/**
 * The store-level minimum writer version (S2 ruling (c), T12343).
 *
 * A released binary older than S2 writes without frames; its captures are
 * sealed as singleton transactions flagged `unframed` (S3), never claimed
 * atomic. To bound that mixed-version window, turning capture on records
 * `min_writer_version` in `_sync_meta` (this build's version, never lowered).
 * Every build from S2 on checks it at open, before any write, and refuses to
 * write a store that requires a newer writer. Builds released before S2 do
 * not know the marker: that is the window the release notes name.
 *
 * @task T12343
 * @module store/sync/writer-version
 */
import type { DatabaseSync } from 'node:sqlite';
/** `_sync_meta` key of the marker. */
export declare const MIN_WRITER_VERSION_KEY = "min_writer_version";
/** A writer older than the store's `min_writer_version`. */
export declare class StoreWriterTooOldError extends Error {
    readonly required: string;
    readonly actual: string;
    readonly code = "E_STORE_WRITER_TOO_OLD";
    constructor(required: string, actual: string);
}
/** Compare two versions by their numeric parts; null when either is unparseable. */
export declare function compareWriterVersions(a: string, b: string): number | null;
/** The store's marker, or undefined. Read-only. */
export declare function readMinWriterVersion(db: DatabaseSync): string | undefined;
/**
 * Record `version` as the store's minimum writer version, unless the marker
 * already requires as much or more. Call inside the capture-on transaction.
 *
 * @returns Whether the marker changed.
 */
export declare function raiseMinWriterVersion(db: DatabaseSync, version?: string): boolean;
/**
 * Refuse to write a store whose marker requires a newer writer. Call at open,
 * before any write. An unparseable version on either side never refuses.
 *
 * @throws {StoreWriterTooOldError}
 */
export declare function assertWriterVersion(db: DatabaseSync, version?: string): void;
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