Function pointerCaptureFn

packages/dom-event-testing-library/domEnvironment.js:23–29

export function setPointerEvent(bool) {
  const pointerCaptureFn = name => id => {
    if (typeof id !== 'number') {
      if (__DEV__) {
        console.error('A pointerId must be passed to "%s"', name);
      }
    }
  };
  global.PointerEvent = bool ? emptyFunction : undefined;
  global.HTMLElement.prototype.setPointerCapture = bool
    ? pointerCaptureFn('setPointerCapture')