webpack4新建一个项目

Create a new directory

　　mkdir webpack-4-quickstart

Initialize a package.json by running:

　　npm init -y

 1 {
 2   "name": "test",
 3   "version": "1.0.0",
 4   "description": "",
 5   "main": "index.js",
 6   "scripts": {
 7     "test": "echo \"Error: no test specified\" && exit 1",
 8     "dev": "webpack --mode development",
 9     "build": "webpack --mode production",
10     "server": "webpack-dev-server --config webpack.config.js"
11   },
12   "author": "",
13   "license": "ISC",
14   "devDependencies": {
15     "babel-core": "^6.26.0",
16     "babel-loader": "^7.1.4",
17     "babel-preset-env": "^1.6.1",
18     "css-loader": "^0.28.11",
19     "html-webpack-plugin": "^3.1.0",
20     "style-loader": "^0.20.3",
21     "webpack": "^4.2.0",
22     "webpack-cli": "^2.0.13",
23     "webpack-dev-server": "^3.1.1"
24   }
25 }

package.json