/**
 * Plain-data protocol for the isolated declarative configuration evaluator.
 *
 * Neither side trusts structured clone to preserve prototypes, descriptors, or
 * frozen state. Every received envelope is inspected through own property
 * descriptors, rebuilt with a null prototype, and frozen before use.
 *
 * @module
 */
import { type DeclarativeConfigErrorCode, type DeclarativeConfigErrorPhase, type DeclarativeConfigErrorReason, DeclarativeConfigEvaluationError, type DeclarativeConfigFileName, type DeclarativeConfigSourceLocation, type PreparedDeclarativeConfigWorkerPayload } from "./declarative-evaluator.js";
import { type ConfigSnapshotRecord } from "./snapshot.js";
/** Version of the worker request/response envelope contract. */
export declare const DECLARATIVE_CONFIG_WORKER_PROTOCOL_VERSION = 2;
/** The already-coupled cache identity and evaluator input sent to the worker. */
export type DeclarativeConfigWorkerRequest = PreparedDeclarativeConfigWorkerPayload;
/** Serializable fields retained from a typed evaluator failure. */
export interface DeclarativeConfigWorkerErrorDTO {
    readonly code: DeclarativeConfigErrorCode;
    readonly phase: DeclarativeConfigErrorPhase;
    readonly reason: DeclarativeConfigErrorReason;
    readonly location: DeclarativeConfigSourceLocation | null;
    readonly retryable: boolean;
}
/** Successful worker response. */
export interface DeclarativeConfigWorkerSuccessResponse {
    readonly ok: true;
    readonly snapshot: ConfigSnapshotRecord;
}
/** Failed worker response. */
export interface DeclarativeConfigWorkerErrorResponse {
    readonly ok: false;
    readonly error: DeclarativeConfigWorkerErrorDTO;
}
/** Exact one-shot response emitted by the evaluator worker. */
export type DeclarativeConfigWorkerResponse = DeclarativeConfigWorkerSuccessResponse | DeclarativeConfigWorkerErrorResponse;
/** Infrastructure failures that can be created outside the evaluator. */
export type DeclarativeConfigWorkerInfrastructureReason = "worker-aborted" | "worker-overloaded" | "worker-protocol" | "worker-memory-limit-unavailable" | "worker-timeout" | "worker-unavailable";
/**
 * Build a typed failure for worker lifecycle and protocol errors.
 *
 * The caller owns the retry policy because aborts and host availability have
 * different retry semantics.
 */
export declare function createDeclarativeConfigWorkerInfrastructureError(reason: DeclarativeConfigWorkerInfrastructureReason): DeclarativeConfigEvaluationError;
/**
 * Validate and detach one worker request.
 *
 * Resource and language semantics remain the evaluator's responsibility; this
 * boundary only accepts the exact direct-input shape and plain string data.
 */
export declare function decodeDeclarativeConfigWorkerRequest(value: unknown): DeclarativeConfigWorkerRequest;
/** Create the exact success envelope emitted by the worker. */
export declare function createDeclarativeConfigWorkerSuccessResponse(snapshot: unknown): DeclarativeConfigWorkerSuccessResponse;
/**
 * Create the exact failure envelope emitted by the worker.
 *
 * Unknown or malformed failures are deliberately collapsed to a retryable
 * availability error; arbitrary names, messages, stacks, and prototypes never
 * cross the boundary.
 */
export declare function createDeclarativeConfigWorkerErrorResponse(error: unknown): DeclarativeConfigWorkerErrorResponse;
/**
 * Decode one worker response.
 *
 * A valid failure envelope is rethrown as a fresh local typed error. A success
 * is recanonicalized so callers never observe structured-clone prototypes or
 * mutable descriptors.
 */
export declare function decodeDeclarativeConfigWorkerResponse(value: unknown, maximumSourceOffset: number, expectedFileName?: DeclarativeConfigFileName): DeclarativeConfigWorkerSuccessResponse;
//# sourceMappingURL=declarative-evaluator-worker-protocol.d.ts.map