概念 | webpack
    https://webpack.docschina.org/concepts/图片.png

    1. const webpack = require("webpack");
    2. const config = require("./webpack.config.js");
    4. debugger;
    6. const compiler = webpack(config);
    8. function compilerCallback(err, stats) {
    9.   const statsString = stats.toString();
    10.   console.log(statsString);
    11. }
    12. debugger;
    14. compiler.run((err, stats) => {
    15.   compilerCallback(err, stats);
    16. });