export interface AppStateEvent {
    [key: string]: unknown;
    source: "app-state";
    type: "change" | "delete";
    key: string;
    owner?: string;
    requestSource?: string;
}
export type AppStateEventListener = (event: AppStateEvent) => void;
export interface AppStateEmitter {
    on(event: "app-state", listener: AppStateEventListener): this;
    off(event: "app-state", listener: AppStateEventListener): this;
    removeListener(event: "app-state", listener: AppStateEventListener): this;
    emit(event: "app-state", payload: AppStateEvent): boolean;
}
export declare function getAppStateEmitter(): AppStateEmitter;
export declare function emitAppStateChange(key: string, requestSource?: string, owner?: string): void;
export declare function emitAppStateDelete(key: string, requestSource?: string, owner?: string): void;
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