vue项目初始化时npm run dev报错webpack-dev-server解决方法

原因：这是新版webpack存在的BUG，卸载现有的新版本webpack，装老版本就好

webpack-dev-server 版本需要从最新版本降低到如下版本,因为开始构建项目所用的插件版本太低

（1）、npm uninstall webpack-dev-server

（2）、npm install webpack-dev-server@2.9.1

（3）、npm run dev

===================

如何执行npm uninstall webpack-dev-server 也报错的话只能用下面方法了

原因是你的node_modules有意外改动，导致依赖库不完整。

解决：

1.删除项目下的node_modules

2.在项目目录下重新执行npm install 或者cnpm install，会重新生成node_modules

3.执行npm run build 或者cnpm run build

4.执行npm run dev 或者cnpm run dev

==================

PS E:\webcode\bigbullmobile> cnpm run dev

> bigbullmobile@1.0.0 dev E:\webcode\bigbullmobile

> webpack-dev-server --inline --progress --config build/webpack.dev.conf.js

internal/modules/cjs/loader.js:573

throw err;

^

Error: Cannot find module 'array-includes'

at Function.Module._resolveFilename (internal/modules/cjs/loader.js:571:15)

at Function.Module._load (internal/modules/cjs/loader.js:497:25)

at Module.require (internal/modules/cjs/loader.js:626:17)

at require (internal/modules/cjs/helpers.js:20:18)

at Object.<anonymous> (E:\webcode\bigbullmobile\node_modules\_webpack-dev-server@2.11.3@webpack-dev-server\lib\polyfills.js:6:18)

at Module._compile (internal/modules/cjs/loader.js:678:30)

at Object.Module._extensions..js (internal/modules/cjs/loader.js:689:10)

at Module.load (internal/modules/cjs/loader.js:589:32)

at tryModuleLoad (internal/modules/cjs/loader.js:528:12)

at Function.Module._load (internal/modules/cjs/loader.js:520:3)

npm ERR! code ELIFECYCLE

npm ERR! errno 1

npm ERR! bigbullmobile@1.0.0 dev: `webpack-dev-server --inline --progress --config build/webpack.dev.conf.js`

npm ERR! Exit status 1

npm ERR!

npm ERR! Failed at the bigbullmobile@1.0.0 dev script.

npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

npm ERR! A complete log of this run can be found in:

npm ERR! C:\Users\zheng\AppData\Roaming\npm-cache\_logs\2019-01-26T18_31_50_813Z-debug.log

PS E:\webcode\bigbullmobile>