import { Class } from "./types";
/**
 * check if `value` is `Class` object
 *
 * the `Function` will return `false`
 *
 * @since 5.15.0
 * @category Lang
 *
 * @param obj
 *
 * ```js
 * class A {}
 * function a() {}
 * isClass(A) // => true
 * isClass(a) // => false
 * ```
 */
export declare function isClass(obj: any): obj is Class;
/**
 * check a class is native class or not
 * @category Lang
 * @since 5.18.0
 * @param c class type
 */
export declare function isNativeClass(c: Class<any>): boolean;