webpack启动流程

./node_modules/.bin/webpack

./node_modules/webpack/bin/webpack.js

runCli(cli);

webpack-cli/package.json

bin/cli.js

执行runCLi()

webpack-cli/lib/bootstrap.js/runCLi

webpack-cli/lib/webpack-cli.js/constructor()

调用WebpackCLi

引入webpack目的

传入 webpack.config.js 等配置

执行 run 方法目的

调用this.makeCommand

makeCommand内部执行makeOption方法

makeCommand在执行runWebpack方法

runWebpack执行createCompiler

createCompiler传入webpack配置生成 compiler

直接启动webpack

const webpack = require("webpack");
const config = require("../webpack.config");
const compiler = webpack(config);
compiler.run((err, status) => {
  if (err) {
    console.error(err);
  } else {
    console.log(status);
  }
});

执行 node

webpack源码