Add script for building "tileserver-gl-light" package (#27)

.gitignore

@@ -1,3 +1,5 @@
 node_modules
 test_data
+data
+light
 config.json

deploy-light.js

@@ -0,0 +1,27 @@
+#!/usr/bin/env node
+
+'use strict';
+
+// SYNC THE `light` FOLDER
+require('child_process').execSync('rsync -av --exclude="light" --exclude=".git" --exclude="node_modules" --delete . light', {
+  stdio: 'inherit'
+});
+
+// PATCH `package.json`
+var fs = require('fs');
+var packageJson = require('./package');
+
+packageJson.name += '-light';
+delete packageJson.dependencies['canvas'];
+delete packageJson.dependencies['mapbox-gl-native'];
+delete packageJson.dependencies['sharp'];
+
+delete packageJson.devDependencies;
+
+var str = JSON.stringify(packageJson, undefined, 2);
+fs.writeFileSync('light/package.json', str);
+
+// PUBLISH
+require('child_process').execSync('npm publish light', {
+  stdio: 'inherit'
+});

src/server.js

@@ -17,11 +17,16 @@ var base64url = require('base64url'),
 
 var packageJson = require('../package'),
     serve_font = require('./serve_font'),
-    serve_rendered = require('./serve_rendered'),
+    serve_rendered = null,
     serve_style = require('./serve_style'),
     serve_data = require('./serve_data'),
     utils = require('./utils');
 
+if (packageJson.name.slice(-6) !== '-light') {
+  // do not require `serve_rendered` in the light package
+  serve_rendered = require('./serve_rendered');
+}
+
 module.exports = function(opts, callback) {
   console.log('Starting TileServer-GL v' + packageJson.version);
 
@@ -100,8 +105,12 @@ module.exports = function(opts, callback) {
         }));
     }
     if (item.serve_rendered !== false) {
-      app.use('/styles/' + id + '/',
-              serve_rendered(options, serving.rendered, item, id));
+      if (serve_rendered) {
+        app.use('/styles/' + id + '/',
+                serve_rendered(options, serving.rendered, item, id));
+      } else {
+        item.serve_rendered = false;
+      }
     }
   });