export declare const DEFAULT_PROXY_SHUTDOWN_CLEANUP_TIMEOUT_MS = 4000;
export interface ProxyShutdownStep {
    readonly name: string;
    readonly run: () => void | PromiseLike<void>;
    /** Earlier steps that must complete before this owner can be released. */
    readonly requires?: readonly string[];
}
export interface ProxyShutdownFailure {
    readonly step: string;
    readonly error: unknown;
    readonly timedOut: boolean;
}
export interface RunProxyShutdownStepsOptions {
    readonly timeoutMs: number;
    readonly onFailure?: (failure: ProxyShutdownFailure) => void;
}
export declare function parseProxyShutdownCleanupTimeoutMs(rawValue: string | undefined, defaultValue?: number): number;
/**
 * Run cleanup steps in ownership order while ensuring one failure cannot skip
 * independent later owners. A shared deadline bounds total asynchronous
 * cleanup. Steps whose declared owner prerequisite did not complete are
 * skipped rather than tearing that owner down underneath an active borrower.
 */
export declare function runProxyShutdownSteps(steps: readonly ProxyShutdownStep[], options: RunProxyShutdownStepsOptions): Promise<readonly ProxyShutdownFailure[]>;
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