Webpack not converting ES6 to ES5

If you want to compile ES6 to ES5 you need to install Babel ES2015 preset.

npm install babel-preset-es2015

Then you need to enable this preset. One way to enable this ES6 to ES5 compilation is using babel-loader query string:

  module: {
    loaders: [
      {
        test: /\.js$/,
        loader: 'babel-loader?presets[]=es2015'
      }
    ]
  }

or query option:

  module: {
    loaders: [
      {
        test: /\.js$/,
        loader: 'babel-loader',
        query: {
          presets: ['es2015']
        }
      }
    ]
  }