Run results for: make map with entries vs for of

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/107.0.0.0 Safari/537.36

Browser: Chrome 107

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 2 years ago

Test name	Executions per second
map with entries	4.8 Ops/sec
map with for of	5.5 Ops/sec

Script Preparation code:

var arr = Array.from({length: 1000000}).map((_,i)=>({id: i}));

Tests:

map with entries
new Map(arr.entries())
map with for of
const m = new Map(); for (let item in arr) { m.set(item.id, item); }