export interface AuthCodeFlowParams {
    cacheKey: string;
    authorizationEndpoint: string;
    tokenUrl: string;
    clientId: string;
    clientSecret: string;
    scopes: string[];
    tokenEndpointAuthMethod: 'client_secret_basic' | 'client_secret_post';
    pkce: boolean;
    redirectPort?: number;
}
export interface AuthCodeStartResponse {
    status: 'authorization_required';
    method: 'authorization_code';
    message: string;
    authorizationUrl: string;
    instruction: string;
}
export declare class AuthCodeFlowManager {
    private readonly pending;
    startAuthCodeFlow(params: AuthCodeFlowParams): Promise<AuthCodeStartResponse>;
    pollAuthCodeFlow(cacheKey: string): Promise<{
        status: 'complete';
        token: {
            accessToken: string;
            expiresIn?: number;
        };
    } | {
        status: 'pending';
    }>;
    hasPending(cacheKey: string): boolean;
    cleanup(): void;
}