Run results for: spread vs iterator for getting first element

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/137.0.0.0 Safari/537.36

Browser: Chrome 137

Operating system: Linux

Device Platform: Desktop

Date tested: one year ago

iterator

92.6M/s

spread

57.4M/s

View exact numbers

Test name	Executions per second
✓ iterator	92,643,176 Ops/sec
spread	57,447,008 Ops/sec

HTML Preparation code:

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

Script Preparation code:

const elements = new Set(Array.from({length:10000},(i) => i));

Tests:

spread
const v = [...elements][0];
iterator
function first(iter){ for(const v of iter) return v; return undefined; } const v = first(elements);