webpack4配置webpack.config.js文件及we

webpack4配置webpack.config.js文件及webpack环境配置 webpack4配置webpack.config.js文件及webpack环境配置

webpack.config.js里的配置，不再支持 module下的loaders，需要把图一中loaders改成图二中的rules。

环境配置

第一步：安装nodejs和npm，检验安装成功的方法是node  -v  npm  -v

第二步：初始化项目

npm init

第三步：全局安装webpack webpack-dev-server babel-loader babel-core

npm install -g webpack webpack-dev-server babel-loader babel-core

第四步：安装开发依赖react react-dom babel-preset-react babel-preset-es2015 webpack webpack-dev-server babel-loader babel-core

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

第五步：配置webpack.config.js文件