export declare function assertOneOf<T>(name: string, mixed: any, arr: T[]): (T) | never;
export declare function assertOneOfHandler<T>(arr: T[]): (name: string, mixed: any) => (T) | never;
export declare function assertNotOneOf<T, NotT extends T>(name: string, mixed: any, arr: NotT[]): (T) | never;
export declare function assertNotOneOfHandler<T, NotT extends T>(arr: NotT[]): (name: string, mixed: any) => (T) | never;