Run results for: Some vs includes

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/141.0.0.0 Safari/537.36

Browser: Chrome 141

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 9 months ago

includes

1.3M/s

some

270K/s

View exact numbers

Test name	Executions per second
✓ includes	1,294,480 Ops/sec
some	269,926 Ops/sec

Script Preparation code:

var array1 = [];
var array2 = new Array(100).fill(0).map((x, i) => { return { id : i } })

Tests:

some
array2.forEach((x) => { if (!array1.some(({ id }) => id === x.id)) { array1.push(x) } })
includes
array2.forEach((x) => { if (!array1.includes(x)) { array1.push(x) } })