Copy Plugin has been initialized using an options object that does not match the API schema

Invalid options object. Copy Plugin has been initialized using an options object that does not match the API schema.
 - options[0] should be an object:
   object { patterns, options? }
ValidationError: Invalid options object. Copy Plugin has been initialized using an options object that does not match the API schema.

是plugin配置产生的问题，查看

  plugins: [
    new CleanWebpackPlugin(),
    new CopyWebpackPlugin(['public'])
  ]

修改成

 plugins:[
  new CleanWebpackPlugin(),
  new CopyWebpackPlugin({
    // 'public/**'
   patterns: [
   'public'
    ]  
   })
  ]