import babel from "rollup-plugin-babel" import uglify from "rollup-plugin-uglify" const uglifyOptions = { mangle: false, compress: false, output: { beautify: true, indent_level: 2 } } export default { input: "app/javascript/action_cable/index.js", output: { file: "app/assets/javascripts/action_cable.js", format: "umd", name: "ActionCable" }, plugins: [ babel(), uglify(uglifyOptions) ] }