export type EventSubscription = {
    remove: () => void;
};
export type BasicVoltraEvent = {
    source: string;
    timestamp: number;
};
export type VoltraActivityState = 'active' | 'dismissed' | 'pending' | 'stale' | 'ended' | string;
export type VoltraActivityTokenReceivedEvent = BasicVoltraEvent & {
    type: 'activityTokenReceived';
    activityName: string;
    pushToken: string;
};
export type VoltraActivityPushToStartTokenReceivedEvent = BasicVoltraEvent & {
    type: 'activityPushToStartTokenReceived';
    pushToStartToken: string;
};
export type VoltraActivityUpdateEvent = BasicVoltraEvent & {
    type: 'stateChange';
    activityName: string;
    activityState: VoltraActivityState;
};
export type VoltraInteractionEvent = BasicVoltraEvent & {
    type: 'interaction';
    identifier: string;
    payload: string;
};
export type VoltraEventMap = {
    activityTokenReceived: VoltraActivityTokenReceivedEvent;
    activityPushToStartTokenReceived: VoltraActivityPushToStartTokenReceivedEvent;
    stateChange: VoltraActivityUpdateEvent;
    interaction: VoltraInteractionEvent;
};
export declare function addVoltraListener<K extends keyof VoltraEventMap>(event: K, listener: (event: VoltraEventMap[K]) => void): EventSubscription;
//# sourceMappingURL=events.d.ts.map