobAsArrayBuffer(packet, supportsBinary, callback) {\n if (!supportsBinary) {\n return exports.encodeBase64Packet(packet, callback);\n }\n\n var fr = new FileReader();\n fr.onload = function() {\n packet.data = fr.result;\n exports.encodePacket(packet, supportsBinary, true, callback);\n };\n return fr.readAsArrayBuffer(packet.data);\n}\n\nfunction encodeBlob(packet, supportsBinary, callback) {\n if (!supportsBinary) {\n return exports.encodeBase64Packet(packet, callback);\n }\n\n if (dontSendBlobs) {\n return encodeBlobAsArrayBuffer(packet, supportsBinary, callback);\n }\n\n var length = new Uint8Array(1);\n length[0] = packets[packet.type];\n var blob = new Blob([length.buffer, packet.data]);\n\n return callback(blob);\n}\n\n/**\n * Encodes a packet with binary data in a base64 string\n *\n * @param {Object} packet, has `type` and `data`\n * @return {String} base64 encoded message\n */\n\nexports.encodeBase64Packet = function(packet, callback) {\n var message = 'b' + exports.packets[packet.type];\n if (Blob && packet.data instanceof global.Blob) {\n var fr = new FileReader();\n fr.onload = function() {\n var b64 = fr.result.split(',')[1];\n callback(message + b64);\n };\n return fr.readAsDataURL(packet.data);\n }\n\n var b64data;\n try {\n b64data = String.fromCharCode.apply(null, new Uint8Array(packet.data));\n } catch (e) {\n // iPhone Safari doesn't let you apply with typed arrays\n var typed = new Uint8Array(packet.data);\n var basic = new Array(typed.length);\n for (var i = 0; i < typed.length; i++) {\n basic[i] = typed[i];\n }\n b64data = String.fromCharCode.apply(null, basic);\n }\n message += global.btoa(b64data);\n return callback(message);\n};\n\n/**\n * Decodes a packet. Changes format to Blob if requested.\n *\n * @return {Object} with `type` and `data` (if any)\n * @api private\n */\n\nexports.decodePacket = function (data, binaryType, utf8decode) {\n if (data === undefined) {\n return err;\n }\n // String data\n if (typeof data == 'string') {\n if (data.charAt(0) == 'b') {\n return exports.decodeBase64Packet(data.substr(1), binaryType);\n }\n\n if (utf8decode) {\n data = tryDecode(data);\n if (data === false) {\n return err;\n }\n }\n var type = data.charAt(0);\n\n if (Number(type) != type || !packetslist[type]) {\n return err;\n }\n\n if (data.length > 1) {\n return { type: packetslist[type], data: data.substring(1) };\n } else {\n return { type: packetslist[type] };\n }\n }\n\n var asArray = new Uint8Array(data);\n var type = asArray[0];\n var rest = sliceBuffer(data, 1);\n if (Blob && binaryType === 'blob') {\n rest = new Blob([rest]);\n }\n return { type: packetslist[type], data: rest };\n};\n\nfunction tryDecode(data) {\n try {\n data = utf8.decode(data);\n } catch (e) {\n return false;\n }\n return data;\n}\n\n/**\n * Decodes a packet encoded in a base64 string\n *\n * @param {String} base64 encoded message\n * @return {Object} with `type` and `data` (if any)\n */\n\nexports.decodeBase64Packet = function(msg, binaryType) {\n var type = packetslist[msg.charAt(0)];\n if (!base64encoder) {\n return { type: type, data: { base64: true, data: msg.substr(1) } };\n }\n\n var data = base64encoder.decode(msg.substr(1));\n\n if (binaryType === 'blob' && Blob) {\n data = new Blob([data]);\n }\n\n return { type: type, data: data };\n};\n\n/**\n * Encodes multiple messages (payload).\n *\n * <length>:data\n *\n * Example:\n *\n * 11:hello world2:hi\n *\n * If any contents are binary, they will be encoded as base64 strings. Base64\n * encoded strings are marked with a b before the length specifier\n *\n * @param {Array} packets\n * @api private\n */\n\nexports.encodePayload = function (packets, supportsBinary, callback) {\n if (typeof supportsBinary == 'function') {\n callback = supportsBinary;\n supportsBinary = null;\n }\n\n var isBinary = hasBinary(packets);\n\n if (supportsBinary && isBinary) {\n if (Blob && !dontSendBlobs) {\n return exports.encodePayloadAsBlob(packets, callback);\n }\n\n return exports.encodePayloadAsArrayBuffer(packets, callback);\n }\n\n if (!packets.length) {\n return callback('0:');\n }\n\n function setLengthHeader(message) {\n return message.length + ':' + message;\n }\n\n function encodeOne(packet, doneCallback) {\n exports.encodePacket(packet, !isBinary ? false : supportsBinary, true, function(message) {\n doneCallback(null, setLengthHeader(message));\n });\n }\n\n map(packets, encodeOne, function(err, results) {\n return callback(results.join(''));\n });\n};\n\n/**\n * Async array map using after\n */\n\nfunction map(ary, each, done) {\n var result = new Array(ary.length);\n var next = after(ary.length, done);\n\n var eachWithIndex = function(i, el, cb) {\n each(el, function(error, msg) {\n result[i] = msg;\n cb(error, result);\n });\n };\n\n for (var i = 0; i < ary.length; i++) {\n eachWithIndex(i, ary[i], next);\n }\n}\n\n/*\n * Decodes data when a payload is maybe expected. Possible binary contents are\n * decoded from their base64 representation\n *\n * @param {String} data, callback method\n * @api public\n */\n\nexports.decodePayload = function (data, binaryType, callback) {\n if (typeof data != 'string') {\n return exports.decodePayloadAsBinary(data, binaryType, callback);\n }\n\n if (typeof binaryType === 'function') {\n callback = binaryType;\n binaryType = null;\n }\n\n var packet;\n if (data == '') {\n // parser error - ignoring payload\n return callback(err, 0, 1);\n }\n\n var length = ''\n , n, msg;\n\n for (var i = 0, l = data.length; i < l; i++) {\n var chr = data.charAt(i);\n\n if (':' != chr) {\n length += chr;\n } else {\n if ('' == length || (length != (n = Number(length)))) {\n // parser error - ignoring payload\n return callback(err, 0, 1);\n }\n\n msg = data.substr(i + 1, n);\n\n if (length != msg.length) {\n // parser error - ignoring payload\n return callback(err, 0, 1);\n }\n\n if (msg.length) {\n packet = exports.decodePacket(msg, binaryType, true);\n\n if (err.type == packet.type && err.data == packet.data) {\n // parser error in individual packet - ignoring payload\n return callback(err, 0, 1);\n }\n\n var ret = callback(packet, i + n, l);\n if (false === ret) return;\n }\n\n // advance cursor\n i += n;\n length = '';\n }\n }\n\n if (length != '') {\n // parser error - ignoring payload\n return callback(err, 0, 1);\n }\n\n};\n\n/**\n * Encodes multiple messages (payload) as binary.\n *\n * <1 = binary, 0 = string><number from 0-9><number from 0-9>[...]<number\n * 255><data>\n *\n * Example:\n * 1 3 255 1 2 3, if the binary contents are interpreted as 8 bit integers\n *\n * @param {Array} packets\n * @return {ArrayBuffer} encoded payload\n * @api private\n */\n\nexports.encodePayloadAsArrayBuffer = function(packets, callback) {\n if (!packets.length) {\n return callback(new ArrayBuffer(0));\n }\n\n function encodeOne(packet, doneCallback) {\n exports.encodePacket(packet, true, true, function(data) {\n return doneCallback(null, data);\n });\n }\n\n map(packets, encodeOne, function(err, encodedPackets) {\n var totalLength = encodedPackets.reduce(function(acc, p) {\n var len;\n if (typeof p === 'string'){\n len = p.length;\n } else {\n len = p.byteLength;\n }\n return acc + len.toString().length + len + 2; // string/binary identifier + separator = 2\n }, 0);\n\n var resultArray = new Uint8Array(totalLength);\n\n var bufferIndex = 0;\n encodedPackets.forEach(function(p) {\n var isString = typeof p === 'string';\n var ab = p;\n if (isString) {\n var view = new Uint8Array(p.length);\n for (var i = 0; i < p.length; i++) {\n view[i] = p.charCodeAt(i);\n }\n ab = view.buffer;\n }\n\n if (isString) { // not true binary\n resultArray[bufferIndex++] = 0;\n } else { // true binary\n resultArray[bufferIndex++] = 1;\n }\n\n var lenStr = ab.byteLength.toString();\n for (var i = 0; i < lenStr.length; i++) {\n resultArray[bufferIndex++] = parseInt(lenStr[i]);\n }\n resultArray[bufferIndex++] = 255;\n\n var view = new Uint8Array(ab);\n for (var i = 0; i < view.length; i++) {\n resultArray[bufferIndex++] = view[i];\n }\n });\n\n return callback(resultArray.buffer);\n });\n};\n\n/**\n * Encode as Blob\n */\n\nexports.encodePayloadAsBlob = function(packets, callback) {\n function encodeOne(packet, doneCallback) {\n exports.encodePacket(packet, true, true, function(encoded) {\n var binaryIdentifier = new Uint8Array(1);\n binaryIdentifier[0] = 1;\n if (typeof encoded === 'string') {\n var view = new Uint8Array(encoded.length);\n for (var i = 0; i < encoded.length; i++) {\n view[i] = encoded.charCodeAt(i);\n }\n encoded = view.buffer;\n binaryIdentifier[0] = 0;\n }\n\n var len = (encoded instanceof ArrayBuffer)\n ? encoded.byteLength\n : encoded.size;\n\n var lenStr = len.toString();\n var lengthAry = new Uint8Array(lenStr.length + 1);\n for (var i = 0; i < lenStr.length; i++) {\n lengthAry[i] = parseInt(lenStr[i]);\n }\n lengthAry[lenStr.length] = 255;\n\n if (Blob) {\n var blob = new Blob([binaryIdentifier.buffer, lengthAry.buffer, encoded]);\n doneCallback(null, blob);\n }\n });\n }\n\n map(packets, encodeOne, function(err, results) {\n return callback(new Blob(results));\n });\n};\n\n/*\n * Decodes data when a payload is maybe expected. Strings are decoded by\n * interpreting each byte as a key code for entries marked to start with 0. See\n * description of encodePayloadAsBinary\n *\n * @param {ArrayBuffer} data, callback method\n * @api public\n */\n\nexports.decodePayloadAsBinary = function (data, binaryType, callback) {\n if (typeof binaryType === 'function') {\n callback = binaryType;\n binaryType = null;\n }\n\n var bufferTail = data;\n var buffers = [];\n\n var numberTooLong = false;\n while (bufferTail.byteLength > 0) {\n var tailArray = new Uint8Array(bufferTail);\n var isString = tailArray[0] === 0;\n var msgLength = '';\n\n for (var i = 1; ; i++) {\n if (tailArray[i] == 255) break;\n\n if (msgLength.length > 310) {\n numberTooLong = true;\n break;\n }\n\n msgLength += tailArray[i];\n }\n\n if(numberTooLong) return callback(err, 0, 1);\n\n bufferTail = sliceBuffer(bufferTail, 2 + msgLength.length);\n msgLength = parseInt(msgLength);\n\n var msg = sliceBuffer(bufferTail, 0, msgLength);\n if (isString) {\n try {\n msg = String.fromCharCode.apply(null, new Uint8Array(msg));\n } catch (e) {\n // iPhone Safari doesn't let you apply to typed arrays\n var typed = new Uint8Array(msg);\n msg = '';\n for (var i = 0; i < typed.length; i++) {\n msg += String.fromCharCode(typed[i]);\n }\n }\n }\n\n buffers.push(msg);\n bufferTail = sliceBuffer(bufferTail, msgLength);\n }\n\n var total = buffers.length;\n buffers.forEach(function(buffer, i) {\n callback(exports.decodePacket(buffer, binaryType, true), i, total);\n });\n};\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/engine.io-parser/lib/browser.js\n// module id = 27\n// module chunks = 0","\n/**\n * Gets the keys for an object.\n *\n * @return {Array} keys\n * @api private\n */\n\nmodule.exports = Object.keys || function keys (obj){\n var arr = [];\n var has = Object.prototype.hasOwnProperty;\n\n for (var i in obj) {\n if (has.call(obj, i)) {\n arr.push(i);\n }\n }\n return arr;\n};\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/engine.io-parser/lib/keys.js\n// module id = 28\n// module chunks = 0","\n/*\n * Module requirements.\n */\n\nvar isArray = require('isarray');\n\n/**\n * Module exports.\n */\n\nmodule.exports = hasBinary;\n\n/**\n * Checks for binary data.\n *\n * Right now only Buffer and ArrayBuffer are supported..\n *\n * @param {Object} anything\n * @api public\n */\n\nfunction hasBinary(data) {\n\n function _hasBinary(obj) {\n if (!obj) return false;\n\n if ( (global.Buffer && global.Buffer.isBuffer && global.Buffer.isBuffer(obj)) ||\n (global.ArrayBuffer && obj instanceof ArrayBuffer) ||\n (global.Blob && obj instanceof Blob) ||\n (global.File && obj instanceof File)\n ) {\n return true;\n }\n\n if (isArray(obj)) {\n for (var i = 0; i < obj.length; i++) {\n if (_hasBinary(obj[i])) {\n return true;\n }\n }\n } else if (obj && 'object' == typeof obj) {\n // see: https://github.com/Automattic/has-binary/pull/4\n if (obj.toJSON && 'function' == typeof obj.toJSON) {\n obj = obj.toJSON();\n }\n\n for (var key in obj) {\n if (Object.prototype.hasOwnProperty.call(obj, key) && _hasBinary(obj[key])) {\n return true;\n }\n }\n }\n\n return false;\n }\n\n return _hasBinary(data);\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/has-binary/index.js\n// module id = 29\n// module chunks = 0","/**\n * An abstraction for slicing an arraybuffer even when\n * ArrayBuffer.prototype.slice is not supported\n *\n * @api public\n */\n\nmodule.exports = function(arraybuffer, start, end) {\n var bytes = arraybuffer.byteLength;\n start = start || 0;\n end = end || bytes;\n\n if (arraybuffer.slice) { return arraybuffer.slice(start, end); }\n\n if (start < 0) { start += bytes; }\n if (end < 0) { end += bytes; }\n if (end > bytes) { end = bytes; }\n\n if (start >= bytes || start >= end || bytes === 0) {\n return new ArrayBuffer(0);\n }\n\n var abv = new Uint8Array(arraybuffer);\n var result = new Uint8Array(end - start);\n for (var i = start, ii = 0; i < end; i++, ii++) {\n result[ii] = abv[i];\n }\n return result.buffer;\n};\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/arraybuffer.slice/index.js\n// module id = 30\n// module chunks = 0","module.exports = after\n\nfunction after(count, callback, err_cb) {\n var bail = false\n err_cb = err_cb || noop\n proxy.count = count\n\n return (count === 0) ? callback() : proxy\n\n function proxy(err, result) {\n if (proxy.count <= 0) {\n throw new Error('after called too many times')\n }\n --proxy.count\n\n // after first error, rest are passed to err_cb\n if (err) {\n bail = true\n callback(err)\n // future error callbacks will go to error handler\n callback = err_cb\n } else if (proxy.count === 0 && !bail) {\n callback(null, result)\n }\n }\n}\n\nfunction noop() {}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/after/index.js\n// module id = 31\n// module chunks = 0","/*! https://mths.be/wtf8 v1.0.0 by @mathias */\n;(function(root) {\n\n\t// Detect free variables `exports`\n\tvar freeExports = typeof exports == 'object' && exports;\n\n\t// Detect free variable `module`\n\tvar freeModule = typeof module == 'object' && module &&\n\t\tmodule.exports == freeExports && module;\n\n\t// Detect free variable `global`, from Node.js or Browserified code,\n\t// and use it as `root`\n\tvar freeGlobal = typeof global == 'object' && global;\n\tif (freeGlobal.global === freeGlobal || freeGlobal.window === freeGlobal) {\n\t\troot = freeGlobal;\n\t}\n\n\t/*--------------------------------------------------------------------------*/\n\n\tvar stringFromCharCode = String.fromCharCode;\n\n\t// Taken from https://mths.be/punycode\n\tfunction ucs2decode(string) {\n\t\tvar output = [];\n\t\tvar counter = 0;\n\t\tvar length = string.length;\n\t\tvar value;\n\t\tvar extra;\n\t\twhile (counter < length) {\n\t\t\tvalue = string.charCodeAt(counter++);\n\t\t\tif (value >= 0xD800 && value <= 0xDBFF && counter < length) {\n\t\t\t\t// high surrogate, and there is a next character\n\t\t\t\textra = string.charCodeAt(counter++);\n\t\t\t\tif ((extra & 0xFC00) == 0xDC00) { // low surrogate\n\t\t\t\t\toutput.push(((value & 0x3FF) << 10) + (extra & 0x3FF) + 0x10000);\n\t\t\t\t} else {\n\t\t\t\t\t// unmatched surrogate; only append this code unit, in case the next\n\t\t\t\t\t// code unit is the high surrogate of a surrogate pair\n\t\t\t\t\toutput.push(value);\n\t\t\t\t\tcounter--;\n\t\t\t\t}\n\t\t\t} else {\n\t\t\t\toutput.push(value);\n\t\t\t}\n\t\t}\n\t\treturn output;\n\t}\n\n\t// Taken from https://mths.be/punycode\n\tfunction ucs2encode(array) {\n\t\tvar length = array.length;\n\t\tvar index = -1;\n\t\tvar value;\n\t\tvar output = '';\n\t\twhile (++index < length) {\n\t\t\tvalue = array[index];\n\t\t\tif (value > 0xFFFF) {\n\t\t\t\tvalue -= 0x10000;\n\t\t\t\toutput += stringFromCharCode(value >>> 10 & 0x3FF | 0xD800);\n\t\t\t\tvalue = 0xDC00 | value & 0x3FF;\n\t\t\t}\n\t\t\toutput += stringFromCharCode(value);\n\t\t}\n\t\treturn output;\n\t}\n\n\t/*--------------------------------------------------------------------------*/\n\n\tfunction createByte(codePoint, shift) {\n\t\treturn stringFromCharCode(((codePoint >> shift) & 0x3F) | 0x80);\n\t}\n\n\tfunction encodeCodePoint(codePoint) {\n\t\tif ((codePoint & 0xFFFFFF80) == 0) { // 1-byte sequence\n\t\t\treturn stringFromCharCode(codePoint);\n\t\t}\n\t\tvar symbol = '';\n\t\tif ((codePoint & 0xFFFFF800) == 0) { // 2-byte sequence\n\t\t\tsymbol = stringFromCharCode(((codePoint >> 6) & 0x1F) | 0xC0);\n\t\t}\n\t\telse if ((codePoint & 0xFFFF0000) == 0) { // 3-byte sequence\n\t\t\tsymbol = stringFromCharCode(((codePoint >> 12) & 0x0F) | 0xE0);\n\t\t\tsymbol += createByte(codePoint, 6);\n\t\t}\n\t\telse if ((codePoint & 0xFFE00000) == 0) { // 4-byte sequence\n\t\t\tsymbol = stringFromCharCode(((codePoint >> 18) & 0x07) | 0xF0);\n\t\t\tsymbol += createByte(codePoint, 12);\n\t\t\tsymbol += createByte(codePoint, 6);\n\t\t}\n\t\tsymbol += stringFromCharCode((codePoint & 0x3F) | 0x80);\n\t\treturn symbol;\n\t}\n\n\tfunction wtf8encode(string) {\n\t\tvar codePoints = ucs2decode(string);\n\t\tvar length = codePoints.length;\n\t\tvar index = -1;\n\t\tvar codePoint;\n\t\tvar byteString = '';\n\t\twhile (++index < length) {\n\t\t\tcodePoint = codePoints[index];\n\t\t\tbyteString += encodeCodePoint(codePoint);\n\t\t}\n\t\treturn byteString;\n\t}\n\n\t/*--------------------------------------------------------------------------*/\n\n\tfunction readContinuationByte() {\n\t\tif (byteIndex >= byteCount) {\n\t\t\tthrow Error('Invalid byte index');\n\t\t}\n\n\t\tvar continuationByte = byteArray[byteIndex] & 0xFF;\n\t\tbyteIndex++;\n\n\t\tif ((continuationByte & 0xC0) == 0x80) {\n\t\t\treturn continuationByte & 0x3F;\n\t\t}\n\n\t\t// If we end up here, it’s not a continuation byte.\n\t\tthrow Error('Invalid continuation byte');\n\t}\n\n\tfunction decodeSymbol() {\n\t\tvar byte1;\n\t\tvar byte2;\n\t\tvar byte3;\n\t\tvar byte4;\n\t\tvar codePoint;\n\n\t\tif (byteIndex > byteCount) {\n\t\t\tthrow Error('Invalid byte index');\n\t\t}\n\n\t\tif (byteIndex == byteCount) {\n\t\t\treturn false;\n\t\t}\n\n\t\t// Read the first byte.\n\t\tbyte1 = byteArray[byteIndex] & 0xFF;\n\t\tbyteIndex++;\n\n\t\t// 1-byte sequence (no continuation bytes)\n\t\tif ((byte1 & 0x80) == 0) {\n\t\t\treturn byte1;\n\t\t}\n\n\t\t// 2-byte sequence\n\t\tif ((byte1 & 0xE0) == 0xC0) {\n\t\t\tvar byte2 = readContinuationByte();\n\t\t\tcodePoint = ((byte1 & 0x1F) << 6) | byte2;\n\t\t\tif (codePoint >= 0x80) {\n\t\t\t\treturn codePoint;\n\t\t\t} else {\n\t\t\t\tthrow Error('Invalid continuation byte');\n\t\t\t}\n\t\t}\n\n\t\t// 3-byte sequence (may include unpaired surrogates)\n\t\tif ((byte1 & 0xF0) == 0xE0) {\n\t\t\tbyte2 = readContinuationByte();\n\t\t\tbyte3 = readContinuationByte();\n\t\t\tcodePoint = ((byte1 & 0x0F) << 12) | (byte2 << 6) | byte3;\n\t\t\tif (codePoint >= 0x0800) {\n\t\t\t\treturn codePoint;\n\t\t\t} else {\n\t\t\t\tthrow Error('Invalid continuation byte');\n\t\t\t}\n\t\t}\n\n\t\t// 4-byte sequence\n\t\tif ((byte1 & 0xF8) == 0xF0) {\n\t\t\tbyte2 = readContinuationByte();\n\t\t\tbyte3 = readContinuationByte();\n\t\t\tbyte4 = readContinuationByte();\n\t\t\tcodePoint = ((byte1 & 0x0F) << 0x12) | (byte2 << 0x0C) |\n\t\t\t\t(byte3 << 0x06) | byte4;\n\t\t\tif (codePoint >= 0x010000 && codePoint <= 0x10FFFF) {\n\t\t\t\treturn codePoint;\n\t\t\t}\n\t\t}\n\n\t\tthrow Error('Invalid WTF-8 detected');\n\t}\n\n\tvar byteArray;\n\tvar byteCount;\n\tvar byteIndex;\n\tfunction wtf8decode(byteString) {\n\t\tbyteArray = ucs2decode(byteString);\n\t\tbyteCount = byteArray.length;\n\t\tbyteIndex = 0;\n\t\tvar codePoints = [];\n\t\tvar tmp;\n\t\twhile ((tmp = decodeSymbol()) !== false) {\n\t\t\tcodePoints.push(tmp);\n\t\t}\n\t\treturn ucs2encode(codePoints);\n\t}\n\n\t/*--------------------------------------------------------------------------*/\n\n\tvar wtf8 = {\n\t\t'version': '1.0.0',\n\t\t'encode': wtf8encode,\n\t\t'decode': wtf8decode\n\t};\n\n\t// Some AMD build optimizers, like r.js, check for specific condition patterns\n\t// like the following:\n\tif (\n\t\ttypeof define == 'function' &&\n\t\ttypeof define.amd == 'object' &&\n\t\tdefine.amd\n\t) {\n\t\tdefine(function() {\n\t\t\treturn wtf8;\n\t\t});\n\t}\telse if (freeExports && !freeExports.nodeType) {\n\t\tif (freeModule) { // in Node.js or RingoJS v0.8.0+\n\t\t\tfreeModule.exports = wtf8;\n\t\t} else { // in Narwhal or RingoJS v0.7.0-\n\t\t\tvar object = {};\n\t\t\tvar hasOwnProperty = object.hasOwnProperty;\n\t\t\tfor (var key in wtf8) {\n\t\t\t\thasOwnProperty.call(wtf8, key) && (freeExports[key] = wtf8[key]);\n\t\t\t}\n\t\t}\n\t} else { // in Rhino or a web browser\n\t\troot.wtf8 = wtf8;\n\t}\n\n}(this));\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/wtf-8/wtf-8.js\n// module id = 32\n// module chunks = 0","/*\n * base64-arraybuffer\n * https://github.com/niklasvh/base64-arraybuffer\n *\n * Copyright (c) 2012 Niklas von Hertzen\n * Licensed under the MIT license.\n */\n(function(){\n \"use strict\";\n\n var chars = \"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/\";\n\n // Use a lookup table to find the index.\n var lookup = new Uint8Array(256);\n for (var i = 0; i < chars.length; i++) {\n lookup[chars.charCodeAt(i)] = i;\n }\n\n exports.encode = function(arraybuffer) {\n var bytes = new Uint8Array(arraybuffer),\n i, len = bytes.length, base64 = \"\";\n\n for (i = 0; i < len; i+=3) {\n base64 += chars[bytes[i] >> 2];\n base64 += chars[((bytes[i] & 3) << 4) | (bytes[i + 1] >> 4)];\n base64 += chars[((bytes[i + 1] & 15) << 2) | (bytes[i + 2] >> 6)];\n base64 += chars[bytes[i + 2] & 63];\n }\n\n if ((len % 3) === 2) {\n base64 = base64.substring(0, base64.length - 1) + \"=\";\n } else if (len % 3 === 1) {\n base64 = base64.substring(0, base64.length - 2) + \"==\";\n }\n\n return base64;\n };\n\n exports.decode = function(base64) {\n var bufferLength = base64.length * 0.75,\n len = base64.length, i, p = 0,\n encoded1, encoded2, encoded3, encoded4;\n\n if (base64[base64.length - 1] === \"=\") {\n bufferLength--;\n if (base64[base64.length - 2] === \"=\") {\n bufferLength--;\n }\n }\n\n var arraybuffer = new ArrayBuffer(bufferLength),\n bytes = new Uint8Array(arraybuffer);\n\n for (i = 0; i < len; i+=4) {\n encoded1 = lookup[base64.charCodeAt(i)];\n encoded2 = lookup[base64.charCodeAt(i+1)];\n encoded3 = lookup[base64.charCodeAt(i+2)];\n encoded4 = lookup[base64.charCodeAt(i+3)];\n\n bytes[p++] = (encoded1 << 2) | (encoded2 >> 4);\n bytes[p++] = ((encoded2 & 15) << 4) | (encoded3 >> 2);\n bytes[p++] = ((encoded3 & 3) << 6) | (encoded4 & 63);\n }\n\n return arraybuffer;\n };\n})();\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/base64-arraybuffer/lib/base64-arraybuffer.js\n// module id = 33\n// module chunks = 0","/**\n * Create a blob builder even when vendor prefixes exist\n */\n\nvar BlobBuilder = global.BlobBuilder\n || global.WebKitBlobBuilder\n || global.MSBlobBuilder\n || global.MozBlobBuilder;\n\n/**\n * Check if Blob constructor is supported\n */\n\nvar blobSupported = (function() {\n try {\n var a = new Blob(['hi']);\n return a.size === 2;\n } catch(e) {\n return false;\n }\n})();\n\n/**\n * Check if Blob constructor supports ArrayBufferViews\n * Fails in Safari 6, so we need to map to ArrayBuffers there.\n */\n\nvar blobSupportsArrayBufferView = blobSupported && (function() {\n try {\n var b = new Blob([new Uint8Array([1,2])]);\n return b.size === 2;\n } catch(e) {\n return false;\n }\n})();\n\n/**\n * Check if BlobBuilder is supported\n */\n\nvar blobBuilderSupported = BlobBuilder\n && BlobBuilder.prototype.append\n && BlobBuilder.prototype.getBlob;\n\n/**\n * Helper function that maps ArrayBufferViews to ArrayBuffers\n * Used by BlobBuilder constructor and old browsers that didn't\n * support it in the Blob constructor.\n */\n\nfunction mapArrayBufferViews(ary) {\n for (var i = 0; i < ary.length; i++) {\n var chunk = ary[i];\n if (chunk.buffer instanceof ArrayBuffer) {\n var buf = chunk.buffer;\n\n // if this is a subarray, make a copy so we only\n // include the subarray region from the underlying buffer\n if (chunk.byteLength !== buf.byteLength) {\n var copy = new Uint8Array(chunk.byteLength);\n copy.set(new Uint8Array(buf, chunk.byteOffset, chunk.byteLength));\n buf = copy.buffer;\n }\n\n ary[i] = buf;\n }\n }\n}\n\nfunction BlobBuilderConstructor(ary, options) {\n options = options || {};\n\n var bb = new BlobBuilder();\n mapArrayBufferViews(ary);\n\n for (var i = 0; i < ary.length; i++) {\n bb.append(ary[i]);\n }\n\n return (options.type) ? bb.getBlob(options.type) : bb.getBlob();\n};\n\nfunction BlobConstructor(ary, options) {\n mapArrayBufferViews(ary);\n return new Blob(ary, options || {});\n};\n\nmodule.exports = (function() {\n if (blobSupported) {\n return blobSupportsArrayBufferView ? global.Blob : BlobConstructor;\n } else if (blobBuilderSupported) {\n return BlobBuilderConstructor;\n } else {\n return undefined;\n }\n})();\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/blob/index.js\n// module id = 34\n// module chunks = 0","\r\n/**\r\n * Expose `Emitter`.\r\n */\r\n\r\nif (typeof module !== 'undefined') {\r\n module.exports = Emitter;\r\n}\r\n\r\n/**\r\n * Initialize a new `Emitter`.\r\n *\r\n * @api public\r\n */\r\n\r\nfunction Emitter(obj) {\r\n if (obj) return mixin(obj);\r\n};\r\n\r\n/**\r\n * Mixin the emitter properties.\r\n *\r\n * @param {Object} obj\r\n * @return {Object}\r\n * @api private\r\n */\r\n\r\nfunction mixin(obj) {\r\n for (var key in Emitter.prototype) {\r\n obj[key] = Emitter.prototype[key];\r\n }\r\n return obj;\r\n}\r\n\r\n/**\r\n * Listen on the given `event` with `fn`.\r\n *\r\n * @param {String} event\r\n * @param {Function} fn\r\n * @return {Emitter}\r\n * @api public\r\n */\r\n\r\nEmitter.prototype.on =\r\nEmitter.prototype.addEventListener = function(event, fn){\r\n this._callbacks = this._callbacks || {};\r\n (this._callbacks['$' + event] = this._callbacks['$' + event] || [])\r\n .push(fn);\r\n return this;\r\n};\r\n\r\n/**\r\n * Adds an `event` listener that will be invoked a single\r\n * time then automatically removed.\r\n *\r\n * @param {String} event\r\n * @param {Function} fn\r\n * @return {Emitter}\r\n * @api public\r\n */\r\n\r\nEmitter.prototype.once = function(event, fn){\r\n function on() {\r\n this.off(event, on);\r\n fn.apply(this, arguments);\r\n }\r\n\r\n on.fn = fn;\r\n this.on(event, on);\r\n return this;\r\n};\r\n\r\n/**\r\n * Remove the given callback for `event` or all\r\n * registered callbacks.\r\n *\r\n * @param {String} event\r\n * @param {Function} fn\r\n * @return {Emitter}\r\n * @api public\r\n */\r\n\r\nEmitter.prototype.off =\r\nEmitter.prototype.removeListener =\r\nEmitter.prototype.removeAllListeners =\r\nEmitter.prototype.removeEventListener = function(event, fn){\r\n this._callbacks = this._callbacks || {};\r\n\r\n // all\r\n if (0 == arguments.length) {\r\n this._callbacks = {};\r\n return this;\r\n }\r\n\r\n // specific event\r\n var callbacks = this._callbacks['$' + event];\r\n if (!callbacks) return this;\r\n\r\n // remove all handlers\r\n if (1 == arguments.length) {\r\n delete this._callbacks['$' + event];\r\n return this;\r\n }\r\n\r\n // remove specific handler\r\n var cb;\r\n for (var i = 0; i < callbacks.length; i++) {\r\n cb = callbacks[i];\r\n if (cb === fn || cb.fn === fn) {\r\n callbacks.splice(i, 1);\r\n break;\r\n }\r\n }\r\n return this;\r\n};\r\n\r\n/**\r\n * Emit `event` with the given args.\r\n *\r\n * @param {String} event\r\n * @param {Mixed} ...\r\n * @return {Emitter}\r\n */\r\n\r\nEmitter.prototype.emit = function(event){\r\n this._callbacks = this._callbacks || {};\r\n var args = [].slice.call(arguments, 1)\r\n , callbacks = this._callbacks['$' + event];\r\n\r\n if (callbacks) {\r\n callbacks = callbacks.slice(0);\r\n for (var i = 0, len = callbacks.length; i < len; ++i) {\r\n callbacks[i].apply(this, args);\r\n }\r\n }\r\n\r\n return this;\r\n};\r\n\r\n/**\r\n * Return array of callbacks for `event`.\r\n *\r\n * @param {String} event\r\n * @return {Array}\r\n * @api public\r\n */\r\n\r\nEmitter.prototype.listeners = function(event){\r\n this._callbacks = this._callbacks || {};\r\n return this._callbacks['$' + event] || [];\r\n};\r\n\r\n/**\r\n * Check if this emitter has `event` handlers.\r\n *\r\n * @param {String} event\r\n * @return {Boolean}\r\n * @api public\r\n */\r\n\r\nEmitter.prototype.hasListeners = function(event){\r\n return !! this.listeners(event).length;\r\n};\r\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/component-emitter/index.js\n// module id = 35\n// module chunks = 0","/**\r\n * Compiles a querystring\r\n * Returns string representation of the object\r\n *\r\n * @param {Object}\r\n * @api private\r\n */\r\n\r\nexports.encode = function (obj) {\r\n var str = '';\r\n\r\n for (var i in obj) {\r\n if (obj.hasOwnProperty(i)) {\r\n if (str.length) str += '&';\r\n str += encodeURIComponent(i) + '=' + encodeURIComponent(obj[i]);\r\n }\r\n }\r\n\r\n return str;\r\n};\r\n\r\n/**\r\n * Parses a simple querystring into an object\r\n *\r\n * @param {String} qs\r\n * @api private\r\n */\r\n\r\nexports.decode = function(qs){\r\n var qry = {};\r\n var pairs = qs.split('&');\r\n for (var i = 0, l = pairs.length; i < l; i++) {\r\n var pair = pairs[i].split('=');\r\n qry[decodeURIComponent(pair[0])] = decodeURIComponent(pair[1]);\r\n }\r\n return qry;\r\n};\r\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/parseqs/index.js\n// module id = 36\n// module chunks = 0","\nmodule.exports = function(a, b){\n var fn = function(){};\n fn.prototype = b.prototype;\n a.prototype = new fn;\n a.prototype.constructor = a;\n};\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/component-inherit/index.js\n// module id = 37\n// module chunks = 0","'use strict';\n\nvar alphabet = '0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz-_'.split('')\n , length = 64\n , map = {}\n , seed = 0\n , i = 0\n , prev;\n\n/**\n * Return a string representing the specified number.\n *\n * @param {Number} num The number to convert.\n * @returns {String} The string representation of the number.\n * @api public\n */\nfunction encode(num) {\n var encoded = '';\n\n do {\n encoded = alphabet[num % length] + encoded;\n num = Math.floor(num / length);\n } while (num > 0);\n\n return encoded;\n}\n\n/**\n * Return the integer value specified by the given string.\n *\n * @param {String} str The string to convert.\n * @returns {Number} The integer value represented by the string.\n * @api public\n */\nfunction decode(str) {\n var decoded = 0;\n\n for (i = 0; i < str.length; i++) {\n decoded = decoded * length + map[str.charAt(i)];\n }\n\n return decoded;\n}\n\n/**\n * Yeast: A tiny growing id generator.\n *\n * @returns {String} A unique id.\n * @api public\n */\nfunction yeast() {\n var now = encode(+new Date());\n\n if (now !== prev) return seed = 0, prev = now;\n return now +'.'+ encode(seed++);\n}\n\n//\n// Map each character to its index.\n//\nfor (; i < length; i++) map[alphabet[i]] = i;\n\n//\n// Expose the `yeast`, `encode` and `decode` functions.\n//\nyeast.encode = encode;\nyeast.decode = decode;\nmodule.exports = yeast;\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/yeast/index.js\n// module id = 38\n// module chunks = 0","\n/**\n * Module requirements.\n */\n\nvar Polling = require('./polling');\nvar inherit = require('component-inherit');\n\n/**\n * Module exports.\n */\n\nmodule.exports = JSONPPolling;\n\n/**\n * Cached regular expressions.\n */\n\nvar rNewline = /\\n/g;\nvar rEscapedNewline = /\\\\n/g;\n\n/**\n * Global JSONP callbacks.\n */\n\nvar callbacks;\n\n/**\n * Noop.\n */\n\nfunction empty () { }\n\n/**\n * JSONP Polling constructor.\n *\n * @param {Object} opts.\n * @api public\n */\n\nfunction JSONPPolling (opts) {\n Polling.call(this, opts);\n\n this.query = this.query || {};\n\n // define global callbacks array if not present\n // we do this here (lazily) to avoid unneeded global pollution\n if (!callbacks) {\n // we need to consider multiple engines in the same page\n if (!global.___eio) global.___eio = [];\n callbacks = global.___eio;\n }\n\n // callback identifier\n this.index = callbacks.length;\n\n // add callback to jsonp global\n var self = this;\n callbacks.push(function (msg) {\n self.onData(msg);\n });\n\n // append to query string\n this.query.j = this.index;\n\n // prevent spurious errors from being emitted when the window is unloaded\n if (global.document && global.addEventListener) {\n global.addEventListener('beforeunload', function () {\n if (self.script) self.script.onerror = empty;\n }, false);\n }\n}\n\n/**\n * Inherits from Polling.\n */\n\ninherit(JSONPPolling, Polling);\n\n/*\n * JSONP only supports binary as base64 encoded strings\n */\n\nJSONPPolling.prototype.supportsBinary = false;\n\n/**\n * Closes the socket.\n *\n * @api private\n */\n\nJSONPPolling.prototype.doClose = function () {\n if (this.script) {\n this.script.parentNode.removeChild(this.script);\n this.script = null;\n }\n\n if (this.form) {\n this.form.parentNode.removeChild(this.form);\n this.form = null;\n this.iframe = null;\n }\n\n Polling.prototype.doClose.call(this);\n};\n\n/**\n * Starts a poll cycle.\n *\n * @api private\n */\n\nJSONPPolling.prototype.doPoll = function () {\n var self = this;\n var script = document.createElement('script');\n\n if (this.script) {\n this.script.parentNode.removeChild(this.script);\n this.script = null;\n }\n\n script.async = true;\n script.src = this.uri();\n script.onerror = function (e) {\n self.onError('jsonp poll error', e);\n };\n\n var insertAt = document.getElementsByTagName('script')[0];\n if (insertAt) {\n insertAt.parentNode.insertBefore(script, insertAt);\n } else {\n (document.head || document.body).appendChild(script);\n }\n this.script = script;\n\n var isUAgecko = 'undefined' !== typeof navigator && /gecko/i.test(navigator.userAgent);\n\n if (isUAgecko) {\n setTimeout(function () {\n var iframe = document.createElement('iframe');\n document.body.appendChild(iframe);\n document.body.removeChild(iframe);\n }, 100);\n }\n};\n\n/**\n * Writes with a hidden iframe.\n *\n * @param {String} data to send\n * @param {Function} called upon flush.\n * @api private\n */\n\nJSONPPolling.prototype.doWrite = function (data, fn) {\n var self = this;\n\n if (!this.form) {\n var form = document.createElement('form');\n var area = document.createElement('textarea');\n var id = this.iframeId = 'eio_iframe_' + this.index;\n var iframe;\n\n form.className = 'socketio';\n form.style.position = 'absolute';\n form.style.top = '-1000px';\n form.style.left = '-1000px';\n form.target = id;\n form.method = 'POST';\n form.setAttribute('accept-charset', 'utf-8');\n area.name = 'd';\n form.appendChild(area);\n document.body.appendChild(form);\n\n this.form = form;\n this.area = area;\n }\n\n this.form.action = this.uri();\n\n function complete () {\n initIframe();\n fn();\n }\n\n function initIframe () {\n if (self.iframe) {\n try {\n self.form.removeChild(self.iframe);\n } catch (e) {\n self.onError('jsonp polling iframe removal error', e);\n }\n }\n\n try {\n // ie6 dynamic iframes with target=\"\" support (thanks Chris Lambacher)\n var html = '<iframe src=\"javascript:0\" name=\"' + self.iframeId + '\">';\n iframe = document.createElement(html);\n } catch (e) {\n iframe = document.createElement('iframe');\n iframe.name = self.iframeId;\n iframe.src = 'javascript:0';\n }\n\n iframe.id = self.iframeId;\n\n self.form.appendChild(iframe);\n self.iframe = iframe;\n }\n\n initIframe();\n\n // escape \\n to prevent it from being converted into \\r\\n by some UAs\n // double escaping is required for escaped new lines because unescaping of new lines can be done safely on server-side\n data = data.replace(rEscapedNewline, '\\\\\\n');\n this.area.value = data.replace(rNewline, '\\\\n');\n\n try {\n this.form.submit();\n } catch (e) {}\n\n if (this.iframe.attachEvent) {\n this.iframe.onreadystatechange = function () {\n if (self.iframe.readyState === 'complete') {\n complete();\n }\n };\n } else {\n this.iframe.onload = complete;\n }\n};\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/engine.io-client/lib/transports/polling-jsonp.js\n// module id = 39\n// module chunks = 0","/**\n * Module dependencies.\n */\n\nvar Transport = require('../transport');\nvar parser = require('engine.io-parser');\nvar parseqs = require('parseqs');\nvar inherit = require('component-inherit');\nvar yeast = require('yeast');\nvar debug = require('debug')('engine.io-client:websocket');\nvar BrowserWebSocket = global.WebSocket || global.MozWebSocket;\nvar NodeWebSocket;\nif (typeof window === 'undefined') {\n try {\n NodeWebSocket = require('ws');\n } catch (e) { }\n}\n\n/**\n * Get either the `WebSocket` or `MozWebSocket` globals\n * in the browser or try to resolve WebSocket-compatible\n * interface exposed by `ws` for Node-like environment.\n */\n\nvar WebSocket = BrowserWebSocket;\nif (!WebSocket && typeof window === 'undefined') {\n WebSocket = NodeWebSocket;\n}\n\n/**\n * Module exports.\n */\n\nmodule.exports = WS;\n\n/**\n * WebSocket transport constructor.\n *\n * @api {Object} connection options\n * @api public\n */\n\nfunction WS (opts) {\n var forceBase64 = (opts && opts.forceBase64);\n if (forceBase64) {\n this.supportsBinary = false;\n }\n this.perMessageDeflate = opts.perMessageDeflate;\n this.usingBrowserWebSocket = BrowserWebSocket && !opts.forceNode;\n if (!this.usingBrowserWebSocket) {\n WebSocket = NodeWebSocket;\n }\n Transport.call(this, opts);\n}\n\n/**\n * Inherits from Transport.\n */\n\ninherit(WS, Transport);\n\n/**\n * Transport name.\n *\n * @api public\n */\n\nWS.prototype.name = 'websocket';\n\n/*\n * WebSockets support binary\n */\n\nWS.prototype.supportsBinary = true;\n\n/**\n * Opens socket.\n *\n * @api private\n */\n\nWS.prototype.doOpen = function () {\n if (!this.check()) {\n // let probe timeout\n return;\n }\n\n var uri = this.uri();\n var protocols = void (0);\n var opts = {\n agent: this.agent,\n perMessageDeflate: this.perMessageDeflate\n };\n\n // SSL options for Node.js client\n opts.pfx = this.pfx;\n opts.key = this.key;\n opts.passphrase = this.passphrase;\n opts.cert = this.cert;\n opts.ca = this.ca;\n opts.ciphers = this.ciphers;\n opts.rejectUnauthorized = this.rejectUnauthorized;\n if (this.extraHeaders) {\n opts.headers = this.extraHeaders;\n }\n if (this.localAddress) {\n opts.localAddress = this.localAddress;\n }\n\n try {\n this.ws = this.usingBrowserWebSocket ? new WebSocket(uri) : new WebSocket(uri, protocols, opts);\n } catch (err) {\n return this.emit('error', err);\n }\n\n if (this.ws.binaryType === undefined) {\n this.supportsBinary = false;\n }\n\n if (this.ws.supports && this.ws.supports.binary) {\n this.supportsBinary = true;\n this.ws.binaryType = 'nodebuffer';\n } else {\n this.ws.binaryType = 'arraybuffer';\n }\n\n this.addEventListeners();\n};\n\n/**\n * Adds event listeners to the socket\n *\n * @api private\n */\n\nWS.prototype.addEventListeners = function () {\n var self = this;\n\n this.ws.onopen = function () {\n self.onOpen();\n };\n this.ws.onclose = function () {\n self.onClose();\n };\n this.ws.onmessage = function (ev) {\n self.onData(ev.data);\n };\n this.ws.onerror = function (e) {\n self.onError('websocket error', e);\n };\n};\n\n/**\n * Writes data to socket.\n *\n * @param {Array} array of packets.\n * @api private\n */\n\nWS.prototype.write = function (packets) {\n var self = this;\n this.writable = false;\n\n // encodePacket efficient as it uses WS framing\n // no need for encodePayload\n var total = packets.length;\n for (var i = 0, l = total; i < l; i++) {\n (function (packet) {\n parser.encodePacket(packet, self.supportsBinary, function (data) {\n if (!self.usingBrowserWebSocket) {\n // always create a new object (GH-437)\n var opts = {};\n if (packet.options) {\n opts.compress = packet.options.compress;\n }\n\n if (self.perMessageDeflate) {\n var len = 'string' === typeof data ? global.Buffer.byteLength(data) : data.length;\n if (len < self.perMessageDeflate.threshold) {\n opts.compress = false;\n }\n }\n }\n\n // Sometimes the websocket has already been closed but the browser didn't\n // have a chance of informing us about it yet, in that case send will\n // throw an error\n try {\n if (self.usingBrowserWebSocket) {\n // TypeError is thrown when passing the second argument on Safari\n self.ws.send(data);\n } else {\n self.ws.send(data, opts);\n }\n } catch (e) {\n debug('websocket closed before onclose event');\n }\n\n --total || done();\n });\n })(packets[i]);\n }\n\n function done () {\n self.emit('flush');\n\n // fake drain\n // defer to next tick to allow Socket to clear writeBuffer\n setTimeout(function () {\n self.writable = true;\n self.emit('drain');\n }, 0);\n }\n};\n\n/**\n * Called upon close\n *\n * @api private\n */\n\nWS.prototype.onClose = function () {\n Transport.prototype.onClose.call(this);\n};\n\n/**\n * Closes socket.\n *\n * @api private\n */\n\nWS.prototype.doClose = function () {\n if (typeof this.ws !== 'undefined') {\n this.ws.close();\n }\n};\n\n/**\n * Generates uri for connection.\n *\n * @api private\n */\n\nWS.prototype.uri = function () {\n var query = this.query || {};\n var schema = this.secure ? 'wss' : 'ws';\n var port = '';\n\n // avoid port if default for schema\n if (this.port && (('wss' === schema && Number(this.port) !== 443) ||\n ('ws' === schema && Number(this.port) !== 80))) {\n port = ':' + this.port;\n }\n\n // append timestamp to URI\n if (this.timestampRequests) {\n query[this.timestampParam] = yeast();\n }\n\n // communicate binary support capabilities\n if (!this.supportsBinary) {\n query.b64 = 1;\n }\n\n query = parseqs.encode(query);\n\n // prepend ? to query\n if (query.length) {\n query = '?' + query;\n }\n\n var ipv6 = this.hostname.indexOf(':') !== -1;\n return schema + '://' + (ipv6 ? '[' + this.hostname + ']' : this.hostname) + port + this.path + query;\n};\n\n/**\n * Feature detection for WebSocket.\n *\n * @return {Boolean} whether this transport is available.\n * @api public\n */\n\nWS.prototype.check = function () {\n return !!WebSocket && !('__initialize' in WebSocket && this.name === WS.prototype.name);\n};\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/engine.io-client/lib/transports/websocket.js\n// module id = 40\n// module chunks = 0","/* (ignored) */\n\n\n//////////////////\n// WEBPACK FOOTER\n// ws (ignored)\n// module id = 41\n// module chunks = 0","\nvar indexOf = [].indexOf;\n\nmodule.exports = function(arr, obj){\n if (indexOf) return arr.indexOf(obj);\n for (var i = 0; i < arr.length; ++i) {\n if (arr[i] === obj) return i;\n }\n return -1;\n};\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/indexof/index.js\n// module id = 42\n// module chunks = 0","/**\r\n * JSON parse.\r\n *\r\n * @see Based on jQuery#parseJSON (MIT) and JSON2\r\n * @api private\r\n */\r\n\r\nvar rvalidchars = /^[\\],:{}\\s]*$/;\r\nvar rvalidescape = /\\\\(?:[\"\\\\\\/bfnrt]|u[0-9a-fA-F]{4})/g;\r\nvar rvalidtokens = /\"[^\"\\\\\\n\\r]*\"|true|false|null|-?\\d+(?:\\.\\d*)?(?:[eE][+\\-]?\\d+)?/g;\r\nvar rvalidbraces = /(?:^|:|,)(?:\\s*\\[)+/g;\r\nvar rtrimLeft = /^\\s+/;\r\nvar rtrimRight = /\\s+$/;\r\n\r\nmodule.exports = function parsejson(data) {\r\n if ('string' != typeof data || !data) {\r\n return null;\r\n }\r\n\r\n data = data.replace(rtrimLeft, '').replace(rtrimRight, '');\r\n\r\n // Attempt to parse using the native JSON parser first\r\n if (global.JSON && JSON.parse) {\r\n return JSON.parse(data);\r\n }\r\n\r\n if (rvalidchars.test(data.replace(rvalidescape, '@')\r\n .replace(rvalidtokens, ']')\r\n .replace(rvalidbraces, ''))) {\r\n return (new Function('return ' + data))();\r\n }\r\n};\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/parsejson/index.js\n// module id = 43\n// module chunks = 0","\n/**\n * Module dependencies.\n */\n\nvar parser = require('socket.io-parser');\nvar Emitter = require('component-emitter');\nvar toArray = require('to-array');\nvar on = require('./on');\nvar bind = require('component-bind');\nvar debug = require('debug')('socket.io-client:socket');\nvar hasBin = require('has-binary');\n\n/**\n * Module exports.\n */\n\nmodule.exports = exports = Socket;\n\n/**\n * Internal events (blacklisted).\n * These events can't be emitted by the user.\n *\n * @api private\n */\n\nvar events = {\n connect: 1,\n connect_error: 1,\n connect_timeout: 1,\n connecting: 1,\n disconnect: 1,\n error: 1,\n reconnect: 1,\n reconnect_attempt: 1,\n reconnect_failed: 1,\n reconnect_error: 1,\n reconnecting: 1,\n ping: 1,\n pong: 1\n};\n\n/**\n * Shortcut to `Emitter#emit`.\n */\n\nvar emit = Emitter.prototype.emit;\n\n/**\n * `Socket` constructor.\n *\n * @api public\n */\n\nfunction Socket (io, nsp, opts) {\n this.io = io;\n this.nsp = nsp;\n this.json = this; // compat\n this.ids = 0;\n this.acks = {};\n this.receiveBuffer = [];\n this.sendBuffer = [];\n this.connected = false;\n this.disconnected = true;\n if (opts && opts.query) {\n this.query = opts.query;\n }\n if (this.io.autoConnect) this.open();\n}\n\n/**\n * Mix in `Emitter`.\n */\n\nEmitter(Socket.prototype);\n\n/**\n * Subscribe to open, close and packet events\n *\n * @api private\n */\n\nSocket.prototype.subEvents = function () {\n if (this.subs) return;\n\n var io = this.io;\n this.subs = [\n on(io, 'open', bind(this, 'onopen')),\n on(io, 'packet', bind(this, 'onpacket')),\n on(io, 'close', bind(this, 'onclose'))\n ];\n};\n\n/**\n * \"Opens\" the socket.\n *\n * @api public\n */\n\nSocket.prototype.open =\nSocket.prototype.connect = function () {\n if (this.connected) return this;\n\n this.subEvents();\n this.io.open(); // ensure open\n if ('open' === this.io.readyState) this.onopen();\n this.emit('connecting');\n return this;\n};\n\n/**\n * Sends a `message` event.\n *\n * @return {Socket} self\n * @api public\n */\n\nSocket.prototype.send = function () {\n var args = toArray(arguments);\n args.unshift('message');\n this.emit.apply(this, args);\n return this;\n};\n\n/**\n * Override `emit`.\n * If the event is in `events`, it's emitted normally.\n *\n * @param {String} event name\n * @return {Socket} self\n * @api public\n */\n\nSocket.prototype.emit = function (ev) {\n if (events.hasOwnProperty(ev)) {\n emit.apply(this, arguments);\n return this;\n }\n\n var args = toArray(arguments);\n var parserType = parser.EVENT; // default\n if (hasBin(args)) { parserType = parser.BINARY_EVENT; } // binary\n var packet = { type: parserType, data: args };\n\n packet.options = {};\n packet.options.compress = !this.flags || false !== this.flags.compress;\n\n // event ack callback\n if ('function' === typeof args[args.length - 1]) {\n debug('emitting packet with ack id %d', this.ids);\n this.acks[this.ids] = args.pop();\n packet.id = this.ids++;\n }\n\n if (this.connected) {\n this.packet(packet);\n } else {\n this.sendBuffer.push(packet);\n }\n\n delete this.flags;\n\n return this;\n};\n\n/**\n * Sends a packet.\n *\n * @param {Object} packet\n * @api private\n */\n\nSocket.prototype.packet = function (packet) {\n packet.nsp = this.nsp;\n this.io.packet(packet);\n};\n\n/**\n * Called upon engine `open`.\n *\n * @api private\n */\n\nSocket.prototype.onopen = function () {\n debug('transport is open - connecting');\n\n // write connect packet if necessary\n if ('/' !== this.nsp) {\n if (this.query) {\n this.packet({type: parser.CONNECT, query: this.query});\n } else {\n this.packet({type: parser.CONNECT});\n }\n }\n};\n\n/**\n * Called upon engine `close`.\n *\n * @param {String} reason\n * @api private\n */\n\nSocket.prototype.onclose = function (reason) {\n debug('close (%s)', reason);\n this.connected = false;\n this.disconnected = true;\n delete this.id;\n this.emit('disconnect', reason);\n};\n\n/**\n * Called with socket packet.\n *\n * @param {Object} packet\n * @api private\n */\n\nSocket.prototype.onpacket = function (packet) {\n if (packet.nsp !== this.nsp) return;\n\n switch (packet.type) {\n case parser.CONNECT:\n this.onconnect();\n break;\n\n case parser.EVENT:\n this.onevent(packet);\n break;\n\n case parser.BINARY_EVENT:\n this.onevent(packet);\n break;\n\n case parser.ACK:\n this.onack(packet);\n break;\n\n case parser.BINARY_ACK:\n this.onack(packet);\n break;\n\n case parser.DISCONNECT:\n this.ondisconnect();\n break;\n\n case parser.ERROR:\n this.emit('error', packet.data);\n break;\n }\n};\n\n/**\n * Called upon a server event.\n *\n * @param {Object} packet\n * @api private\n */\n\nSocket.prototype.onevent = function (packet) {\n var args = packet.data || [];\n debug('emitting event %j', args);\n\n if (null != packet.id) {\n debug('attaching ack callback to event');\n args.push(this.ack(packet.id));\n }\n\n if (this.connected) {\n emit.apply(this, args);\n } else {\n this.receiveBuffer.push(args);\n }\n};\n\n/**\n * Produces an ack callback to emit with an event.\n *\n * @api private\n */\n\nSocket.prototype.ack = function (id) {\n var self = this;\n var sent = false;\n return function () {\n // prevent double callbacks\n if (sent) return;\n sent = true;\n var args = toArray(arguments);\n debug('sending ack %j', args);\n\n var type = hasBin(args) ? parser.BINARY_ACK : parser.ACK;\n self.packet({\n type: type,\n id: id,\n data: args\n });\n };\n};\n\n/**\n * Called upon a server acknowlegement.\n *\n * @param {Object} packet\n * @api private\n */\n\nSocket.prototype.onack = function (packet) {\n var ack = this.acks[packet.id];\n if ('function' === typeof ack) {\n debug('calling ack %s with %j', packet.id, packet.data);\n ack.apply(this, packet.data);\n delete this.acks[packet.id];\n } else {\n debug('bad ack %s', packet.id);\n }\n};\n\n/**\n * Called upon server connect.\n *\n * @api private\n */\n\nSocket.prototype.onconnect = function () {\n this.connected = true;\n this.disconnected = false;\n this.emit('connect');\n this.emitBuffered();\n};\n\n/**\n * Emit buffered events (received and emitted).\n *\n * @api private\n */\n\nSocket.prototype.emitBuffered = function () {\n var i;\n for (i = 0; i < this.receiveBuffer.length; i++) {\n emit.apply(this, this.receiveBuffer[i]);\n }\n this.receiveBuffer = [];\n\n for (i = 0; i < this.sendBuffer.length; i++) {\n this.packet(this.sendBuffer[i]);\n }\n this.sendBuffer = [];\n};\n\n/**\n * Called upon server disconnect.\n *\n * @api private\n */\n\nSocket.prototype.ondisconnect = function () {\n debug('server disconnect (%s)', this.nsp);\n this.destroy();\n this.onclose('io server disconnect');\n};\n\n/**\n * Called upon forced client/server side disconnections,\n * this method ensures the manager stops tracking us and\n * that reconnections don't get triggered for this.\n *\n * @api private.\n */\n\nSocket.prototype.destroy = function () {\n if (this.subs) {\n // clean subscriptions to avoid reconnections\n for (var i = 0; i < this.subs.length; i++) {\n this.subs[i].destroy();\n }\n this.subs = null;\n }\n\n this.io.destroy(this);\n};\n\n/**\n * Disconnects the socket manually.\n *\n * @return {Socket} self\n * @api public\n */\n\nSocket.prototype.close =\nSocket.prototype.disconnect = function () {\n if (this.connected) {\n debug('performing disconnect (%s)', this.nsp);\n this.packet({ type: parser.DISCONNECT });\n }\n\n // remove socket from pool\n this.destroy();\n\n if (this.connected) {\n // fire events\n this.onclose('io client disconnect');\n }\n return this;\n};\n\n/**\n * Sets the compress flag.\n *\n * @param {Boolean} if `true`, compresses the sending data\n * @return {Socket} self\n * @api public\n */\n\nSocket.prototype.compress = function (compress) {\n this.flags = this.flags || {};\n this.flags.compress = compress;\n return this;\n};\n\n\n\n// WEBPACK FOOTER //\n// lib/socket.js","module.exports = toArray\n\nfunction toArray(list, index) {\n var array = []\n\n index = index || 0\n\n for (var i = index || 0; i < list.length; i++) {\n array[i - index] = list[i]\n }\n\n return array\n}\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/to-array/index.js\n// module id = 45\n// module chunks = 0","\n/**\n * Module exports.\n */\n\nmodule.exports = on;\n\n/**\n * Helper for subscriptions.\n *\n * @param {Object|EventEmitter} obj with `Emitter` mixin or `EventEmitter`\n * @param {String} event name\n * @param {Function} callback\n * @api public\n */\n\nfunction on (obj, ev, fn) {\n obj.on(ev, fn);\n return {\n destroy: function () {\n obj.removeListener(ev, fn);\n }\n };\n}\n\n\n\n// WEBPACK FOOTER //\n// lib/on.js","/**\n * Slice reference.\n */\n\nvar slice = [].slice;\n\n/**\n * Bind `obj` to `fn`.\n *\n * @param {Object} obj\n * @param {Function|String} fn or string\n * @return {Function}\n * @api public\n */\n\nmodule.exports = function(obj, fn){\n if ('string' == typeof fn) fn = obj[fn];\n if ('function' != typeof fn) throw new Error('bind() requires a function');\n var args = slice.call(arguments, 2);\n return function(){\n return fn.apply(obj, args.concat(slice.call(arguments)));\n }\n};\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/component-bind/index.js\n// module id = 47\n// module chunks = 0","\n/**\n * Expose `Backoff`.\n */\n\nmodule.exports = Backoff;\n\n/**\n * Initialize backoff timer with `opts`.\n *\n * - `min` initial timeout in milliseconds [100]\n * - `max` max timeout [10000]\n * - `jitter` [0]\n * - `factor` [2]\n *\n * @param {Object} opts\n * @api public\n */\n\nfunction Backoff(opts) {\n opts = opts || {};\n this.ms = opts.min || 100;\n this.max = opts.max || 10000;\n this.factor = opts.factor || 2;\n this.jitter = opts.jitter > 0 && opts.jitter <= 1 ? opts.jitter : 0;\n this.attempts = 0;\n}\n\n/**\n * Return the backoff duration.\n *\n * @return {Number}\n * @api public\n */\n\nBackoff.prototype.duration = function(){\n var ms = this.ms * Math.pow(this.factor, this.attempts++);\n if (this.jitter) {\n var rand = Math.random();\n var deviation = Math.floor(rand * this.jitter * ms);\n ms = (Math.floor(rand * 10) & 1) == 0 ? ms - deviation : ms + deviation;\n }\n return Math.min(ms, this.max) | 0;\n};\n\n/**\n * Reset the number of attempts.\n *\n * @api public\n */\n\nBackoff.prototype.reset = function(){\n this.attempts = 0;\n};\n\n/**\n * Set the minimum duration\n *\n * @api public\n */\n\nBackoff.prototype.setMin = function(min){\n this.ms = min;\n};\n\n/**\n * Set the maximum duration\n *\n * @api public\n */\n\nBackoff.prototype.setMax = function(max){\n this.max = max;\n};\n\n/**\n * Set the jitter\n *\n * @api public\n */\n\nBackoff.prototype.setJitter = function(jitter){\n this.jitter = jitter;\n};\n\n\n\n\n//////////////////\n// WEBPACK FOOTER\n// ./~/backo2/index.js\n// module id = 48\n// module chunks = 0","/* global io, Terminal, Blob */\nvar sessionLogEnable = false\nvar sessionLog, sessionFooter, logDate, currentDate, myFile, errorExists\n\n// replay password to server, requires\nfunction replayCredentials () { // eslint-disable-line\n socket.emit('control', 'replayCredentials')\n console.log('replaying credentials')\n return false\n}\n\n// Set variable to toggle log data from client/server to a varialble\n// for later download\nfunction toggleLog () { // eslint-disable-line\n if (sessionLogEnable === true) {\n sessionLogEnable = false\n document.getElementById('toggleLog').innerHTML =\n '<a class=\"toggleLog\" href=\"javascript:void(0);\" onclick=\"toggleLog();\">Start Log</a>'\n console.log('stopping log, ' + sessionLogEnable)\n currentDate = new Date()\n sessionLog = sessionLog + '\\r\\n\\r\\nLog End for ' + sessionFooter + ': ' +\n currentDate.getFullYear() + '/' + (currentDate.getMonth() + 1) + '/' +\n currentDate.getDate() + ' @ ' + currentDate.getHours() + ':' +\n currentDate.getMinutes() + ':' + currentDate.getSeconds() + '\\r\\n'\n logDate = currentDate\n return false\n } else {\n sessionLogEnable = true\n document.getElementById('toggleLog').innerHTML =\n '<a class=\"toggleLog\" href=\"javascript:void(0)\" onclick=\"toggleLog();\">Logging - STOP LOG</a>'\n document.getElementById('downloadLog').style.display = 'inline'\n console.log('starting log, ' + sessionLogEnable)\n currentDate = new Date()\n sessionLog = 'Log Start for ' + sessionFooter + ': ' +\n currentDate.getFullYear() + '/' + (currentDate.getMonth() + 1) + '/' +\n currentDate.getDate() + ' @ ' + currentDate.getHours() + ':' +\n currentDate.getMinutes() + ':' + currentDate.getSeconds() + '\\r\\n\\r\\n'\n logDate = currentDate\n return false\n }\n}\n\n// cross browser method to \"download\" an element to the local system\n// used for our client-side logging feature\nfunction downloadLog () { // eslint-disable-line\n myFile = 'WebSSH2-' + logDate.getFullYear() + (logDate.getMonth() + 1) +\n logDate.getDate() + '_' + logDate.getHours() + logDate.getMinutes() +\n logDate.getSeconds() + '.log'\n // regex should eliminate escape sequences from being logged.\n var blob = new Blob([sessionLog.replace(/[\\u001b\\u009b][[()#;?]*(?:[0-9]{1,4}(?:;[0-9]{0,4})*)?[0-9A-ORZcf-nqry=><]/g, '')], {\n type: 'text/plain'\n })\n if (window.navigator.msSaveOrOpenBlob) {\n window.navigator.msSaveBlob(blob, myFile)\n } else {\n var elem = window.document.createElement('a')\n elem.href = window.URL.createObjectURL(blob)\n elem.download = myFile\n document.body.appendChild(elem)\n elem.click()\n document.body.removeChild(elem)\n }\n}\n\ndocument.getElementById('downloadLog').style.display = 'none'\ndocument.getElementById('credentials').style.display = 'none'\n\nvar terminalContainer = document.getElementById('terminal-container')\nvar term = new Terminal({\n cursorBlink: true\n})\nvar socket, termid // eslint-disable-line\nterm.open(terminalContainer, {\n focus: true\n})\nterm.fit()\n\nif (document.location.pathname) {\n var parts = document.location.pathname.split('/')\n var base = parts.slice(0, parts.length - 1).join('/') + '/'\n var resource = base.substring(1) + 'socket.io'\n socket = io.connect(null, {\n resource: resource\n })\n} else {\n socket = io.connect()\n}\n\nsocket.on('connect', function () {\n socket.emit('geometry', term.cols, term.rows)\n term.on('data', function (data) {\n socket.emit('data', data)\n })\n socket.on('title', function (data) {\n document.title = data\n }).on('status', function (data) {\n document.getElementById('status').innerHTML = data\n }).on('ssherror', function (data) {\n document.getElementById('status').innerHTML = data\n document.getElementById('status').style.backgroundColor = 'red'\n errorExists = true\n }).on('headerBackground', function (data) {\n document.getElementById('header').style.backgroundColor = data\n }).on('header', function (data) {\n document.getElementById('header').innerHTML = data\n }).on('footer', function (data) {\n sessionFooter = data\n document.getElementById('footer').innerHTML = data\n }).on('statusBackground', function (data) {\n document.getElementById('status').style.backgroundColor = data\n }).on('allowreplay', function (data) {\n if (data === true) {\n console.log('allowreplay: ' + data)\n document.getElementById('credentials').style.display = 'inline'\n } else {\n document.getElementById('credentials').style.display = 'none'\n }\n }).on('data', function (data) {\n term.write(data)\n if (sessionLogEnable) {\n sessionLog = sessionLog + data\n }\n }).on('disconnect', function (err) {\n if (!errorExists) {\n document.getElementById('status').style.backgroundColor = 'red'\n document.getElementById('status').innerHTML =\n 'WEBSOCKET SERVER DISCONNECTED: ' + err\n }\n socket.io.reconnection(false)\n }).on('error', function (err) {\n if (!errorExists) {\n document.getElementById('status').style.backgroundColor = 'red'\n document.getElementById('status').innerHTML = 'ERROR: ' + err\n }\n })\n})\n"]} |