message: Fix lints in mocha-bootload
diff: * LICENSE file in the root directory of this source tree.
  */
  -var chai = require('chai');
  -
  -process.on('unhandledRejection', function (error) {
  +process.on('unhandledRejection', error => {
  + /* eslint-disable no-console */
  console.error('Unhandled Promise Rejection:');
  console.error(error && error.stack || error);
  + /* eslint-enable no-console */
  });
  