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PresetUglify.js
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PresetUglify.js
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// https://github.com/webpack-contrib/babili-webpack-plugin
// https://github.com/mozilla-neutrino/neutrino-dev/blob/master/packages/neutrino-middleware-minify/index.js
// https://github.com/babel/babili/blob/master/packages/babel-preset-babili/README.md#options
/* eslint camelcase: 0 */
module.exports = class PresetUglify {
init() {
this.args = {
warnings: false,
compress: {
screw_ie8: true,
dead_code: true,
unused: true,
drop_debugger: true,
// various optimizations for boolean context,
// for example !!a ? b : c → a ? b : c
booleans: true,
},
mangle: {
screw_ie8: true,
},
}
}
setArgs(args) {
if (args) this.args = args
return this
}
toWebpack() {
// uglify is not as helpful as babeli
const {optimize} = require('webpack')
const {UglifyJsPlugin} = optimize
return {plugins: [new UglifyJsPlugin(this.args)]}
// .plugin('uglify')
// .use(UglifyJsPlugin, this.args)
// .init(() => new UglifyJsPlugin(this.args))
// return {plugins: [new UglifyJsPlugin(this.args)]}
}
toRollup() {
const uglify = require('rollup-plugin-uglify')
const filesize = require('rollup-plugin-filesize')
// Filesize plugin needs to be last
// to report correct filesizes when minified
return {
pluginIndex: 100,
plugins: [uglify(), filesize()],
}
}
toFuseBox() {
const {UglifyJSPlugin} = require('fuse-box')
return {plugins: [UglifyJSPlugin()]}
}
}