export declare class PatternProperties {
    keywords: Set<string>;
    patternProperties: {};
    matchingPropertyKeys: any[];
    addObject(object: Record<string, unknown>): void;
    addSchema(schema: Record<string, any>): void;
    toSchema(): {
        patternProperties?: undefined;
    } | {
        patternProperties: {};
    };
    findPattern(prop: string): string;
    filterProperties(properties: Record<string, any>): any;
    private propertiesToSchema;
}