import type { ErrorResponse } from '@scalar/helpers/errors/normalize-error';
import { type Static } from '@scalar/typebox';
/**
 * OpenID Connect Discovery Document (subset)
 * Represents the metadata fields consumed by the auth selector flow conversion.
 *
 * @see https://openid.net/specs/openid-connect-discovery-1_0.html
 */
declare const OpenIDConnectDiscoverySchema: import("@scalar/typebox").TObject<{
    /** URL of the OAuth 2.0 Authorization Endpoint */
    authorization_endpoint: import("@scalar/typebox").TOptional<import("@scalar/typebox").TString>;
    /** URL of the OAuth 2.0 Token Endpoint */
    token_endpoint: import("@scalar/typebox").TOptional<import("@scalar/typebox").TString>;
    /** List of OAuth 2.0 scope values that this server supports */
    scopes_supported: import("@scalar/typebox").TOptional<import("@scalar/typebox").TArray<import("@scalar/typebox").TString>>;
    /** List of OAuth 2.0 grant type values that this server supports */
    grant_types_supported: import("@scalar/typebox").TOptional<import("@scalar/typebox").TArray<import("@scalar/typebox").TString>>;
    /** Supported PKCE code challenge methods (RFC 7636) */
    code_challenge_methods_supported: import("@scalar/typebox").TOptional<import("@scalar/typebox").TArray<import("@scalar/typebox").TString>>;
}>;
export type OpenIDConnectDiscovery = Static<typeof OpenIDConnectDiscoverySchema>;
/**
 * The required scope for OpenID Connect requests.
 * If this scope is present, the request is an OIDC request; otherwise, it is a standard OAuth 2.0 request.
 */
export declare const OPENID_SCOPE = "openid";
/**
 * Fetches the OpenID Connect discovery document from the specified URL.
 * Supports both full discovery URLs and issuer URLs.
 *
 * @param url - The OpenID Connect discovery URL or issuer URL
 * @returns The discovery document or an error
 */
export declare const fetchOpenIDConnectDiscovery: (url: string, proxyUrl: string) => Promise<ErrorResponse<OpenIDConnectDiscovery>>;
export {};
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