video-ad-sdk/dist/adUnit/helpers/metrics/handlers/onImpression.js

VAST/VPAID SDK that allows video ads to be played on top of any player

import { linearEvents } from '../../../../tracker';
const { impression, creativeView } = linearEvents;
export const onImpression = ({ videoElement }, callback) => {
    let started = false;
    const impressionHandler = () => {
        const { currentTime } = videoElement;
        if (!started && currentTime > 0) {
            started = true;
            callback(impression);
            callback(creativeView);
            videoElement.removeEventListener('timeupdate', impressionHandler);
        }
    };
    videoElement.addEventListener('timeupdate', impressionHandler);
    return () => {
        videoElement.removeEventListener('timeupdate', impressionHandler);
    };
};