title: unique tags: array,beginner

Returns all unique values in an array.

Create a Set from the given array to discard duplicated values, then use the spread operator (...) to convert it back to an array.

const unique = (arr: any[]) => [...new Set(arr)];

unique([1, 2, 2, 3, 4, 4, 5]); // [1, 2, 3, 4, 5]