/**
 * Service that handles secure storage of tokens and API keys
 */
export declare class TokenStore {
    private fallbackConf;
    private readonly PROJECT_KEY_PREFIX;
    private readonly USER_TOKEN_ACCOUNT;
    constructor();
    /**
     * Clears all stored credentials
     */
    clearAllCredentials(): Promise<void>;
    /**
     * Deletes a project API key
     */
    deleteProjectApiKey(projectId: string): Promise<void>;
    /**
     * Deletes the user token
     */
    deleteUserToken(): Promise<void>;
    /**
     * Retrieves a project API key
     */
    getProjectApiKey(projectId: string): Promise<null | string>;
    /**
     * Retrieves the user authentication token
     */
    getUserToken(): Promise<null | string>;
    /**
     * Stores a project API key securely
     */
    storeProjectApiKey(projectId: string, apiKey: string): Promise<void>;
    /**
     * Stores the user authentication token securely
     */
    storeUserToken(token: string): Promise<void>;
    /**
     * Ensures the fallback directory exists
     */
    private ensureFallbackDir;
}