/**
 * Copyright 2020, SumUp Ltd.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import nextTick from './next-tick';

// make sure that callback runs after `loadEventEnd`
// which means that load of the current document is completed
// https://developer.mozilla.org/en-US/docs/Web/API/PerformanceNavigationTiming/loadEventEnd
export default function onAfterPageLoad(callback: () => void): void {
  if (document.readyState === 'complete') {
    nextTick(callback);
  } else {
    window.addEventListener('pageshow', () => nextTick(callback));
  }
}