Function _removeLoneSurrogates

packages/core/src/logs/internal.ts:262–271

(str: string)

 * Exported for testing
 */
export function _removeLoneSurrogates(str: string): string {
  // isWellFormed/toWellFormed are ES2024 (not in our TS lib target), so we feature-detect via Object().
  const strObj: Record<string, Function> = Object(str);
  const isWellFormed = strObj['isWellFormed'];
  const toWellFormed = strObj['toWellFormed'];
  if (typeof isWellFormed === 'function' && typeof toWellFormed === 'function') {
    return isWellFormed.call(str) ? str : toWellFormed.call(str);
  }
  return str;
}