export { isArray, isFunction, isObject, isString, isDate, isPromise, isSymbol, } from '@vue/shared';
export { isBoolean, isNumber } from '@vueuse/core';
export { isVNode } from 'vue';
export declare const isUndefined: (val: any) => val is undefined;
export declare const isEmpty: (val: unknown) => boolean;
export declare const isElement: (e: unknown) => e is Element;
export declare const tuple: <T extends string[]>(...args: T) => T;
export type DeepMutable<T> = T extends object ? {
    -readonly [key in keyof T]: T[key] extends object ? DeepMutable<T[key]> : T[key];
} : T;
export type Direction = 'horizontal' | 'vertical';