/**
 * Creates a Globally Unique Identifier in the form xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx,
 * where each x is replaced with a hexadecimal digit from 0 to f, and y is replaced with a
 * hexadecimal digit from 8 to b. This is not compatible with DOM ids, which must
 * start with a letter.
 *
 * @returns {String}
 * @public
 */
export declare function createGUID(): string;
/**
 * Creates a Globally Unique Identifier prefixed with one or more letters to create a valid DOM id.
 *
 * @param {String} [prefix=id] A prefix, which must start with a letter and may only contain
 * letters, digits, hyphens, and underscores.
 * @returns {String}
 * @public
 */
export declare function createDOMID(prefix?: string): string;