The getTextInfo() method of Intl.Locale instances returns the ordering of characters indicated by either ltr (left-to-right) or by rtl (right-to-left) for this locale.
Note: In some versions of some browsers, this method was implemented as an accessor property called textInfo. However, because it returns a new object on each access, it is now implemented as a method to prevent the situation of locale.textInfo === locale.textInfo returning false. Check the browser compatibility table for details.