import type { ServiceDeploymentBriefInfo } from "../../services/infrastructure/ecsServiceDeployments.js";
import type { EcsRollbackStatus } from "../../types/ecsRollbackVerdict.js";
/** How a service deployment ended, or that it has not yet. */
export type ServiceDeploymentOutcome = "succeeded" | "rolled-back" | "stopped" | "in-flight";
/**
 * The bucket a status reads into. A status this SDK does not name, or none,
 * reads as still in flight: it never counts as a rollback, so it never
 * authorises a cancel.
 */
export declare function serviceDeploymentOutcome(status: string | undefined): ServiceDeploymentOutcome;
/** Whether ECS reports that it rolled the deployment back. */
export declare function isRollbackStatus(status: string | undefined): status is EcsRollbackStatus;
/**
 * What a service deployment's status says of whether ECS rolled it back:
 * `rollback` once ECS reports one, requested, running or ended;
 * `no-rollback` once it succeeded or ECS stopped it, whether a later
 * deployment superseded it or its circuit breaker tripped with rollback
 * off; `unsaid` while it is pending or in progress.
 */
export type EcsRollbackReading = "rollback" | "no-rollback" | "unsaid";
/** The reading of a status; one this SDK does not name, or none, is `unsaid`. */
export declare function ecsRollbackReading(status: string | undefined): EcsRollbackReading;
/**
 * The service deployment an update that began at `updateStartedAt` started,
 * whether CloudFormation's or a lane's own `UpdateService`: the earliest
 * created at or after it, less the clock tolerance. ECS's own circuit-breaker
 * or hook rollback is a status of that same deployment, while a later
 * `UpdateService` (the stack rollback after a cancel, say) creates a later
 * deployment, so the earliest is the update's. A deployment ECS reports
 * without a creation time is never chosen.
 */
export declare function serviceDeploymentStartedAt(deployments: readonly ServiceDeploymentBriefInfo[], updateStartedAt: Date, skewMs: number): ServiceDeploymentBriefInfo | undefined;