export declare const banUnknownProperties: (ban: boolean, object: any) => any;
export declare const allowNullable: (allow: boolean, object: any, rule: (obj: any) => boolean) => any;
export declare const allowNullableProperties: (allow: boolean, object: any) => any;
export declare const allowNullableObjects: (allow: boolean, object: any) => any;
export declare const getProperties: (object: any) => string[];