webpack简单总结

Posted 2020-10-26 moran1992

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这里用一个react例子来总结webpack~

安装搭建node环境

下载node地址：https://nodejs.org/en/download/

测试环境是否安装成功，安装成功之后执行命令可以看到node的版本号。

1 node -v//查看node版本

查看npm版本

1 npm -v//查看npm版本

现在准备环境做好，开始webpack之旅。

首先利用npm生成一个package.json文件，这里生成一个默认的就可以。

1 npm init -y

安装之后的package.json

 1 {
 2   "name": "webpacktest",
 3   "version": "1.0.0",
 4   "description": "",
 5   "main": "index.js",
 6   "scripts": {
 7     "test": "echo \\"Error: no test specified\\" && exit 1"
 8   },
 9   "keywords": [],
10   "author": "",
11   "license": "ISC"
12 }

安装webpack

安装webpack 有两种方式，一种是全局安装

1 npm install -g webpack

一种是依赖安装，将webpack信息依赖到package.json中

1 npm install --save-dev webpack

这里采用第二种安装方式，安装之后会发现在package.json中的变化，package.json中多了webpack的信息。

 1 {
 2   "name": "webpacktest",
 3   "version": "1.0.0",
 4   "description": "",
 5   "main": "index.js",
 6   "scripts": {
 7     "test": "echo \\"Error: no test specified\\" && exit 1"
 8   },
 9   "keywords": [],
10   "author": "",
11   "license": "ISC",
12   "devDependencies": {
13     "webpack": "^4.1.0"
14   }
15 }

要基于react，所以还要安装一些必要的包

1 npm install react react-dom babel-core babel-loader babel-preset-es2015 babel-preset-react --save-dev

安装之后的package.json

 1 {
 2   "name": "webpacktest",
 3   "version": "1.0.0",
 4   "description": "",
 5   "main": "index.js",
 6   "scripts": {
 7     "test": "echo \\"Error: no test specified\\" && exit 1"
 8   },
 9   "keywords": [],
10   "author": "",
11   "license": "ISC",
12   "devDependencies": {
13     "babel-core": "^6.26.0",
14     "babel-loader": "^7.1.4",
15     "babel-preset-es2015": "^6.24.1",
16     "babel-preset-react": "^6.24.1",
17     "react": "^16.2.0",
18     "react-dom": "^16.2.0",
19     "webpack": "^4.1.0"
20   }
21 }