Exclude files from webpack transformation

Sometimes you want every file that has the .dumb extension to be transformed by the dumb-loader except for one particularly dumb file that should remain as is, as a lesson for to all the other dumb files. Just use the handy exclude configuration on modules.rules.loader to make sure that file doesn't get transformed.

module.exports = {
  module: {
    rules: [
      {
        test: /\.dumb$/,
        loader: 'dumb-loader',
        exclude: /really\.dumb/
      }
    ]
  }
}

Now that really dumb file won't get transformed by the dumb loader.