studywebpack
npm install webpack webpack-cli --save-dev
npm install --save-dev style-loader css-loader npm install --save-dev file-loader npm install --save-dev csv-loader xml-loader
npm install --save-dev html-webpack-plugin npm install clean-webpack-plugin --save-dev
###有问题 时 "babel-loader": "^7.1.5", npm install --save-dev @babel/core npm i -S react react-dom npm i -D babel-loader babel-core npm i -D babel-preset-react
npm i -D webpack-dev-server
devtool: 'inline-source-map',
npm install --save-dev express webpack-dev-middleware config中设置: publicPath: '/'
npm install --save-dev webpack-merge
npm install --save uglifyjs-webpack-plugin