export declare class SessionManager {
    private static _lastSessionTime;
    private static _sdkConfiguration;
    private static _storageSaverIntervalId;
    static initialize(): Promise<void>;
    static saveLastSessionTime(): Promise<void>;
    static onWindowFocus(): void;
    static onWindowUnfocus(): void;
    private static _isSessionExpired;
    private static _maybeStartSession;
    private static _maybeRefreshSession;
    private static _initializePushManager;
    private static _initializeInternal;
}
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