Run results for: test-string

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:75.0) Gecko/20100101 Firefox/75.0

Browser: Firefox 75

Operating system: Windows

Device Platform: Desktop

Date tested: 4 years ago

Test name	Executions per second
array	1329793.1 Ops/sec
obj.assign	184583.0 Ops/sec

Tests:

array
String.prototype.replaceAt=function(index, char) { var a = this.split(""); a[index] = char; return a.join(""); } 'abcde'.replaceAt(2,'a')
obj.assign
String.prototype.replaceAt = Object.freeze(function(index, char) { return Object.assign([...this], {[index]: char}).join(``); }); 'abcde'.replaceAt(2,'a')