Coffescript 2 输出 es6 代码。 使用webpack和coffee-loader，会自动转成ES5代码吗？

Question

Coffescript 2 is out already. It now produces es6 code. Using webpack and coffee-loader, will it automatically be transpiled to ES5 code?

Answer 1

It won't automatically output ES5, no. You either need to use the transpile option in coffee-loader or pipe coffee-loader 's output to a transpiler like Babel.

webpack.config.js per https://github.com/webpack-contrib/coffee-loader#transpile :

module.exports = {
  module: {
    rules: [
      {
        test: /\.coffee$/,
        use: [
          {
            loader: 'coffee-loader',
            options: { 
              transpile: {
                presets: ['env']
              }
            }
          }
        ]
      }
    ]
  }
}