There’s also another option called drop_console which has been added recently (late 2013) drop_console — default false. Pass true to discard calls to console.* functions This is added to the grunt init config like this: grunt.initConfig({ uglify: { options: { compress: { drop_console: true // <- } }, my_target: { files: { ‘dest/output.min.js’: [‘src/input.js’] } … Read more
I know it might seem like a huge step but I would really recommend using grunt. It’s really simple once you get the hang of it. Here’s a crash course: Install NodeJS Install Grunt CLI (just enter this in console/terminal): npm install -g grunt-cli Create a simple package.json file in the root of your project: … Read more
As ChrisR mentionned, UglifyJS does not support ES6 at all. You need to use terser-webpack-plugin for ES6 (webpack@5 will use this plugin for uglification) npm install terser-webpack-plugin –save-dev Then define in your plugins array const TerserPlugin = require(‘terser-webpack-plugin’) new TerserPlugin({ parallel: true, terserOptions: { ecma: 6, }, }), Source