export type DeadTabRecoveryConsumeStatus = "consumed" | "expired_or_missing" | "owner_mismatch";
export interface DeadTabRecoveryConsumeResult<T> {
    status: DeadTabRecoveryConsumeStatus;
    descriptor?: T;
}
interface DeadTabRecoveryDeps {
    now(): number;
    onPeek(): void;
}
/** Store a short-lived immutable recovery descriptor for a dead tab worker. */
export declare function registerDeadTabRecovery<T extends object>(name: string, ownerId: string | undefined, descriptor: T, ttlMs?: number): void;
/**
 * Check whether a recovery descriptor may be consumed by this owner. The test hook is
 * intentionally synchronous: recovery must not yield between this check and consume.
 */
export declare function peekDeadTabRecovery<T>(name: string, ownerId: string | undefined): DeadTabRecoveryConsumeResult<T>;
/** Consume only a live descriptor belonging to the expected owner. */
export declare function consumeDeadTabRecovery<T>(name: string, ownerId: string | undefined): DeadTabRecoveryConsumeResult<T>;
export declare function discardDeadTabRecovery(name: string): void;
/** Whether an unconsumed descriptor remains live at the supplied policy clock. */
export declare function isDeadTabRecoveryLive(name: string, now: number): boolean;
export declare function __setDeadTabRecoveryDepsForTest(overrides: Partial<DeadTabRecoveryDeps>): void;
export declare function __resetDeadTabRecoveryForTest(): void;
export {};