Run results for: Array vs UInt8Array resizing

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/18.1.1 Safari/605.1.15

Browser: Safari 18

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

Uint8Array

1K/s

Array

639/s

View exact numbers

Test name	Executions per second
✓ Uint8Array	1,097 Ops/sec
Array	639 Ops/sec

Script Preparation code:

c = new Uint8Array([255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255])

Tests:

Uint8Array
let stream = new Uint8Array() let a = 1000 while (a --> 0) { const buf = new Uint8Array(stream.length + c.length); buf.set(stream, 0); buf.set(c, stream.length); stream = buf; }
Array
let stream = [] let a = 1000 const push = Array.prototype.push; while (a --> 0) { push.apply(stream, c) new Uint8Array(stream) }