code: function watchAngularBindings(done) {
    rollupWatch(rollupConfigs.angularOns).on('event', event => {
      switch (event.code) {
        case 'BUNDLE_START':
          $.util.log(`Bundling 'angularjs' ...`);
          break;
        case 'BUNDLE_END':
          copyAngularBindings();
          $.util.log(`Finished 'angularjs' bundle`);
          break;
        case 'ERROR':
          throw new Error('Encountered an error while bundling\n\n', event.error);
        case 'FATAL':
          $.util.log($.util.colors.red('Encountered an unrecoverable error\n\n', event.error));
          process.exit(1);
          break;
      }
    });
    done();
  }
docs: TODO: Remove this when AngularJS is no longer part of the core The only difference between this task and the one-line `watch-angular-bindings` above is that this copies the Angular files into core. From 2.11.0 we won't need this.