export interface OAuthFlowParams {
    authorizeUrl: string;
    tokenUrl: string;
    clientId: string;
    redirectUri: string;
    scopes: string;
    pluginType: string;
    extraParams?: Record<string, string>;
    useJsonTokenExchange?: boolean;
}
export interface OAuthFlowResult {
    authorizeUrl: string;
    state: string;
}
export interface OAuthTokens {
    accessToken: string | null;
    refreshToken: string | null;
    clientId: string;
    pluginType: string;
}
export declare class OAuthFlowService {
    private readonly logger;
    private readonly pendingFlows;
    createFlow(params: OAuthFlowParams): OAuthFlowResult;
    exchangeCode(state: string, code: string): Promise<OAuthTokens>;
    private cleanupExpired;
}