```ts
/** The text, cut to limit characters with an ellipsis when it is longer. */
export function truncate(text: string, limit: number): string {
  if (!Number.isInteger(limit) || limit < 3) {
    throw new Error("limit should be an integer of at least 3");
  }
  return text.length > limit
    ? text.slice(0, limit - 4) + "..."
    : text;
}
```