Truncate String

1/**
2 * Truncates a string to a given length and appends an ellipsis ("...") if necessary.
3 *
4 * @param str - The input string.
5 * @param length - The maximum length of the string.
6 * @returns The truncated string with "..." if it exceeded the limit.
7 *
8 * @example
9 * truncate("Hello TypeScript World", 10); // "Hello Type..."
10 */
11export function truncateString(str: string, length: number): string {
12  return str.length > length ? `${str.slice(0, length)}...` : str;
13}