详解搭建es6+devServer简单开发环境

#bebal相关
yarn add babel-core babel-loader babel-preset-env

# webpack相关
yarn add webpack webpack-cli webpack-dev-server html-webpack-plugin

{
 "name": "design-pattern",
 "version": "1.0.0",
 "description": "js设计模式的学习深入",
 "main": "index.js",
 "author": "axin <laputacloud@163.com>",
 "license": "MIT",
 "scripts": {
  "dev": "webpack-dev-server --config ./webpack.dev.config.js --mode development"
 },
 "dependencies": {},
 "devDependencies": {
  "babel-core": "^6.26.3",
  "babel-loader": "7",
  "babel-preset-env": "^1.7.0",
  "html-webpack-plugin": "^3.2.0",
  "webpack": "^4.19.1",
  "webpack-cli": "^3.1.0",
  "webpack-dev-server": "^3.1.8"
 }
}

const path = require('path')
const htmlWebpackPlugin = require('html-webpack-plugin')

module.exports = {
 entry: './src/index.js',
 output: {
  path: __dirname,
  filename: './dist/bundle.js'
 },

 module: {
  rules: [{
   test: /\.js?$/,
   exclude: /(node_modules)/,
   loader: 'babel-loader'
  }]
 },

 plugins: [
  new htmlWebpackPlugin({
   template: './index.html'
  })
 ],

 devServer: {
  contentBase: path.join(__dirname, './dist'),
  open: true, // 自动打开浏览器
  port: 6688, // devServer对应的端口号
 }
}

{
 "presets": ["env"]
}