import { ClassConstructor } from './ClassConstructor';
import { ValidationException } from './ValidationException';
/**
 * Is the value an instance of the provided constructor?
 * See: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/instanceof
 * See: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Data_structures
 *
 * @example
 * ```ts
 * isInstanceOf(Number, 1) // true
 * isInstanceOf(String, 1) // false
 * ```
 *
 * @param ctor the constructor to check the value against
 * @param value the value to check
 * @returns a boolean indicating whether the value is the expected type
 */
export declare const isInstanceOf: <T>(ctor: ClassConstructor<T>, value: unknown | T) => value is T;
/**
 * Validate that the value is an instance of the provided constructor.
 * See: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/instanceof
 * See: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Data_structures
 *
 * @example
 * ```ts
 * validateInstanceOf(Number, 1) // null
 * validateInstanceOf(String, 1) // ValidationException
 * ```
 *
 * @param ctor the constructor to check the value against
 * @param value the value to check
 * @returns `null` if the value is the expected type or a `ValidationException`
 * if not
 */
export declare const validateInstanceOf: <T>(ctor: ClassConstructor<T>, value: unknown | T) => ValidationException | null;
/**
 * Assert that the value is an instance of the provided constructor.
 * See: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/instanceof
 * See: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Data_structures
 *
 * @example
 * ```ts
 * assertInstanceOf(Number, 1) // void
 * assertInstanceOf(String, 1) // throws AssertionException
 * ```
 *
 * @param ctor the constructor to check the value against
 * @param value the value to check
 * @throws an `AssertionException` if the value is not the expected type
 */
export declare function assertInstanceOf<T>(ctor: ClassConstructor<T>, value: unknown | T): asserts value is T;