/**
 * Configuration for OAuth client credentials flow
 */
export interface OAuthConfig {
    /** The URL to request the OAuth token from */
    authUrl: string;
    /** The client ID for OAuth authentication */
    clientId: string;
    /** The client secret for OAuth authentication */
    clientSecret: string;
    /** The scope for the OAuth token. Use empty string if no scope is needed. */
    scope: string;
}
/**
 * Standard OAuth 2.0 token response format as defined in RFC 6749
 */
export interface OAuthTokenResponse {
    /** The access token issued by the authorization server */
    access_token: string;
    /** The type of token issued (typically "Bearer") */
    token_type: string;
    /** The lifetime in seconds of the access token */
    expires_in: number;
    /** The refresh token, which can be used to obtain new access tokens (optional) */
    refresh_token?: string;
    /** The scope of the access token (optional) */
    scope?: string;
}
/**
 * A utility class for handling OAuth client credentials flow.
 * This is specifically for the client credentials grant type,
 * which is used for server-to-server authentication.
 */
export declare class OAuthClient {
    private config;
    constructor(config: OAuthConfig);
    /**
     * Requests an OAuth token using the client credentials flow.
     * The request is sent as application/x-www-form-urlencoded.
     * @returns A promise that resolves to the token response containing access_token and expires_in
     * @throws Error if the token request fails
     */
    getToken(): Promise<OAuthTokenResponse>;
}
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