webpack
$ npm i webpack webpack-cli -D
$ touch webpack.config.js
const path = require("path");
module.exports = {
entry: NEW_VERSION_FILE_PATH,
mode: "development",
output : {
filename : OLD_VERSION_FILE_NAME,
path: path.resolve(__dirname,OLD_VERSION_FILE_PATH),
}
}
$ webpack --config webpack.config.js
npm i -D babel-loader @babel/core @babel-preset-env