import type { Channel, ChannelSort, ChannelSortBase, ExtendableGenerics } from 'stream-chat';
import type { DefaultStreamChatGenerics } from '../../types/types';
import type { ChannelListProps } from './ChannelList';
export declare const MAX_QUERY_CHANNELS_LIMIT = 30;
type MoveChannelUpParams<SCG extends DefaultStreamChatGenerics = DefaultStreamChatGenerics> = {
    channels: Array<Channel<SCG>>;
    cid: string;
    activeChannel?: Channel<SCG>;
};
/**
 * @deprecated
 */
export declare const moveChannelUp: <SCG extends DefaultStreamChatGenerics = DefaultStreamChatGenerics>({ activeChannel, channels, cid, }: MoveChannelUpParams<SCG>) => Channel<SCG>[];
/**
 * Expects channel array sorted by `{ pinned_at: -1 }`.
 *
 * TODO: add support for the `{ pinned_at: 1 }`
 */
export declare function findLastPinnedChannelIndex<SCG extends ExtendableGenerics>({ channels, }: {
    channels: Channel<SCG>[];
}): number | null;
type MoveChannelUpwardsParams<SCG extends DefaultStreamChatGenerics = DefaultStreamChatGenerics> = {
    channels: Array<Channel<SCG>>;
    channelToMove: Channel<SCG>;
    sort: ChannelSort<SCG>;
    /**
     * If the index of the channel within `channels` list which is being moved upwards
     * (`channelToMove`) is known, you can supply it to skip extra calculation.
     */
    channelToMoveIndexWithinChannels?: number;
};
export declare const moveChannelUpwards: <SCG extends DefaultStreamChatGenerics = DefaultStreamChatGenerics>({ channels, channelToMove, channelToMoveIndexWithinChannels, sort, }: MoveChannelUpwardsParams<SCG>) => Channel<SCG>[];
/**
 * Returns `true` only if object with `pinned_at` property is first within the `sort` array
 * or if `pinned_at` key of the `sort` object gets picked first when using `for...in` looping mechanism
 * and value of the `pinned_at` is either `1` or `-1`.
 */
export declare const shouldConsiderPinnedChannels: <SCG extends ExtendableGenerics>(sort: ChannelListProps<SCG>['sort']) => boolean;
export declare const extractSortValue: <SCG extends ExtendableGenerics>({ atIndex, sort, targetKey, }: {
    atIndex: number;
    targetKey: keyof ChannelSortBase<SCG>;
    sort?: ChannelListProps<SCG>['sort'];
}) => NonNullable<ChannelSortBase<SCG>["created_at" | "pinned_at" | "updated_at" | keyof SCG["channelType"] | "has_unread" | "last_message_at" | "last_updated" | "member_count" | "unread_count"]> | null;
/**
 * Returns `true` only if `archived` property is of type `boolean` within `filters` object.
 */
export declare const shouldConsiderArchivedChannels: <SCG extends ExtendableGenerics>(filters: ChannelListProps<SCG>['filters']) => boolean;
/**
 * Returns `true` only if `pinned_at` property is of type `string` within `membership` object.
 */
export declare const isChannelPinned: <SCG extends ExtendableGenerics>(channel: Channel<SCG>) => boolean;
/**
 * Returns `true` only if `archived_at` property is of type `string` within `membership` object.
 */
export declare const isChannelArchived: <SCG extends ExtendableGenerics>(channel: Channel<SCG>) => boolean;
export {};