Run results for: Performance of Object.keys(tree).map(Number) vs for...in

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/83.0.4103.116 Safari/537.36

Browser: Chrome 83

Operating system: Linux

Device Platform: Desktop

Date tested: 3 years ago

Test name	Executions per second
Object.keys(tree).map(Number)	950968.1 Ops/sec
for...in	480085.1 Ops/sec

Script Preparation code:

var a = { 1: '1', 2: '2', 3: '3'};

Tests: