必定不要運行npm i XXX -g(-d) 必定要指定版本，儘可能低版本，也不最新版本，會致使不兼容和指令不同的問題。前端
1.安裝webpack-dev-server 報錯，說須要webpack-cli，緣由，這兩個之中某一個版本過高。，從新安裝低版本webpack
2.安裝webpack-cli ，而後仍是不能使用，程序員
3. npm WARN webpack-cli@3.0.8 requires a peer of webpack@^4.x.x but none is installed. You must install peer dependencies yourself.。。說明安裝的Webpack版本過高，切換到，---》》》》》》》》》"webpack": "^3.6.0",web
4.最後安裝 "webpack-cli": "^3.0.0",npm
5.安裝"webpack-dev-server": "^2.9.1"webpack-dev-server
報錯總結：ui
【1】.net
npm WARN webpack-cli@3.0.8 requires a peer of webpack@^4.x.x but none is installed. You must install peer dependencies yourself.server
【2】blog
npm WARN webpack-dev-middleware@3.1.3 requires a peer of webpack@^4.0.0 but none is installed. You must install peer dependencies yourself.
npm WARN webpack-dev-server@3.1.4 requires a peer of webpack@^4.0.0-beta.1 but none is installed. You must install peer dependencies yourself.
【3】
C:\Apache24\htdocs\example\Aproject\test\first-day\Vue-study\02-day\web-pack
> webpack-dev-server
The CLI moved into a separate package: webpack-cli.
Please install 'webpack-cli' in addition to webpack itself to use the CLI.
-> When using npm: npm install webpack-cli -D