/** modal 实例上不可被 custom 覆盖的内置属性名 */
export declare const MODAL_BUILTIN_KEYS: readonly ["visible", "data", "props", "options", "modalOptions", "modalPromise", "modal", "endModal", "cancelModal", "beforeModal", "init", "afterModal", "beforeCloseModal", "afterCloseModal"];
export type ModalBuiltinKey = typeof MODAL_BUILTIN_KEYS[number];
declare const MODAL_BUILTIN_KEY_SET: Set<string>;
/**
 * 判断键名是否为 modal 内置属性。
 * @param key - 待检查的键名
 * @returns 是否为内置属性
 */
declare function isModalBuiltinKey(key: string): key is ModalBuiltinKey;
export { MODAL_BUILTIN_KEY_SET, isModalBuiltinKey, };