import type { StoredHandle, StoredFile } from '../types';
export declare class IDBStorage {
    private dbName;
    private db;
    private dbPromise;
    private maxRecentFiles;
    private maxCacheSize;
    /** Called with the records evicted by pruning, so adapters can clean up backing resources */
    onFilesPruned?: (files: StoredFile[]) => void;
    constructor(appName: string, maxRecentFiles?: number, maxCacheSize?: number);
    private getDB;
    storeHandle(handle: FileSystemFileHandle | FileSystemDirectoryHandle, id: string, path?: string): Promise<StoredHandle>;
    getStoredHandles(): Promise<StoredHandle[]>;
    getHandleObject(id: string): Promise<FileSystemFileHandle | FileSystemDirectoryHandle | null>;
    removeHandle(id: string): Promise<void>;
    clearHandles(): Promise<void>;
    private pruneOldHandles;
    storeFile(file: StoredFile): Promise<void>;
    /**
     * Update name/path/mimeType on an existing record without touching its
     * cached content. No-op (returns false) when the record does not exist.
     */
    updateFileMetadata(id: string, updates: {
        name?: string;
        path?: string;
        mimeType?: string;
    }): Promise<boolean>;
    storeFileDeferred(file: StoredFile): void;
    getStoredFile(id: string): Promise<StoredFile | null>;
    removeFile(id: string): Promise<void>;
    getStoredFiles(): Promise<StoredFile[]>;
    clearFiles(): Promise<void>;
    private pruneOldFiles;
    setNamedHandle(key: string, handle: FileSystemFileHandle | FileSystemDirectoryHandle): Promise<void>;
    getNamedHandle(key: string): Promise<{
        handle: FileSystemFileHandle | FileSystemDirectoryHandle;
        name: string;
        type: 'file' | 'directory';
    } | null>;
    removeNamedHandle(key: string): Promise<void>;
    dispose(): void;
}