import type { LogParams } from '../../types/internal';
/**
 * Asserts that the value is not `null`.
 */
export declare function assertValueIsNotNull<Type>(value: Type, check: string, payload?: LogParams): asserts value is Exclude<Type, null>;
/**
 * Asserts that the value is `null`.
 */
export declare function assertValueIsNull<Type>(value: Type, check: string, payload?: LogParams): asserts value is null & Type;