详解webpack es6 to es5支持配置

npm install webpack --save-dev

npm install --save-dev babel-core babel-preset-es2015

 npm install --save-dev babel-loader

module.exports = {
  entry: './src/js/app.js',
  output: {
    path: './dest',
    filename: 'app.bundle.js',
  },
  module: {
    loaders: [{
      test: /\.js$/,
      exclude: /node_modules/,
      loader: 'babel-loader',
    }]
  },
  babel: {
   presets: ['es2015']
  },
}