npm run start
自定运行 node build/dev-server.js
手动运行 npx node build/dev-server.js
/config
设置 process.env.NODE_ENV = 配置的
webpack(webpackCOnfig)
webpack-dev-middleware
webpack-hot-middleware options = { log:()=>{}, path:'/__webpack_hmr', heartbeat: 10 * 1000 } devHotMiddleware = require('webpack-hot-middleware')(compiler,options)
app.use(devMiddleware); app.use(devHotMiddleware);