type MetersPerSecond = number;
type Degrees = number;
type Meters = number;
type BeatsPerMinute = number;
type Steps = number;
type Watts = number;
type Location = {
    latitude: Degrees;
    longitude: Degrees;
};
type PublicLocation = Location & {
    reportedAt: number;
};
type UUID = string;
export type ConnectionOptions = {
    /**
     * Forces Firebase Realtime Database to use WebSockets instead of falling back
     * to long polling. This must be set before the first database listener is
     * created.
     */
    forceWebSockets?: boolean;
};
export declare function addLocationListener(pullKey: string, callback: (location: Location) => void, options?: ConnectionOptions): import("@firebase/database").Unsubscribe;
export declare function addSpeedListener(pullKey: string, callback: (speed: MetersPerSecond) => void, options?: ConnectionOptions): import("@firebase/database").Unsubscribe;
export declare function addHeadingListener(pullKey: string, callback: (heading: Degrees) => void, options?: ConnectionOptions): import("@firebase/database").Unsubscribe;
export declare function addAltitudeListener(pullKey: string, callback: (altitude: Meters) => void, options?: ConnectionOptions): import("@firebase/database").Unsubscribe;
export declare function addSessionIdListener(pullKey: string, callback: (sessionId: UUID | null) => void, options?: ConnectionOptions): import("@firebase/database").Unsubscribe;
/** Creates a listener source for a streamer's private data with a pull key. */
export declare function forPullKey(pullKey: string, options?: ConnectionOptions): {
    addLocationListener(callback: (location: Location) => void): import("@firebase/database").Unsubscribe;
    addSpeedListener(callback: (speed: MetersPerSecond) => void): import("@firebase/database").Unsubscribe;
    addHeadingListener(callback: (heading: Degrees) => void): import("@firebase/database").Unsubscribe;
    addAltitudeListener(callback: (altitude: Meters) => void): import("@firebase/database").Unsubscribe;
    addHeartRateListener(callback: (altitude: BeatsPerMinute) => void): import("@firebase/database").Unsubscribe;
    addCyclingPowerListener(callback: (power: Watts) => void): import("@firebase/database").Unsubscribe;
    addCyclingCrankListener(callback: (power: Watts) => void): import("@firebase/database").Unsubscribe;
    addCyclingWheelListener(callback: (power: Watts) => void): import("@firebase/database").Unsubscribe;
    /**
     * This listener reports the number of steps taken so far. Note that this
     * number does not reset when the streamer goes offline. It is up to the
     * client to reset the number when the streamer goes offline or online.
     * Instead, the number is reported as the total number of steps taken since
     * an arbitrary point in time, and guaranteed to be monotonically increasing
     * for a given session id.
     */
    addPedometerStepsListener(callback: (steps: Steps) => void): import("@firebase/database").Unsubscribe;
    /**
     * This listener is useful for accessing unstructured data associated with
     * the pull key. It includes the above fields as well as other fields such
     * as bluetooth heart rate or telemetry data.
     */
    addListener(callback: (data: any) => void): import("@firebase/database").Unsubscribe;
    /**
     * This listener detects changes in the active session id. When a streamer
     * goes online, a new session id is created and this listener is triggered.
     * null sessionId's indicate the streamer is offline. Note that it is
     * possible for two sequential non-null sessionIds to be sent.
     */
    addSessionIdListener(callback: (sessionId: UUID | null) => void): import("@firebase/database").Unsubscribe;
};
/** Creates a listener source for a streamer's public data. */
export declare function forStreamer(provider: "twitch", userId: string, options?: ConnectionOptions): {
    /** If the public location is hidden (eg streamer is offline), null is passed. */
    addLocationListener(callback: (location: PublicLocation | null) => void): import("@firebase/database").Unsubscribe;
};
export {};