export declare function assertInstanceOf<T>(name: string, mixed: any, clazz: {
    new (...args: any[]): T;
    name: string;
}): (T) | never;
export declare function assertInstanceOfHandler<T>(clazz: {
    new (...args: any[]): T;
    name: string;
}): (name: string, mixed: any) => (T) | never;