@naturalcycles/js-lib/src/promise/pFilter.ts

Standard library for universal (browser + Node.js) javascript

import type { AsyncPredicate } from '../types.js'

export async function pFilter<T>(iterable: Iterable<T>, filterFn: AsyncPredicate<T>): Promise<T[]> {
  const items = [...iterable]
  const predicates = await Promise.all(items.map((item, i) => filterFn(item, i)))
  return items.filter((_item, i) => predicates[i])
}