export interface ActiveFormSession {
    token: string;
    clientId: string;
    startedAt: Date;
    expiresAt: Date;
}
export declare function claimSession(clientId: string): ActiveFormSession;
export declare function releaseSession(): void;
export declare function isSessionActive(): boolean;
export declare function validateSessionToken(token: string): boolean;
export declare function getActiveSession(): ActiveFormSession | null;
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