/**
 * Dynamically generate the callback URL for OAuth2/OpenID SSO providers
 *
 * Uses AUTH_ALLOWED_PUBLIC_URLS to find an alternate PUBLIC_URL based on the origins protocol and host.
 * Defaults to the PUBLIC_URL if no match is found.
 *
 * @param providerName SSO provider name
 * @param requestOrigin Origin of the request (protocol + host)
 * @returns Callback URL
 */
export declare function generateCallbackUrl(providerName: string, requestOrigin: string): string;