import { UpdateFilter } from "mongodb";
import type { ChannelCache } from "../../types/niche.types.js";
export declare class NicheRepository {
    private readonly CHANNELS_CACHE_COLLECTION;
    findChannelsByIds(ids: string[]): Promise<ChannelCache[]>;
    updateChannel(channelId: string, updates: UpdateFilter<ChannelCache>): Promise<void>;
}