Capitalize

1/**
2 * Capitalizes the first character of a string.
3 *
4 * @param str - The input string.
5 * @returns The string with the first character uppercased.
6 *
7 * @example
8 * capitalize("typescript"); // "Typescript"
9 */
10export function capitalize(str: string): string {
11  if (!str) return '';
12  return str.charAt(0).toUpperCase() + str.slice(1);
13}