pause-poll/src/main.js

Promisify setTimeout & setInterval

export const pause = (ms, cb, ...args) => {
    let timeout;
    const promise = new Promise((resolve, reject) => {
        timeout = setTimeout(async () => {
            try {
                resolve(await cb?.(...args));
            }
            catch (error) {
                reject(error);
            }
        }, ms);
    });
    promise.abort = () => clearTimeout(timeout);
    return promise;
};
export const poll = async (interval, times, cb, ...args) => {
    let result;
    const resolve = value => (times = 0) || (result = value);
    const reject = reason => (times = 0) || (result = Promise.reject(reason));
    await (async function basePoll() {
        if (times > 0) {
            const _result = await cb?.(...args, resolve, reject);
            if (times) {
                result = _result;
                --times && (await pause(interval, basePoll));
            }
        }
    })();
    return result;
};