Resolve Promises In Parallel (Unified Promise.all & Promise.allSettled)

resolvePromisesInParallel.ts

function isFulfilled<T>(
  result: PromiseSettledResult<T>,
): result is PromiseFulfilledResult<T> {
  return result.status === "fulfilled";
}

export async function resolvePromisesInParallel<T>(
  promises: Promise<T>[],
  options?: {
    ignoreFailures?: boolean;
  },
): Promise<T[]> {
  const { ignoreFailures = false } = options ?? {};
  if (ignoreFailures) {
    const settledResult = await Promise.allSettled(promises);
    return settledResult.filter(isFulfilled).map((it) => it.value);
  } else {
    return Promise.all(promises);
  }
}