export type AmplitudeState = {
    deviceId?: string;
    userId?: string;
};
export declare const parseAmplitudeCookie: (apiKey: string, newFormat?: boolean) => AmplitudeState | undefined;
export declare const parseAmplitudeLocalStorage: (apiKey: string) => AmplitudeState | undefined;
export declare const parseAmplitudeSessionStorage: (apiKey: string) => AmplitudeState | undefined;