TypeScript: find map value with promise

array-util.ts

const findMapPromises = async <T, S> (arr: T[], predicate: (value: T, index: number, obj: T[]) => Promise<S>): Promise<S> => {
  for (let i = 0; i < arr.length; i++) {
    try {
      const r = await predicate(arr[i], i, arr)
      return r
    } catch (e) {
      // next.
    }
  }
  return null
}