Run results for: Proxy.ownKeys: fixed Array vs Array.from(Set) vs spread Set

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/151.0.0.0 Safari/537.36

Browser: Chrome 151

Operating system: Windows

Device Platform: Desktop

Date tested: 29 days ago

Benchmark engine: Benchmark.js

fixed Array

646K/s

Array.from(set)

628K/s

spread Set

616K/s

View exact numbers

Test name	Executions per second
✓ fixed Array	645,681 Ops/sec
Array.from(set)	628,453 Ops/sec
spread Set	615,978 Ops/sec

HTML Preparation code:

<!--your preparation HTML code goes here-->

Script Preparation code:

const obj = {A: 'A', B: 'B', C: 'C', D: 'D', E: 'E', F: 'F', G: 'G', H: 'H', I: 'I', J: 'J'};

const dataArray = ['A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J'];
const dataSet = new Set(dataArray);

const proxyFixedArray = new Proxy(obj, {
    ownKeys(t) {
        return dataArray;
    }
});
const proxySpreadSet = new Proxy(obj, {
    ownKeys(t) {
        return [...dataSet];
    }
});
const proxyArrayFromSet = new Proxy(obj, {
    ownKeys(t) {
        return Array.from(dataSet);
    }
});

Tests:

fixed Array
Object.keys(proxyFixedArray)
spread Set
Object.keys(proxySpreadSet)
Array.from(set)
Object.keys(proxyArrayFromSet)