fier));
      });
      button.addEventListener('touchend', event => {
        log('Touchend:', ...Array.from(event.changedTouches).map(touch => touch.identifier));
      });
      button.addEventListener('touchmove', event => {
        log('Touchmove:', ...Array.from(event.changedTouches).map(touch => touch.identifier));
      });
      function log(...args) {
        console.log.apply(console, args);
        result.push(args.join(' '));
      }
      function getResult() {
        let temp = result;
     