getLocaleDirection

getLocaleDirection(locale) returns text direction for a locale tag:

• 'rtl' for right-to-left locales
• 'ltr' for left-to-right locales

This function uses `Intl.Locale`.

1import { getLocaleDirection } from '@beforesemicolon/intl'2 3getLocaleDirection('en-US') // "ltr"4getLocaleDirection('ar') // "rtl"5getLocaleDirection('fa') // "rtl"6getLocaleDirection('zh-Hant') // "ltr"

Signature

1function getLocaleDirection(locale: string): 'ltr' | 'rtl'

Practical notes

• invalid locale values return 'ltr' instead of throwing
• this is useful for pre-setting dir before runtime loading completes
• call this whenever you need a deterministic fallback while a runtime settles

1document.documentElement.dir = getLocaleDirection(selectedLocale)