```
/** The text, cut to limit characters with an ellipsis when it is longer. */
export function truncate(text: string, limit: number): string {
  if (typeof limit !== 'number' || limit < 3) {
    throw new Error("Limit must be a positive integer of at least 3");
  }
  
  if (text === "" || text.length <= limit) {
    return text;
  }

  const ellipsis = "...";
  return text.slice(0, limit - ellipsis.length) + ellipsis;
}
```