import { IWeaveProvider } from "./types.js";
/**
 * JsonProvider
 *
 * File-system implementation of IWeaveProvider that stores each record as an
 * individual JSON file inside a configurable data directory.
 *
 * Key → file-path mapping:
 *   key = "graph:my-session"  →  <dataDir>/graph__my-session.json
 *
 * Colons in keys are replaced with double-underscores and any characters that
 * are not safe for all major file systems are percent-encoded, so the mapping
 * is always reversible.
 *
 * Backward-compatible with the original weave-graph PersistenceManager:
 *   graph:<chatId>  →  weave-data/<chatId>.json   (no namespace prefix)
 * That legacy layout is preserved for existing data directories.
 */
export declare class JsonProvider<T = unknown> implements IWeaveProvider<T> {
    private dataDir;
    private closed;
    constructor(dataDir?: string);
    close(): Promise<void>;
    get(key: string): Promise<T | null>;
    set(key: string, value: T): Promise<void>;
    delete(key: string): Promise<void>;
    list(prefix?: string): Promise<string[]>;
    clear(prefix?: string): Promise<void>;
    /**
     * Convert a logical key into an absolute file path.
     *
     * Rules (applied in order):
     *   1. Replace ":" with "__" (namespace separator)
     *   2. Replace "/" with "--" (path separator used in ids)
     *   3. Append ".json"
     */
    private keyToPath;
    /**
     * Reverse of keyToPath — converts a filename back into a logical key.
     */
    private pathToKey;
    private ensureDataDir;
    private assertOpen;
    /** Expose dataDir for testing / diagnostics. */
    get directory(): string;
}
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