/**
 * Strategy seam for the optional VaultFrame snapshot primitive.
 * Core imports `ShadowStrategy` as TYPE-ONLY and `NO_SHADOW` as a
 * 4-line stub. `VaultFrame` is only constructed inside `withShadow()`
 * — consumers who never import `@noy-db/hub/shadow` ship none of
 * the ~129 LOC.
 *
 * @internal
 */
import type { VaultFrame } from './vault-frame.js';
/**
 * @internal
 */
export interface ShadowStrategy {
    /**
     * Build a `VaultFrame` bound to the given vault. The factory type
     * is kept loose (`unknown`) to avoid a core → shadow type
     * dependency — the consumer always calls this through
     * `vault.frame()`, which returns `VaultFrame` at its surface.
     */
    buildFrame(vault: unknown): VaultFrame;
}
/**
 * No-shadow stub.
 *
 * @internal
 */
export declare const NO_SHADOW: ShadowStrategy;