import { ProfilePointer } from "./pointers.js";
import { Filter } from "./filter.js";
export type SelectOptimalRelaysOptions = {
    /** Maximum number of connections (relays) to select */
    maxConnections: number;
    /** Cap the number of relays a user can have */
    maxRelaysPerUser?: number;
    /** Custom priority function for calculating relay scores.*/
    score?: (relay: string, coverage: number, popularity: number) => number;
};
/** Selects the optimal relays for a list of ProfilePointers */
export declare function selectOptimalRelays(users: ProfilePointer[], { maxConnections, maxRelaysPerUser, score }: SelectOptimalRelaysOptions): ProfilePointer[];
/** Sets relays for any user that has 0 relays */
export declare function setFallbackRelays(users: ProfilePointer[], fallbacks: string[]): ProfilePointer[];
/** Removes blacklisted relays from the user's relays */
export declare function removeBlacklistedRelays(users: ProfilePointer[], blacklist: string[]): ProfilePointer[];
/** A map of pubkeys by relay */
export type OutboxMap = Record<string, ProfilePointer[]>;
/** A map of filters by relay */
export type FilterMap = Record<string, Filter | Filter[]>;
/** Creates an {@link OutboxMap} for an array of profile points (groups users by relay) */
export declare function groupPubkeysByRelay(pointers: ProfilePointer[]): OutboxMap;
/** Alias for {@link groupPubkeysByRelay} */
export declare const createOutboxMap: typeof groupPubkeysByRelay;
/** Creates a {@link FilterMap} for an {@link OutboxMap} */
export declare function createFilterMap(outboxMap: OutboxMap, filter: Omit<Filter, "authors">): FilterMap;