import type { Channel, ChannelSort, ChannelSortBase } from 'stream-chat';
import type { ChannelListProps } from './ChannelList';
type MoveChannelUpParams = {
    channels: Array<Channel>;
    cid: string;
    activeChannel?: Channel;
};
/**
 * @deprecated
 */
export declare const moveChannelUp: ({ activeChannel, channels, cid }: MoveChannelUpParams) => Channel[];
/**
 * Expects channel array sorted by `{ pinned_at: -1 }`.
 *
 * TODO: add support for the `{ pinned_at: 1 }`
 */
export declare function findLastPinnedChannelIndex({ channels }: {
    channels: Channel[];
}): number | null;
type MoveChannelUpwardsParams = {
    channels: Array<Channel>;
    channelToMove: Channel;
    sort: ChannelSort;
    /**
     * 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: ({ channels, channelToMove, channelToMoveIndexWithinChannels, sort, }: MoveChannelUpwardsParams) => Channel[];
/**
 * 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: (sort: ChannelListProps['sort']) => boolean;
export declare const extractSortValue: ({ atIndex, sort, targetKey, }: {
    atIndex: number;
    targetKey: keyof ChannelSortBase;
    sort?: ChannelListProps['sort'];
}) => import("stream-chat").AscDesc | null;
/**
 * Returns `true` only if `archived` property is of type `boolean` within `filters` object.
 */
export declare const shouldConsiderArchivedChannels: (filters: ChannelListProps['filters']) => boolean;
/**
 * Returns `true` only if `pinned_at` property is of type `string` within `membership` object.
 */
export declare const isChannelPinned: (channel: Channel) => boolean;
/**
 * Returns `true` only if `archived_at` property is of type `string` within `membership` object.
 */
export declare const isChannelArchived: (channel: Channel) => boolean;
export {};