/**
 * File-based Index Storage Adapter
 *
 * Implements the IndexStorage port using the filesystem.
 * Index data is stored as JSON files in the .raggrep directory.
 */
import type { IndexStorage } from '../../domain/ports';
import type { FileSystem } from '../../domain/ports';
import type { Config, FileIndex, ModuleManifest, GlobalManifest, FileSummary, SymbolicIndexMeta, Tier1Manifest } from '../../domain/entities';
/**
 * Filesystem-based index storage.
 *
 * Structure:
 * .raggrep/
 * ├── config.json
 * ├── manifest.json (global)
 * └── index/
 *     └── <moduleId>/
 *         ├── manifest.json (module)
 *         ├── symbolic/
 *         │   ├── _meta.json (BM25 statistics)
 *         │   └── <filepath>.json (per-file summaries)
 *         └── <filepath>.json (file indexes with embeddings)
 */
export declare class FileIndexStorage implements IndexStorage {
    private fs;
    private rootDir;
    private indexDir;
    constructor(fs: FileSystem, rootDir: string, indexDir?: string);
    private getIndexPath;
    private getConfigPath;
    private getGlobalManifestPath;
    private getModuleIndexPath;
    private getModuleManifestPath;
    private getSymbolicPath;
    private getSymbolicMetaPath;
    private getSymbolicFilePath;
    private getFileIndexPath;
    /** @deprecated Use getSymbolicMetaPath instead */
    private getTier1Path;
    loadConfig(): Promise<Config>;
    saveConfig(config: Config): Promise<void>;
    loadGlobalManifest(): Promise<GlobalManifest | null>;
    saveGlobalManifest(manifest: GlobalManifest): Promise<void>;
    loadModuleManifest(moduleId: string): Promise<ModuleManifest | null>;
    saveModuleManifest(moduleId: string, manifest: ModuleManifest): Promise<void>;
    loadSymbolicMeta(moduleId: string): Promise<SymbolicIndexMeta | null>;
    saveSymbolicMeta(moduleId: string, meta: SymbolicIndexMeta): Promise<void>;
    loadFileSummary(moduleId: string, filepath: string): Promise<FileSummary | null>;
    saveFileSummary(moduleId: string, filepath: string, summary: FileSummary): Promise<void>;
    deleteFileSummary(moduleId: string, filepath: string): Promise<void>;
    /**
     * List all file summaries by reading the module manifest.
     * Returns filepaths relative to the project root.
     */
    listFileSummaries(moduleId: string): Promise<string[]>;
    /** @deprecated Use loadSymbolicMeta and loadFileSummary instead */
    loadTier1Index(moduleId: string): Promise<Tier1Manifest | null>;
    /** @deprecated Use saveSymbolicMeta and saveFileSummary instead */
    saveTier1Index(moduleId: string, manifest: Tier1Manifest): Promise<void>;
    loadFileIndex(moduleId: string, filepath: string): Promise<FileIndex | null>;
    saveFileIndex(moduleId: string, filepath: string, index: FileIndex): Promise<void>;
    deleteFileIndex(moduleId: string, filepath: string): Promise<void>;
    listIndexedFiles(moduleId: string): Promise<string[]>;
    indexExists(): Promise<boolean>;
    deleteIndex(): Promise<void>;
    getRootDir(): string;
}