import type { oTokenProvider, oTokenResult } from './o-token-provider.js';
export interface OAuth2TokenResponse {
    access_token: string;
    expires_in?: number;
    refresh_token?: string;
    token_type?: string;
    [key: string]: any;
}
export interface RefreshTokenProviderConfig {
    tokenEndpoint: string;
    refreshToken: string;
    clientId?: string;
    clientSecret?: string;
    headers?: Record<string, string>;
    additionalParams?: Record<string, string>;
    parseResponse?: (body: any) => oTokenResult;
}
export declare class RefreshTokenProvider implements oTokenProvider {
    private tokenEndpoint;
    private refreshToken;
    private clientId?;
    private clientSecret?;
    private headers;
    private additionalParams;
    private parseResponse;
    constructor(config: RefreshTokenProviderConfig);
    acquireToken(): Promise<oTokenResult>;
    updateRefreshToken(token: string): void;
    static defaultParseResponse(body: OAuth2TokenResponse): oTokenResult;
}
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