code: function AddPluginBrowserifyTransformer() {
      var noop = function(chunk, _, cb) {
        cb(null, chunk);
      };
      var append = function(cb) {
        cb(null, "\nrequire('../src/singleton').addPlugin(module.exports);");
      };
      return function(file) {
        return through(noop, /plugins/.test(file) ? append : undefined);
      };
    }
docs: custom browserify transformer to re-write plugins to self-register with Raven via addPlugin