import type { HashedEvent, TrustedEvent } from "./Events.js";
export declare const EPOCH = 1609459200;
export declare const neverFilter: {
    ids: never[];
};
export type Filter = {
    ids?: string[];
    kinds?: number[];
    authors?: string[];
    since?: number;
    until?: number;
    limit?: number;
    search?: string;
    [key: `#${string}`]: string[];
};
export declare const matchFilter: <E extends HashedEvent>(filter: Filter, event: E) => boolean;
export declare const matchFilters: <E extends HashedEvent>(filters: Filter[], event: E) => boolean;
export declare const getFilterId: (filter: Filter) => string;
export declare const calculateFilterGroup: ({ since, until, limit, search, ...filter }: Filter) => string;
export declare const unionFilters: (filters: Filter[]) => Filter[];
export declare const intersectFilters: (groups: Filter[][]) => Filter[];
export declare const getIdFilters: (idsOrAddresses: string[]) => Filter[];
export declare const getReplyFilters: (events: TrustedEvent[], filter?: Filter) => ({
    "#a": string[];
    ids?: string[];
    kinds?: number[];
    authors?: string[];
    since?: number;
    until?: number;
    limit?: number;
    search?: string;
} | {
    "#e": string[];
    ids?: string[];
    kinds?: number[];
    authors?: string[];
    since?: number;
    until?: number;
    limit?: number;
    search?: string;
})[];
export declare const addRepostFilters: (filters: Filter[]) => Filter[];
export declare const getFilterGenerality: (filter: Filter) => number;
export declare const guessFilterDelta: (filters: Filter[], max?: number) => number;
export declare const getFilterResultCardinality: (filter: Filter) => number | undefined;
export declare const trimFilter: (filter: Filter) => Filter;
export declare const trimFilters: (filters: Filter[]) => Filter[];
//# sourceMappingURL=Filters.d.ts.map