webpack4.x 报错：Error: Chunk.entrypoints: Use Chunks.groupsIterable and filter by instanceof Entrypoin

在配置webpack4报错：Error: Chunk.entrypoints: Use Chunks.groupsIterable and filter by instanceof Entrypoint instead时，应该是插extract-text-webpack-plugin的版本问题

解决方案如下：

npm i -D extract-text-webpack-plugin@next

或者采用

npm install -save-dev extract-text-webpack-plugin@next

安装后的版本是（package.json）：

  "devDependencies": {
  ......
    "extract-text-webpack-plugin": "^4.0.0-beta.0",
  ......
  },