import type { Channel, EventTypes } from 'stream-chat';
export declare function useSelectedChannelState<O>(_: {
    channel: Channel;
    selector: (channel: Channel) => O;
    stateChangeEventKeys?: EventTypes[];
}): O;
export declare function useSelectedChannelState<O>(_: {
    selector: (channel: Channel) => O;
    channel?: Channel | undefined;
    stateChangeEventKeys?: EventTypes[];
}): O | undefined;