import type { ScheduledPath, SyncWork, WorkOutcome, WorkSlice } from "./sync-work.js";
/** Versioned, data-only protocol shared by the coordinator parent and its forked workers. */
export declare const SYNC_WORKER_PROTOCOL_VERSION = 1;
export type SyncWorkerTarget = {
    /** Stable target identities, never credentials or a credential reference. */
    readonly uids: readonly string[];
};
export type WorkerWorkSlice = {
    readonly id: string;
    readonly target: SyncWorkerTarget;
    readonly work: SyncWork;
    readonly paths: readonly ScheduledPath[];
};
export type WorkerExecuteMessage = {
    readonly protocol: typeof SYNC_WORKER_PROTOCOL_VERSION;
    readonly type: "execute";
    readonly requestId: string;
    readonly slice: WorkerWorkSlice;
};
export type WorkerCancelMessage = {
    readonly protocol: typeof SYNC_WORKER_PROTOCOL_VERSION;
    readonly type: "cancel";
    readonly requestId: string;
};
export type WorkerShutdownMessage = {
    readonly protocol: typeof SYNC_WORKER_PROTOCOL_VERSION;
    readonly type: "shutdown";
};
export type WorkerParentMessage = WorkerExecuteMessage | WorkerCancelMessage | WorkerShutdownMessage;
export type WorkerReadyMessage = {
    readonly protocol: typeof SYNC_WORKER_PROTOCOL_VERSION;
    readonly type: "ready";
    readonly pid: number;
    /** Per-process state marker used to prove module-global isolation. */
    readonly moduleStateId: string;
};
export type WorkerProgressMessage = {
    readonly protocol: typeof SYNC_WORKER_PROTOCOL_VERSION;
    readonly type: "progress";
    readonly requestId: string;
    readonly phase: "pre-mutation" | "post-mutation" | "pre-result";
};
export type WorkerOutcomeMessage = {
    readonly protocol: typeof SYNC_WORKER_PROTOCOL_VERSION;
    readonly type: "outcome";
    readonly requestId: string;
    readonly outcome: WorkOutcome;
};
export type WorkerChildMessage = WorkerReadyMessage | WorkerProgressMessage | WorkerOutcomeMessage;
/**
 * Turn the in-process slice into the intentionally smaller cross-process form.
 * AbortSignal and any caller-owned context are deliberately absent from this form.
 */
export declare function toWorkerExecuteMessage(slice: WorkSlice): WorkerExecuteMessage;
/** Reject accidental credential-bearing context before it reaches IPC. */
export declare function assertSafeWorkerMessage(message: WorkerParentMessage | WorkerChildMessage): void;
export declare function isWorkerParentMessage(value: unknown): value is WorkerParentMessage;
export declare function isWorkerChildMessage(value: unknown): value is WorkerChildMessage;
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