webpack 遇到报错情况及解决

• webpack2 报错：optimize.OccurenceOrderPlugin is not a function。
  原因：上个版本拼写错误，少写了一个字母r，新版本修正过来了。要写成这样：OccurrenceOrderPlugin。

• 报错：This seems to be a pre-built javascript file. Though this is possible, it's not recommended. Try to require the original source to get better results.
  解决：

{
  resolve: {
    alias: {
      'react': 'my/react/path'
    }
  },
  module: {
    noParse: [/react/]
  }
}