Run results for: create temp object vs Object.fromEntries #2

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.77 Safari/537.36

Browser: Chrome 91

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 2 years ago

Test name	Executions per second
Object.fromEntries	925.2 Ops/sec
creating temporary objects	1578.6 Ops/sec

Script Preparation code:

var array = Array.from(Array(10000).keys()).map(i => {
    var length = Math.round(Math.random()*100)
    var result           = '';
    var characters       = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789';
    var charactersLength = characters.length;
    for ( var i = 0; i < length; i++ ) {
      result += characters.charAt(Math.floor(Math.random() * 
 charactersLength));
   }
   return result;
})

Tests:

Object.fromEntries
Object.fromEntries(array.map(value => [value, true]));
creating temporary objects
const data = {} array.forEach(value => data[value] = true);

Run results for: create temp object vs Object.fromEntries #2

Object.fromEntries

creating temporary objects