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80 lines
1.4 KiB
JavaScript
80 lines
1.4 KiB
JavaScript
"use strict";
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var uglifyjs = require('uglify-js'),
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less = require('less'),
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async = require('async'),
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fs = require('fs'),
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path = require('path'),
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crypto = require('crypto'),
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Minifier = {
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js: {}
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};
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/* Javascript */
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Minifier.js.minify = function (scripts, minify, callback) {
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scripts = scripts.filter(function(file) {
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return fs.existsSync(file);
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});
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if (minify) {
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minifyScripts(scripts, function() {
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callback.apply(this, arguments);
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});
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} else {
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concatenateScripts(scripts, callback);
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}
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};
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process.on('message', function(payload) {
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switch(payload.action) {
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case 'js':
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Minifier.js.minify(payload.scripts, payload.minify, function(minified) {
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process.send({
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type: 'end',
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minified: minified
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});
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});
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break;
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}
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});
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function minifyScripts(scripts, callback) {
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try {
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var minified = uglifyjs.minify(scripts, {
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compress: false
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}),
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hasher = crypto.createHash('md5'),
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hash;
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// Calculate js hash
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hasher.update(minified.code, 'utf-8');
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hash = hasher.digest('hex');
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process.send({
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type: 'hash',
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payload: hash.slice(0, 8)
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});
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callback(minified.code);
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} catch(err) {
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process.send({
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type: 'error',
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payload: err.message
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});
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}
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}
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function concatenateScripts(scripts, callback) {
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async.map(scripts, fs.readFile, function(err, scripts) {
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if (err) {
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process.send({
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type: 'error',
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payload: err
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});
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}
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scripts = scripts.join(require('os').EOL + ';');
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callback(scripts);
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});
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} |