webpack-dev-server config.js Cannot find module

Error: Cannot find module，webpack-dev-server --config 报错找不到模块

webpack-dev-server 设置 webpack.config.js

webpack-dev-server --config config/webpack.dev.js

报错：

Error: Cannot find module 'F:\jutils\dist\config\webpack.dev.js'

记得加上级路径（相对路径）

webpack-dev-server --config ../config/webpack.dev.js