/**
 * Preference Store Implementation.
 *
 * File-based JSON storage of user preferences in `.lisa/preferences.json`.
 * Reads the full file on every operation (no in-memory cache — simple, correct).
 *
 * Part of Phase 5D: Preference Key-Value Store.
 */
import type { IPreferenceStore } from '../../domain/interfaces/IPreferenceStore';
/**
 * Create a file-based PreferenceStore.
 *
 * @param projectRoot - Project root directory (location of `.lisa/`)
 * @param logger - Optional logger for warnings (invalid JSON, etc.)
 */
export declare function createPreferenceStore(projectRoot: string, logger?: {
    warn: (msg: string, ctx?: Record<string, unknown>) => void;
}): IPreferenceStore;
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