Method notifySync

testing/intersection-observer-stub.js:58–73

* @param {!IntersectionObserverEntry|!Array } entryOrEntries * @param {{ * root: (!Document|!Element|undefined), * rootMargin: (string|undefined), * thresholds: (number|!Array |undefined), * }=} options

(entryOrEntries, options = {})

   * }=} options
   */
  notifySync(entryOrEntries, options = {}) {
    const entries = Array.isArray(entryOrEntries)
      ? entryOrEntries
      : [entryOrEntries];
    this.observers.forEach((observer) => {
      if (!matchesObserver(observer, options)) {
        return;
      }
      const subEntries = entries.filter(({target}) =>
        observer.elements.has(target)
      );
      if (subEntries.length > 0) {
        observer.callback(subEntries);
      }
    });
  }
}

class IntersectionObserverStub {