wingbase/server/web/minify.js
2016-04-02 18:35:49 +01:00

64 lines
1.6 KiB
JavaScript

'use strict';
const colors = require('colors');
const fs = require('fs');
const path = require('path');
const recursive = require('recursive-readdir');
const traceur = require('traceur');
const uglify = require('uglify-js');
function minifyJs(callback) {
callback = callback || function() {};
var dir = path.join(__dirname, '../../public/static/js/wingbase');
var cache = '';
var scripts = [];
var getPriority = (file) => {
if (file.slice(0, 3) == '//@') {
let a = +file.split('\n')[0].slice(3);
return a;
} else return 0;
}
recursive(dir, function(err, files) {
for(var file of files) {
let code = fs.readFileSync(file, 'utf8').toString();
scripts.push(code);
}
scripts.sort((a, b) => getPriority(b) - getPriority(a));
scripts = scripts.map(s => s.replace(/(\/\/@\d+\n)/, ''));
let comment = '';
cache = scripts.join('');
if (!wingbase.args.development)
cache = traceur.compile(cache);
if (wingbase.args.development) {
callback(cache);
return;
}
try {
cache = uglify.minify(cache, { fromString: true }).code;
comment = '/* This is a minified file. ';
comment += 'If you would like to view the source in a more readable format, ';
comment += 'please contact the developer.*/\n'
} catch(err) {
console.log('Error parsing wingbase.min.js file'.red);
comment = '/* This file could not be minified because of JS syntax errors.';
comment += ' If you encounter errors when running Starbugs, please contact';
comment += ' a developer.*/\n'
}
callback(comment + cache);
});
}
module.exports = minifyJs;