Run results for: Set vs some for arrays of objects

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.1 Safari/605.1.15

Browser: Safari 17

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 2 years ago

Benchmark engine: Benchmark.js

Set

86K/s

Some

654/s

View exact numbers

Test name	Executions per second
✓ Set	86,417 Ops/sec
Some	654 Ops/sec

Script Preparation code:

var arr = new Array(1000).fill({ field1: Math.ceil(Math.random() * 1000) });
var arr2 = new Array(1000).fill({ field2: Math.ceil(Math.random() * 1000) });

Tests:

Set
const set = new Set(arr.map((el) => el.field1)); const result = arr2.filter(el => set.has(el.field2));
Some
const result = arr2.filter(el => arr.some((i) => el.field2 === i.field1));