Do you know what will be the output of this code? const { a, ...rest } = { a: 1, b: 2, c: 3 }; console.log(rest);

What does the rest operator do in object destructuring?

Do you know what will be the output of this code?

JavaScript

const { a, ...rest } = { a: 1, b: 2, c: 3 };
console.log(rest);

Show answer and explanation

The answer is { b: 2, c: 3 }.

...rest gathers every property that wasn’t destructured into a new object. It’s a common way to copy an object without one key.