/**
 * Processes the passed character set data and returns a flattened array of all the characters.
 *
 * Ignored because not directly exposed.
 * @ignore
 * @param {string | string[] | string[][] } chars
 * @returns {string[]} the flattened array of characters
 */
export declare function resolveCharacters(chars: string | (string | string[])[]): string[];
