webpack 入门级配置（最新）

目前最的正式版本是：4.31.0，推荐使用本地安装，webpack 官网 - 指南

1. 初始化

• 确认 node 的版本号 node -v
• 新建一个项目文件夹 mkdir demo
• 初始化 npm init -y
• npm 安装 webpack webpack-cli –save-dev
• 在项目文件夹下新建一个 src 文件夹，src 文件夹包含 index.js,index.html
• 新建 webpack 配置文件 webpack.config.js

const path = require('path');
module.exports = {
    entry:'./src/index.js'.
    ouyput:{path: path.resolve(__dirname,'dist'),
        filename: 'bundle.js',
    }
}

安装 webpack-dev-server

• 本地安装 webpack-dev-server npm i webpack-dev-server -D
• 找到 package.json 文件，搜索 scripts，添加 "dev": "webpack-dev-server --open --port 3000 --contentBase src --hot" 代码
• 此时在命令行运行npm run dev, 即可打包文件

安装 html-webpack-plugin

• 命令行运行npm install --save-dev html-webpack-plugin
• 在 webpack 配置文件添加配置信息
• const HtmlWebpackPlugin = require('html-webpack-plugin');
• plugins:[new HtmlWebpackPlugin({template:'./dist/index.html'})]

加载 css

• 命令行运行npm install --save-dev style-loader css-loader
• 配置文件配置module:{reules:[{test:/\.css$/,use:['style-loader','css-loader']}]}

安装 babel-loader

• 命令行运行npm install -D babel-loader @babel/core @babel/preset-env webpack
• 配置文件配置

module: {
  rules: [
    {
      test: /\.js$/,
      exclude: /node_modules/,
      use: {
        loader: 'babel-loader',
        options: {presets: ['@babel/preset-env']
        }
      }
    }
  ]
}

• 运行npm install -D @babel/plugin-transform-runtime
• 配置文件

use: {
      loader: 'babel-loader',
      options: {presets: ['@babel/preset-env'],
        plugins: ['@babel/plugin-transform-runtime']
      }
    }

使用 vue

• 命令行运行 npm i vue -D
• 配置文件配置

# const VueLoaderPlugin = require('vue-loader/lib/plugin');


# resolve:{
        alias:{'vue$':"vue/dist/vue.esm.js"}
    }
    

安装 vue-loader

• 命令行npm install -D vue-loader vue-template-compiler
• 配置文件

+ const VueLoaderPlugin = require('vue-loader/lib/plugin');

-  rules: [
      // ... 其它规则
      {
        test: /\.vue$/,
        loader: 'vue-loader'
      }
    ]
    
- plugins: [
    // 引入这个插件！new VueLoaderPlugin()]

附上源代码

webpack.config.js

const path = require('path');
const VueLoaderPlugin = require('vue-loader/lib/plugin');
const HtmlWebpackPlugin = require('html-webpack-plugin');
module.exports = {
    entry: './src/index.js',
    output: {path: path.resolve(__dirname,'dist'),
        filename: 'bundle.js',
    },
    plugins:[new VueLoaderPlugin(),
        new HtmlWebpackPlugin({template:'./src/index.html'}),
        
    ],
    module:{
        rules:[
            {
                test: /\.css$/,
                use: [
                    'style-loader',
                    'css-loader'
                ]
            },
            {test:/\.(png|svg|ipg|gif)$/,
                use:['file-loader']
            },
            {
                test:/\.vue$/,
                loader:'vue-loader'
            },
            {
                test: /\.js$/,
                exclude: /node_modules/,
                use: {
                  loader: 'babel-loader',
                  options: {presets: ['@babel/preset-env'],
                    plugins: ['@babel/plugin-transform-runtime']
                  }
                }
            },
            
        ]
    },
    resolve:{
        alias:{'vue$':"vue/dist/vue.esm.js"}
    }
}

package.json

{
  "name": "mint-demo",
  "version": "1.0.0",
  "description": "\"",
  "main": "index.js",
  "scripts": {
    "test": "echo \"Error: no test specified\"&& exit 1",
    "dev": "webpack-dev-server --open --port 3000 --contentBase src --hot"
  },
  "author": "","license":"ISC","devDependencies": {"@babel/core":"^7.4.4","@babel/plugin-transform-runtime":"^7.4.4","@babel/preset-env":"^7.4.4","babel-loader":"^8.0.6","css-loader":"^2.1.1","file-loader":"^3.0.1","html-webpack-plugin":"^3.2.0","style-loader":"^0.23.1","vue-loader":"^15.7.0","vue-template-compiler":"^2.6.10","webpack":"^4.31.0","webpack-cli":"^3.3.2","webpack-dev-server":"^3.3.1"},"dependencies": {"vue":"^2.6.10"}
}

index.js

import Vue from 'vue';
import App from './App.vue';
console.log('444');
var app = new Vue({
    el:'#app',
    data:{msg:'ccc'},
    render: c => c(App)
    
})

console.log('2323');

index.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>vue</title>
</head>
<body>
    <div id="app">
        {{msg}}
    </div>
</body>
</html>

App.vue

<template>
    <div>
        这是 app.vue
    </div>
</template>
<script>
export default {
}
</script>

<style scoped>

</style>

欢迎指正哦！
参照：
webpack 官网
vue 官网