Generate an array with random data without using a for loop

Question

I am using the faker.js library to generate random data and I have a couple of factory functions that generate a series of user data:

const createUser = () => {
  return {
    name: faker.name.findName(),
    email: faker.internet.email(),
    address: faker.address.streetAddress(),
    bio: faker.lorem.sentence(),
    image: faker.image.avatar(),
  };
};

const createUsers = (numUsers = 5) => {
  return Array(numUsers).fill(createUser());
};

let fakeUsers = createUsers(5);
console.log(fakeUsers);

The problem with this Array.fill approach is that it returns the same data n number of times. I want 5 different users to be returned from my factory.

How do I do this?

Answer 1

Array.from allows you to create an array and initialize it with values returned from a callback function in one step:

const createUsers = (numUsers = 5) => {
    return Array.from({length: numUsers}, createUser);
}

Answer 2

Create an array with blanks, and then use .map() to create users:

const createUsers = (numUsers = 5) => {
    return Array(numUsers)
        .fill(null)
        .map(createUser);
}