Run results for: Number.toLocaleString vs Intl.NumberFormat vs Regex

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 15_6_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/15.6.1 Mobile/15E148 Safari/604.1

Browser: Mobile Safari 15

Operating system: iOS 15.6.1

Device Platform: Mobile

Date tested: one year ago

Test name	Executions per second
Intl.NumberFormat	20623.9 Ops/sec
Number.toLocaleString	20663.8 Ops/sec
Regex	36066328.0 Ops/sec

Tests:

Intl.NumberFormat
const currencyPlayNumber = 1; const translatedString = new Intl.NumberFormat(undefined, { style: 'currency', currency: 'RUB', }).format(currencyPlayNumber);
Number.toLocaleString
const currencyPlayNumber = 1; const translatedString = currencyPlayNumber.toLocaleString(undefined, { style: 'currency', currency: 'RUB', })
Regex
const currencyPlayNumber = 1; const translatedString = `${currencyPlayNumber}`.replace(/\B(?=(\d{3})+(?!\d))/g, ',');