import { type WorkflowRunListByScopeOptions, type WorkflowRunStore, type WorkflowRunSummary } from "../../core/workflow-run-store.js";
import type { WorkflowRun } from "../../orchestration/workflow.js";
import { type CorruptReadInfo } from "./corrupt-read-sink.js";
export interface FileWorkflowRunStoreOptions {
    /** When false, a ledger append is NOT fsync'd (the observability store is non-engine-critical). Default true. */
    fsync?: boolean;
    /** Compact the ledger into a snapshot once it exceeds this many events (then truncate). Default 1000. */
    compactEvery?: number;
    /** The observability ledger's seat; see {@link import("./shared-ledger.js").LedgerPaths.onCorruptRead}. */
    onCorruptRead?: (info: CorruptReadInfo) => void;
}
export declare class FileWorkflowRunStore implements WorkflowRunStore {
    private readonly fsyncEnabled;
    private readonly compactEvery;
    /** RB-59: authoritative state is SHARED per canonical directory (see the note above the class). */
    private readonly ledger;
    /** RB-145: this instance's own close latch — the refcount belongs to the DIRECTORY, not to callers. */
    private closed;
    private get runs();
    constructor(root: string, opts?: FileWorkflowRunStoreOptions);
    /** Serialize an op behind any in-flight op on the same id (the in-process per-id async mutex). */
    private withLock;
    /** Commit one ledger event (append + fsync) THEN flip the in-memory map (crash-safe ordering), then
     *  the best-effort housekeeping compaction (RB-150/RB-167) — all three steps in the base. */
    private commit;
    put(id: string, run: WorkflowRun): Promise<void>;
    get(id: string): Promise<WorkflowRun | null>;
    update(id: string, scope: string, run: WorkflowRun, expect?: {
        rev: number;
    }): Promise<boolean>;
    listByScope(scope: string, opts?: WorkflowRunListByScopeOptions): Promise<WorkflowRunSummary[]>;
    reap(scope: string, now: number, opts?: {
        maxAgeMs?: number;
        keep?: number;
    }): Promise<number>;
    /** Force a compaction now (test/inspection): rewrite the snapshot from the authoritative map and
     *  truncate the live ledger (RB-167's closeForSwap recipe lives in the base). */
    compactNow(): void;
    /** Test/inspection helper: number of stored runs. */
    get size(): number;
    /**
     * Release the append handle (best-effort). The LAST holder over the directory also drops its
     * cross-process writer fence (`<dir>/LOCK`), so a successor process can open the same run ledger.
     * There is no OTHER door: this store is never constructed by `FileStorageBackend`, so nothing else
     * ever hands its fence back — the doc line that used to credit "the backend factory" here named a
     * release that could not happen under any assembly, for a lock this store did not hold in the first
     * place (see the class note above).
     */
    close(): void;
}