```ts
/** 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 at least 3");
  }
  
  if (text.length < limit) {
    return text;
  }
  
  return text.slice(0, limit - 3) + "...";
}
```