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index.js
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index.js
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'use strict';
var uglifyJS;
var globby = require("globby")
var path = require('path');
var extend = require('extend');
var fs = require('fs');
var mkdirp = require('mkdirp');
var defaultOptions = {
comments: true,
output: '',
each: false,
extension: '.min.js',
es6: false,
patterns: ['**/*.js'],
configFile: null
};
module.exports = function (dirPath, options) {
options = extend({}, defaultOptions, options);
if (options.es6) {
uglifyJS = require('uglify-es');
} else {
uglifyJS = require('uglify-js');
}
var uglifyConfiguration = options.configFile ? require(path.resolve(options.configFile)) : {};
// grab and minify all the js files
var files = globby.sync(options.patterns, {
cwd: dirPath
});
if (options.each) {
// minify each file individually
files.forEach(function (fileName) {
options.output = isEmpty(options.output) ? '_out_' : options.output;
var newName = path.join(options.output, path.dirname(fileName), path.basename(fileName, path.extname(fileName))) + options.extension;
var originalCode = readFile(path.join(dirPath, fileName));
var minifyResult = uglifyJS.minify(originalCode, uglifyConfiguration);
if (minifyResult.error) {
console.log(minifyResult.error);
throw minifyResult.error;
}
writeFile(newName, minifyResult.code);
});
} else {
var result = '';
// concatenate all the files into one
files.forEach(function (fileName) {
if (options.comments) {
result += '/**** ' + fileName + ' ****/\n';
}
var originalCode = readFile(path.join(dirPath, fileName));
var minifyResult = uglifyJS.minify(originalCode, uglifyConfiguration);
if (minifyResult.error) {
console.log(minifyResult.error);
throw minifyResult.error;
}
result += minifyResult.code + '\n';
});
if (isEmpty(options.output)) {
return result;
} else {
writeFile(options.output, result);
}
}
};
/**
* Checks if the provided parameter is not an empty string.
*/
function isEmpty(str) {
if (typeof str != 'string' || str.trim() == '') {
return true;
}
return false;
}
function readFile(path) {
try {
return fs.readFileSync(path, 'utf-8');
} catch (e) {
console.error("UGLIFYJS FOLDER ERROR: ", path, "was not found !");
return '';
}
}
/**
* Writes the code at the specified path.
*/
function writeFile(filePath, code) {
mkdirp(path.dirname(filePath), function () {
fs.writeFile(filePath, code, function (err) {
if (err) {
console.log('Error: ' + err);
return;
}
console.log('File ' + filePath + ' written successfully !');
});
});
}