Function biDiMarkText

packages/messageformat/src/bidi-mark-text.js:30–34

(text, locale)

 * @private
 */
export function biDiMarkText(text, locale) {
  const isLocaleRTL = rtlRegExp.test(locale);
  const mark = JSON.stringify(isLocaleRTL ? '\u200F' : '\u200E');
  return `${mark} + ${text} + ${mark}`;
}