Async array filter

asyncFilter.ts

import { asyncEach } from './asyncEach'; // From https://gist.github.com/fersilva16/bdf2d0b9a5eedbcf7232760df876a87d

export async function asyncFilter<T>(
  array: { map(callback: (value: T) => any): Promise<any>[] },
  predicate: (value: T) => Promise<boolean>
): Promise<T[]> {
  const result: T[] = [];

  await asyncEach(array, async (value, ...args) => {
    const shouldAdd = await predicate(value, ...args);

    if (shouldAdd) result.push(value);
  });

  return result;
}