optimising build step for #5211

build.js

@@ -3,7 +3,11 @@
 var async = require('async');
 var winston = require('winston');
 
+var buildStart;
+
 exports.build = function build(targets, callback) {
+	buildStart = Date.now();
+
 	var db = require('./src/database');
 	var meta = require('./src/meta');
 	var plugins = require('./src/plugins');
@@ -21,7 +25,7 @@ exports.build = function build(targets, callback) {
 	async.series([
 		async.apply(db.init),
 		async.apply(meta.themes.setupPaths),
-		async.apply(plugins.init, null, null)
+		async.apply(plugins.prepareForBuild)
 	], function (err) {
 		if (err) {
 			winston.error('[build] Encountered error preparing for build: ' + err.message);
@@ -80,7 +84,9 @@ exports.buildTargets = function (targets, callback) {
 			return process.exit(1);
 		}
 
-		winston.info('[build] Asset compilation successful.');
+		var time = (Date.now() - buildStart) / 1000;
+
+		winston.info('[build] Asset compilation successful. Completed in ' + time + 's.');
 
 		if (typeof callback === 'function') {
 			callback();

src/plugins.js

@@ -99,23 +99,9 @@ var middleware;
 					next();
 				});
 			},
-			function (next) {
-				db.getSortedSetRange('plugins:active', 0, -1, next);
-			},
-			function (plugins, next) {
-				if (!Array.isArray(plugins)) {
-					return next();
-				}
-
-				plugins = plugins.filter(function (plugin) {
-					return plugin && typeof plugin === 'string';
-				}).map(function (plugin) {
-					return path.join(__dirname, '../node_modules/', plugin);
-				});
-
-				async.filter(plugins, file.exists, function (plugins) {
-					async.eachSeries(plugins, Plugins.loadPlugin, next);
-				});
+			async.apply(Plugins.getPluginPaths),
+			function(paths, next) {
+				async.eachSeries(paths, Plugins.loadPlugin, next);
 			},
 			function (next) {
 				// If some plugins are incompatible, throw the warning here

src/plugins/load.js

@@ -1,5 +1,6 @@
 'use strict';
 
+var db = require('../database');
 var fs = require('fs');
 var path = require('path');
 var semver = require('semver');
@@ -14,6 +15,49 @@ var meta = require('../meta');
 
 
 module.exports = function (Plugins) {
+	Plugins.getPluginPaths = function (callback) {
+		async.waterfall([
+			function (next) {
+				db.getSortedSetRange('plugins:active', 0, -1, next);
+			},
+			function (plugins, next) {
+				if (!Array.isArray(plugins)) {
+					return next();
+				}
+
+				plugins = plugins.filter(function (plugin) {
+					return plugin && typeof plugin === 'string';
+				}).map(function (plugin) {
+					return path.join(__dirname, '../../node_modules/', plugin);
+				});
+
+				async.filter(plugins, file.exists, function (plugins) {
+					next(null, plugins);
+				});
+			},
+		], callback);
+	};
+
+	Plugins.prepareForBuild = function (callback) {
+		async.waterfall([
+			async.apply(Plugins.getPluginPaths),
+			function(paths, next) {
+				async.map(paths, function(path, next) {
+					Plugins.loadPluginInfo(path, next);
+				}, next);
+			},
+			function(plugins, next) {
+				async.each(plugins, function(pluginData, next) {
+					var idx = plugins.indexOf(pluginData);
+					async.parallel([
+						async.apply(mapFiles, pluginData, 'css', 'cssFiles'),
+						async.apply(mapFiles, pluginData, 'less', 'lessFiles'),
+						async.apply(mapClientSideScripts, pluginData)
+					], next);
+				}, next);
+			}
+		], callback);
+	};
 
 	Plugins.loadPlugin = function (pluginPath, callback) {
 		Plugins.loadPluginInfo(pluginPath, function (err, pluginData) {