export interface OAuthCallbackResult {
    code?: string;
    state?: string;
    coaId?: number;
    error?: string;
}
export declare function startOAuthLoopback(opts?: {
    timeoutMs?: number;
}): Promise<{
    redirectUri: string;
    port: number;
    waitForCallback: () => Promise<OAuthCallbackResult>;
    close: () => Promise<void>;
}>;