@ou-imdt/utils/lib/isPromiseResolvedAll.js

Utility library for interactive media development

/**
 * dynmaically checks the state of a list of Promises, only resolving when all listed Promises are
 * (equivalant to Promise.all but allows the list to be dynamically updated after being called)
 * @param {array[Promise]} promises - dynamic list of Promise objects
 * @returns {Promise<array>}
 */
export default async function isPromiseResolvedAll(promises) {
  const { promise, resolve } = Promise.withResolvers();
  const current = [...promises];
  const data = await Promise.all(promises);
  const hasChanged = (promises.length !== current.length || promises.some((el, index) => el !== current[index]));
  hasChanged ? resolve(await isPromiseResolvedAll(promises)) : resolve(data);
  return promise;
};