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Run results for: toLocaleLowerCase vs collator

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Run details:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/126.0.0.0 Safari/537.36
Chrome 126
Mac OS X 10.15.7
Desktop
10 months ago
Test name Executions per second
toLocaleLowerCase (en-US) 6005858.5 Ops/sec
collator (en-US) 6010899.5 Ops/sec
toLocaleLowerCase (tr) 1388352.1 Ops/sec
collator (tr) 4917228.5 Ops/sec
Script Preparation code:
​x
 
var a = 'FOO BAR';
var b = 'foo bar';
​
var locale1 = 'en-US'
var locale2 = 'tr'
​
var collator1 = new Intl.Collator(locale1, { sensitivity: 'accent' });
var collator2 = new Intl.Collator(locale2, { sensitivity: 'accent' });
Tests:

  • toLocaleLowerCase (en-US)

     
    a.toLocaleLowerCase(locale1) === b.toLocaleLowerCase(locale1)

  • collator (en-US)

     
    collator1.compare(a, b) === 0

  • toLocaleLowerCase (tr)

     
    a.toLocaleLowerCase(locale2) === b.toLocaleLowerCase(locale2)

  • collator (tr)

     
    collator2.compare(a, b) === 0