export declare const GRAPHQL_FILTER_DECORATOR_METADATA_KEY = "GraphqlFilterDecorator";
export declare const FILTER_DECORATOR_OPTIONS_METADATA_KEY = "FilterPropertyDecoratorOptions";
export declare const FILTER_DECORATOR_INDEX_METADATA_KEY = "FilterPropertyDecoratorIndex";
export declare const FILTER_DECORATOR_CUSTOM_FIELDS_METADATA_KEY = "FilterCustomFieldsDecoratorOptions";
export declare const FILTER_OPERATION_PREFIX: string;