video-ad-sdk/dist/adUnit/helpers/vpaid/waitFor.js

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

export const waitFor = (creativeAd, event, timeout) => new Promise((resolve, reject) => {
    let timeoutId;
    const handler = () => {
        if (typeof timeout === 'number') {
            window.clearTimeout(timeoutId);
        }
        creativeAd.unsubscribe(handler, event);
        resolve();
    };
    if (typeof timeout === 'number') {
        timeoutId = window.setTimeout(() => {
            creativeAd.unsubscribe(handler, event);
            reject(new Error(`Timeout waiting for event '${event}'`));
        }, timeout);
    }
    creativeAd.subscribe(handler, event);
});