medium-criar-um-projeto-electron-vue-RemovendoWarningsEErros711-webpack.main.config.js

...
let mainConfig = {
  entry: {
    main: path.join(__dirname, '../src/main/index.js')
  },
  externals: [
    ...Object.keys(dependencies || {}),
    {'electron-debug': 'electron-debug'}
  ],
  module: {
    rules: [
      {
        test: /\.(js)$/,
        enforce: 'pre',
        exclude: /node_modules/,
        use: {
          loader: 'eslint-loader',
          options: {
            formatter: require('eslint-friendly-formatter')
          }
        }
      },
      {
        test: /\.js$/,
        use: 'babel-loader',
        exclude: /node_modules/
      },
      {
        test: /\.node$/,
        use: 'node-loader'
      }
    ]
  },
 ...