import { type ControlRequestClaimDatabase, type ControlRequestClaimStatus } from './control-request.repository';
import { approvalResource, type ApprovalRow } from './approval.schema';
export type ApprovalClaimStatus = ControlRequestClaimStatus;
export interface ApprovalClaimRequest {
    /** Full ApprovalRequest IRI. Subscribe/watch envelopes should pass as:object. */
    approval: string;
    leaseOwner: string;
    leaseDurationMs?: number;
    now?: Date | string | number;
}
export interface ApprovalClaimResult {
    status: ApprovalClaimStatus;
    approval: ApprovalRow | null;
    leaseOwner: string;
    leaseExpiresAt: string;
    reason?: string;
}
export type ApprovalClaimDatabase = ControlRequestClaimDatabase<typeof approvalResource>;
export declare function claimApprovalRequest(db: ApprovalClaimDatabase, input: ApprovalClaimRequest): Promise<ApprovalClaimResult>;
export declare function isApprovalStatusClaimable(status: unknown): boolean;