import type { EventEmitter } from 'expo-modules-core/types'; type AnyEventListener = (...args: any[]) => any; /** * Type helper that infers the event name from the emitter's events map. */ type InferEventName = TEventsMap extends Record ? TEventName : never; /** * Type helper that infers the event listener from the emitter's events map. */ type InferEventListener = TEventsMap extends Record ? TEventListener : never; /** * Type helper that infers the first parameter of the event listener. */ type InferEventParameter = TInitialValue extends Parameters[0] ? Parameters[0] : Parameters[0] | TInitialValue | null; /** * React hook that listens to events emitted by the given object. The returned value is an event parameter * that gets updated whenever a new event is dispatched. * @param eventEmitter An object that emits events. For example, a native module or shared object or an instance of [`EventEmitter`](#eventemitter). * @param eventName Name of the event to listen to. * @param initialValue An event parameter to use until the event is called for the first time. * @returns A parameter of the event listener. * @example * ```tsx * import { useEvent } from 'expo'; * import { VideoPlayer } from 'expo-video'; * * export function PlayerStatus({ videoPlayer }: { videoPlayer: VideoPlayer }) { * const { status } = useEvent(videoPlayer, 'statusChange', { status: videoPlayer.status }); * * return {`Player status: ${status}`}; * } * ``` */ export declare function useEvent, TEventName extends InferEventName, TEventListener extends InferEventListener, TInitialValue extends Parameters[0] | null>(eventEmitter: EventEmitter, eventName: TEventName, initialValue?: TInitialValue | null): InferEventParameter; /** * React hook that listens to events emitted by the given object and calls the listener function whenever a new event is dispatched. * The event listener is automatically added during the first render and removed when the component unmounts. * @param eventEmitter An object that emits events. For example, a native module or shared object or an instance of [`EventEmitter`](#eventemitter). * @param eventName Name of the event to listen to. * @param listener A function to call when the event is dispatched. * @example * ```tsx * import { useEventListener } from 'expo'; * import { useVideoPlayer, VideoView } from 'expo-video'; * * export function VideoPlayerView() { * const player = useVideoPlayer(videoSource); * * useEventListener(player, 'playingChange', ({ isPlaying }) => { * console.log('Player is playing:', isPlaying); * }); * * return ; * } * ``` */ export declare function useEventListener, TEventName extends InferEventName, TEventListener extends InferEventListener>(eventEmitter: EventEmitter, eventName: TEventName, listener: TEventListener): void; export {}; //# sourceMappingURL=useEvent.d.ts.map