#1328 - first pass

minifier.js

@@ -0,0 +1,58 @@
+var uglifyjs = require('uglify-js'),
+	less = require('less'),
+	async = require('async'),
+	fs = require('fs'),
+
+	Minifier = {
+		js: {},
+		css: {}
+	};
+
+/* Javascript */
+Minifier.js.minify = function (scripts, callback) {
+	// winston.info('[meta/js] Minifying client-side libraries...');
+	var minified = uglifyjs.minify(scripts);
+
+	callback(minified.code);
+
+	// winston.info('[meta/js] Done.');
+};
+
+Minifier.js.concatenate = function(scripts, callback) {
+	// winston.info('[meta/js] Concatenating client-side libraries into one file...');
+
+	async.map(scripts, function(path, next) {
+		fs.readFile(path, { encoding: 'utf-8' }, next);
+	}, function(err, contents) {
+		if (err) {
+			// winston.error('[meta/js] Could not minify javascript! Error: ' + err.message);
+			console.log('ERROR');
+			process.exit();
+		}
+
+		callback(contents.reduce(function(output, src) {
+			return output.length ? output + ';\n' + src : src;
+		}, ''));
+
+		// winston.info('[meta/js] Done.');
+	});
+};
+
+process.on('message', function(payload) {
+	var	executeCallback = function(data) {
+			process.send({
+				action: payload.action,
+				data: data
+			});
+		};
+
+	switch(payload.action) {
+		case 'js.minify':
+			Minifier.js.minify(payload.scripts, executeCallback);
+		break;
+
+		case 'js.concatenate':
+			Minifier.js.concatenate(payload.scripts, executeCallback);
+		break;
+	}
+})

src/meta.js

@@ -292,35 +292,6 @@ var fs = require('fs'),
 				Meta.js.prepared = true;
 				callback();
 			});
-		},
-		minify: function () {
-			var uglifyjs = require('uglify-js'),
-				minified;
-
-			winston.info('[meta/js] Minifying client-side libraries...');
-
-			minified = uglifyjs.minify(this.scripts);
-			this.cache = minified.code;
-
-			winston.info('[meta/js] Done.');
-		},
-		concatenate: function() {
-			winston.info('[meta/js] Concatenating client-side libraries into one file...');
-
-			async.map(this.scripts, function(path, next) {
-				fs.readFile(path, { encoding: 'utf-8' }, next);
-			}, function(err, contents) {
-				if (err) {
-					winston.error('[meta/js] Could not minify javascript! Error: ' + err.message);
-					process.exit();
-				}
-
-				Meta.js.cache = contents.reduce(function(output, src) {
-					return output.length ? output + ';\n' + src : src;
-				}, '');
-
-				winston.info('[meta/js] Done.');
-			});
 		}
 	};
 

src/webserver.js

@@ -7,6 +7,7 @@ var path = require('path'),
 	server,
 	winston = require('winston'),
 	async = require('async'),
+	fork = require('child_process').fork,
 
 	emailer = require('./emailer'),
 	db = require('./database'),
@@ -91,14 +92,25 @@ if(nconf.get('ssl')) {
 
 	plugins.ready(function() {
 		// Prepare js for minification/concatenation
-		meta.js.prepare(function() {
-			if (app.enabled('minification')) {
-				meta.js.minify();
-			} else {
-				meta.js.concatenate();
+		var	minifier = fork('minifier.js');
+
+		minifier.on('message', function(payload) {
+			switch(payload.action) {
+				case 'js.minify':	// Intentional fall-through
+				case 'js.concatenate':
+					winston.info('[meta/js] Compilation complete');
+					meta.js.cache = payload.data;
+				break;
 			}
 		});
 
+		meta.js.prepare(function() {
+			minifier.send({
+				action: app.enabled('minification') ? 'js.minify' : 'js.concatenate',
+				scripts: meta.js.scripts
+			});
+		});
+
 		// Minify CSS
 		meta.css.minify();
 	});