/**
 * Creates a unique id with letters, numbers, but no spaces or special characters. By default, the length is 6 characters. Works in the browser and NodeJS (and other runtimes). Handy, but not cryptographically secure.
 *
 *
 * @example
 * Basic usage
 * ```js
 * // Generate a default length id
 * const id = getId();
 * console.log(id); // e.g., 'a1B2c3'
 * ```
 *
 * @example
 * Custom length id
 * ```js
 * const id = getId(10);
 * console.log(id); // e.g., 'a1B2c3D4e5'
 * ```
 *
 * @param length - The length of the generated id. Default is 6.
 */
export default function getId(length?: number): string;