import { BaseServiceError } from "../../types/errors/ServiceError.js";
import type { DeployParams } from "../../types/params.js";
/**
 * The deployment's lease was denied at a stack boundary (§5.3): the server has
 * released or superseded this deployment (cancelled, swept, adopted by another
 * runner, or force-released) while the engine was mid-flight. The engine aborts
 * BEFORE starting the named stack's first mutating CloudFormation operation —
 * already-completed stacks stand. The message is surface-neutral (no CLI flags
 * or commands) and built from static literals + the stack name, so there is
 * nothing to mask.
 */
export declare class LeaseDeniedError extends BaseServiceError {
    readonly stackName: string;
    constructor(message: string, stackName: string);
}
/** Which mutating operation the gate protects — drives the denial wording. */
export type LeaseGateOperation = "deploy" | "destroy";
/**
 * Stack-boundary lease gate (§5.3). Called immediately before a stack's first
 * mutating CloudFormation operation. Returns a typed {@link LeaseDeniedError}
 * when the lease is denied (the caller must abort without starting the stack),
 * or `undefined` when the deploy may proceed.
 *
 * Consumes the resolved gate resolver + shutdown signal rather than the whole
 * `DeployParams`. Fails OPEN: a `"unknown"` verdict (the liveness probe could
 * not reach the server) proceeds, because a lease is a liveness signal and
 * CloudFormation's own ClientRequestToken is the fencing backstop. An absent
 * resolver is a no-op gate.
 */
export declare function assertLeaseBeforeStack(assertLeaseForStack: DeployParams["assertLeaseForStack"], stackName: string, abortSignal?: AbortSignal, operation?: LeaseGateOperation): Promise<LeaseDeniedError | undefined>;