I test this code on some browser and found the difference:

console.log(new Intl.NumberFormat('en', { style: 'currency', currency: 'USD' }).format(123456.789))

• Chrome and Edge : $123,456.79.
• Safari 14 and lower: $123,456.79
• Safari 15: US$123,456.79

Why on Safari 15 we have a difference result ? And how we change it same Chrome and Edge ? Thanks you