export interface ClaimFailureBackoff {
    isDue(): boolean;
    recordFailure(): number;
    reset(): void;
}
export interface ClaimFailureBackoffOptions {
    now: () => number;
    random?: () => number;
    baseDelayMs?: number;
    maxDelayMs?: number;
    jitterRatio?: number;
}
/** Global queue-claim pacing shared by every worker slot. */
export declare function createClaimFailureBackoff(options: ClaimFailureBackoffOptions): ClaimFailureBackoff;
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