Run results for: Object.values on array vs Object

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/83.0.4103.97 Safari/537.36

Browser: Chrome 83

Operating system: Windows

Device Platform: Desktop

Date tested: 3 years ago

Test name	Executions per second
a	1123274.0 Ops/sec
o	145522.1 Ops/sec
ac	1448305.0 Ops/sec
oc	137410.3 Ops/sec

Script Preparation code:

var obj = {}
for(let i = 0; i < 50; ++i) {
  let k = String.fromCharCode((i % 26) + 97);
  obj[k] = i;
}

var arr = Object.values(obj);
var dest = null;

Tests:

a
dest = Object.values(arr);
o
dest = Object.values(obj);
ac
if( Array.isArray(arr) ) { dest = arr; } else { dest = Object.values(arr); }
oc
if( Array.isArray(obj) ) { dest = obj; } else { dest = Object.values(obj); }

Run results for: Object.values on array vs Object

Is it significantly better to do Object.values(<array or object>) or if( Array.isArray(<array or object>) ) { array = <array or object> } else { Object.values(obj) }

a

o

ac

oc