import { HMSPeerID, HMSRoleName } from '@100mslive/hms-video-store';
import { hooksErrHandler } from './types';
export interface useCustomEventInput<T> {
    /**
     * type of the event, for example, MODERATOR_EVENT, EMOJI_REACTIONS etc.
     */
    type: string;
    /**
     * the handler function for when the custom event comes. It's recommended
     * to use `useCallback` for the function passed in here for performance
     * reasons.
     * The callback is optional in case you want to decouple sending event and
     * handling event in the UI.
     */
    onEvent?: (data: T) => void;
    /**
     * flag to treat event payload as json.
     * If true, the payload will be stringified before sending and
     * parsed before calling the onEvent handler function.
     *
     * Set it to `false` if you want to send/receive only string messages
     *
     * Set it to `true` if you want to send/receive objects
     *
     * default value is true
     */
    json?: boolean;
    /**
     * function to handle errors happening during sending the event
     */
    handleError?: hooksErrHandler;
}
export interface EventReceiver {
    peerId?: HMSPeerID;
    roleNames?: HMSRoleName[];
}
export interface useCustomEventResult<T> {
    /**
     * sends the event data to others in the room who will receive it in onEvent
     *
     * @example to send message to peers of specific roles
     * ```js
     * sendEvent(data, {roleNames: ['host','guest']})
     * ```
     *
     * @example to send message to single peer
     * ```js
     * sendEvent(data, {peerId})
     * ```
     */
    sendEvent: (data: T, receiver?: EventReceiver) => void;
}
/**
 * A generic function to implement [custom events](https://www.100ms.live/docs/javascript/v2/features/chat#custom-events) in your UI.
 * The data to be sent to remote is expected to be a serializable JSON. The serialization
 * and deserialization is taken care of by the hook.
 */
export declare const useCustomEvent: <T>({ type, json, onEvent, handleError, }: useCustomEventInput<T>) => useCustomEventResult<T>;