```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 an integer greater than or equal to 3');
  }
  const length = text.length;
  return length <= limit
    ? text
    : text.slice(0, limit - 3) + '...';
}
```