/**
 * Sets the base path for the application.
 * @param {string} path The base path to be set.
 * @returns {void} This function does not return anything.
 */
export function setBasePath(path: string): void;
/**
 * Returns the base path of the application, optionally appending a specified relative path.
 * If the base path has not been set, it determines the base path from the first script element
 * with a `base-path` attribute or generates it based on the current script location.
 * @param {string} [appendedPath] The relative path to append to the base path. Defaults to an empty string.
 * @returns {string} The complete base path, with the appended relative path if specified.
 */
export function getBasePath(appendedPath?: string): string;