declare const WORKER_KINDS: readonly ["api", "data", "ssr"];
export type WorkerKind = (typeof WORKER_KINDS)[number];
export interface WorkerGenerationIdentity {
    readonly scopeId: string;
    readonly generationId: string;
}
export interface ResolvedWorkerGeneration {
    readonly workerId: string;
    readonly reusable: boolean;
}
/**
 * Snapshot the host-owned identity that proves one worker generation may
 * safely retain an imported module graph.
 *
 * Omitting both fields deliberately selects a single-use worker. Supplying
 * only one cannot establish an invalidation boundary and therefore fails
 * closed.
 */
export declare function snapshotWorkerGenerationIdentity(scopeId: unknown, generationId: unknown): Readonly<WorkerGenerationIdentity> | undefined;
/**
 * Hash arbitrarily sized semantic material with the exact UTF-16 encoding used
 * by worker identities. This keeps env and policy values out of pool keys
 * without introducing TextEncoder replacement-character collisions.
 */
export declare function digestWorkerGenerationMaterial(value: string): Promise<string>;
/**
 * Return whether an exact reusable worker identity belongs to `scopeId`.
 *
 * This is intentionally a complete-key match rather than a raw prefix check.
 * It is used by WorkerPool retirement, where confusing nested scopes would
 * otherwise terminate unrelated tenant work.
 */
export declare function isWorkerGenerationInScope(workerId: unknown, scopeId: unknown): boolean;
/**
 * Resolve the exact WorkerPool key for one immutable source generation.
 *
 * The versioned, length-framed identity includes the execution kind and an
 * exact opaque encoding of the scope. The generation digest keeps release and
 * branch identities out of telemetry. Without a proven generation, a unique
 * single-use key prevents stale dependency graphs from crossing requests.
 */
export declare function resolveWorkerGeneration(kind: WorkerKind, identity?: Readonly<WorkerGenerationIdentity>): Promise<Readonly<ResolvedWorkerGeneration>>;
export {};
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