text: export function describe (name, cb) {
      console.group(name);
      cb();
      console.groupEnd(name);
  }
  export function it(name, cb) {
      try {
          cb();
          console.log('\x1b[32m', '\u2713', name, '\x1b[0m');
      } catch (e) {
          console.log('\x1b[31m', '\u2718', name, '\x1b[0m');
          console.group('');
          console.log(e.stack);
          console.groupEnd('');
      }
  }