/** * 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'; let hadInteraction = false; export default function onFirstUserInteraction(callback: () => void): void { const events = ['scroll', 'keydown', 'pointerdown']; const handler = (): void => { if (!hadInteraction) { nextTick(callback); hadInteraction = true; } }; const options = { once: true, passive: true, capture: true }; for (const event of events) { document.addEventListener(event, handler, options); } }