import { Logger } from '@n8n/backend-common';
import type { IDataObject, INodeProperties } from 'n8n-workflow';
import type { SecretsProviderSettings, SecretsProviderState } from '../types';
import { SecretsProvider } from '../types';
export declare class VaultProvider extends SecretsProvider {
    #private;
    readonly logger: Logger;
    properties: INodeProperties[];
    displayName: string;
    name: string;
    state: SecretsProviderState;
    private cachedSecrets;
    private settings;
    private refreshTimeout;
    private refreshAbort;
    constructor(logger?: Logger);
    init(settings: SecretsProviderSettings): Promise<void>;
    connect(): Promise<void>;
    disconnect(): Promise<void>;
    private setupTokenRefresh;
    private tokenRefresh;
    private authUsernameAndPassword;
    private authAppRole;
    private getTokenInfo;
    private getKVSecrets;
    update(): Promise<void>;
    test(): Promise<[boolean] | [boolean, string]>;
    getSecret(name: string): IDataObject;
    hasSecret(name: string): boolean;
    getSecretNames(): string[];
}