Using fp-ts to iterate through a list of promises transforming them to a sequence then extracting the ids

fp-ts-get-db-ids-from-bulk-insert.ts

import {pipe} from "fp-ts/lib/pipeable"
import * as A from "fp-ts/lib/Array"
import * as T from "fp-ts/lib/Task"

const ids = await pipe(
  someListings,
  A.map(listing => {
    return () => persistence.createListing(listing)
  }),
  A.array.sequence(T.task),
  T.map(listings => listings.map(listing => listing.id)),
)()