Dump touch event

dumpTouchEvent.ts

  function dumpTouchEvent(event: TouchEvent): string {
    // Start with the basics
    const result = {
      type: event.type,
      timeStamp: event.timeStamp,
      isTrusted: event.isTrusted,
      bubbles: event.bubbles,
      cancelable: event.cancelable,
      defaultPrevented: event.defaultPrevented,
      eventPhase: event.eventPhase,
    };

    // Handle touches, targetTouches, and changedTouches
    ['touches', 'targetTouches', 'changedTouches'].forEach((touchListName) => {
      if (event[touchListName]) {
        result[touchListName] = [];
        for (let i = 0; i < event[touchListName].length; i++) {
          const touch = event[touchListName][i];
          result[touchListName].push({
            identifier: touch.identifier,
            screenX: touch.screenX,
            screenY: touch.screenY,
            clientX: touch.clientX,
            clientY: touch.clientY,
            pageX: touch.pageX,
            pageY: touch.pageY,
            radiusX: touch.radiusX,
            radiusY: touch.radiusY,
            rotationAngle: touch.rotationAngle,
            force: touch.force,
          });
        }
      }
    });

    return JSON.stringify(result, null, 2);
  }