webpack base config for vue cli with support for Bootstrap and Font-awesome

webpack.base.conf.js

var path = require('path')

module.exports = {
  entry: {
    app: './src/main.js'
  },
  output: {
    path: path.resolve(__dirname, '../dist/static'),
    publicPath: '/static/',
    filename: '[name].js'
  },
  resolve: {
    extensions: ['', '.js', '.vue'],
    alias: {
      'src': path.resolve(__dirname, '../src')
    }
  },
  resolveLoader: {
    root: path.join(__dirname, 'node_modules')
  },
  module: {
    loaders: [
      {
        test: /\.vue$/,
        loader: 'vue'
      },
      {
        test: /\.js$/,
        loader: 'babel!eslint',
        exclude: /node_modules/
      },
      {
        test: /\.json$/,
        loader: 'json'
      },
      { 
        test: /\.css$/,
        loader: 'style!css'
      },
      {
        test: /\.woff(\?v=\d+\.\d+\.\d+)?$/,
        loader: "url?limit=10000&mimetype=application/font-woff"
      },
      {
        test: /\.woff2(\?v=\d+\.\d+\.\d+)?$/,
        loader: "url?limit=10000&mimetype=application/font-woff"
      },
      {
        test: /\.ttf(\?v=\d+\.\d+\.\d+)?$/,
        loader: "url?limit=10000&mimetype=application/octet-stream"
      },
      {
        test: /\.eot(\?v=\d+\.\d+\.\d+)?$/,
        loader: "file"
      },{
        test: /\.svg(\?v=\d+\.\d+\.\d+)?$/,
        loader: "url?limit=10000&mimetype=image/svg+xml"
      },
      {
        test: /\.(png|jpg|gif|svg)$/,
        loader: 'url',
        query: {
          limit: 10000,
          name: '[name].[ext]?[hash:7]'
        }
      }
    ]
  },
  vue: {
    loaders: {
      js: 'babel!eslint'
    }
  },
  eslint: {
    formatter: require('eslint-friendly-formatter')
  }
}

hello, I want to know what's the meaning of these codes:
vue: {
loaders: {
js: 'babel!eslint'
}
}
and When I use webpack-validator, it can give me an error

[1] "vue" is not allowed.

please help me , thank you!