export declare function assert(message: string, ...rules: boolean[]): void;
export declare function empty(exp: any[] | {
    [key: string]: any;
}): boolean;
export declare function length(exp: any[] | {
    [key: string]: any;
}): number;
export declare function notEmpty(exp: any[] | {
    [key: string]: any;
}): boolean;
export declare function throwError(message: string): never;