async for each

asyncForEach.ts

async function asyncForEach<T>(
  array: Array<T>,
  callbackfn: {
    (value: T, index: number, array: T[]): Promise<void> | void;
  }
) {
  for (let index = 0; index < array.length; index++) {
    await callbackfn(array[index], index, array);
  }
}

type User = {
  id: number;
  name: string;
  active: boolean;
  birthday: Date;
};

const users: User[] = [
  { id: 1, name: "Sait", active: true, birthday: new Date("1990-01-03") },
  { id: 2, name: "Ali", active: false, birthday: new Date("1995-05-11") },
  { id: 3, name: "Veli", active: false, birthday: new Date("2000-10-22") },
];

// usage
(async () => {
  await asyncForEach(users, async (user) => {
    await new Promise((r) => setTimeout(r, 1000));

    console.log("user", user.birthday.toISOString());
  });
})();