Handling Iterables with Effect.gen/yield* and Effect.all in Typescript

export const createUsers = Effect.fn("createUsers")(function* () {
  const myHandle = String.split(yield* UserEmail, "@").at(0) as string;
  const toInsert = Array.prepend(mock.users, myHandle);

  const insertables = toInsert.map(createInsert); // string[]

  const created = yield* Effect.all(
    insertables.map((insert) => users.create(insert)), // users.create returns Effect<string[], ..., ...>
  );

  return created;
});