import type { CacheControlMetadata, FilterPredicate } from '@conduit-client/service-cache/v1';
interface LogicalOperators<T> {
    $and?: T[];
    $or?: T[];
    $not?: T;
}
export type CacheKeyQueryOperands = {
    $regex: RegExp;
};
export type CacheMetadataQueryOperands = LogicalOperators<CacheMetadataQueryOperands> | {
    cacheControlType: {
        $eq: 'max-age' | 'stale-while-revalidate' | 'no-cache' | 'no-store';
    };
} | {
    maxAge: {
        $gte?: number;
        $lte?: number;
    };
};
export type CacheValueQueryOperands = never;
export type CacheQuery = LogicalOperators<CacheQuery> | {
    key: CacheKeyQueryOperands;
} | {
    metadata: CacheMetadataQueryOperands;
} | {
    value: CacheValueQueryOperands;
};
export declare const isAndQuery: (query: CacheQuery) => query is {
    $and: CacheQuery[];
};
export declare const isOrQuery: (query: CacheQuery) => query is {
    $or: CacheQuery[];
};
export declare const isNotQuery: (query: CacheQuery) => query is {
    $not: CacheQuery;
};
export declare const matchesMetadata: (metadataQuery: CacheMetadataQueryOperands, cacheControl: CacheControlMetadata) => boolean;
export declare function queryToPredicate(query: CacheQuery): FilterPredicate;
export {};