Two TS unique functions to compare and benchmark later... (now benchmarked!)

benchmark.js

import { Suite } from 'bench-node';

function uniqueA(array) {
  return array.filter((item, index) => array.indexOf(item) === index);
}

function uniqueB(array) {
  return [...new Set(array)];
}

const data = [
    'jkdjfkjdkfdf',
    'erkejrjekrjekr',
    'jkdjfkdjf',
    'jkejrjkejrkejkrjekjrjekrjkerjr',
    1337,
    1337,
    'jkejrjkejrkejkrjekjrjekrjkerjr',
    'kjkjkjkererer',
    '0122222333333',
    '0122222333333',
    '0122222333333',
    '0122222333333',
    '0122222333333',
    '0122222333333',
    '0122222333333',
    '0122222333333',
    'kjere,mr,emr,me,rm,erllekre',
    'kwjekjejriererueerkrje',
    'jdfjkjdfjkfkdjfjjfdj'
];

const suite = new Suite();

suite.add('Using uniqueA', () => {
    uniqueA(data);
});

suite.add('Using uniqueB', () => {
    uniqueB(data);
});

suite.run();

// $ node --allow-natives-syntax benchmark.js
// Using uniqueA                                 x 8,284,339 ops/sec (12 runs sampled) v8-never-optimize=true min..max=(118.72ns...122.45ns)
// Using uniqueB                                 x 5,515,393 ops/sec (11 runs sampled) v8-never-optimize=true min..max=(178.95ns...184.18ns)

unique.ts

function uniqueA<T>(array: T[]): T[] {
  return array.filter((item, index) => array.indexOf(item) === index);
}

function uniqueB<T>(array: T[]): T[] {
  return [...new Set(array)];
}