if you just use the syntax sugar of es6,
can use babel-cli to transfer npx babel src-- out-dir lib
or use node

const babel = require("babel-core")
babel.transformFile("./src/index.js", {extends:'./.babelrc'},function (err, result) {
    let { code, map, ast } = result;
   
  });

get the converted es5 code and then write it to the lib directory or other processing

Don't quote like that, just run the translated code using bable.

distinguish between the directory of source code and the directory of bable translated code.

babel conversion. Most browsers are compatible with ES6 code

code running in browsers. Generally, code running in browsers is converted to es5 using bable. For example, for projects with separate front and rear ends, people are used to using webpack+bable to build

code in front end scaffolding first. After writing, put the compiled files under the public folder

es6 into syntax and core methods. Incompatible methods can introduce ployfill, syntax. You can only use babel to convert

Why do I use your method to write es6 browser will also report syntax errors