import type { AuthorizeResponse, CodeChallengeMethod, TokenResponse, OpenIdConfiguration } from "./types";
/**
 * Creates a code verifier.
 * @returns The code verifier string.
 * */
export declare function createCodeVerifier(): string;
/**
 * Creates a code challenge from the given code verifier.
 * */
export declare function createCodeChallenge(codeVerifier: string, method: CodeChallengeMethod): Promise<string>;
/**
 * Generate a random string of the specified length using the Web Crypto API.
 * @param length The length of the string to generate.
 * @returns A random string in hexadecimal format.
 * */
export declare function generateRandomString(length: number): string;
/**
 * Creates a silent iframe to load a URL without user interaction.
 * @param url The URL to load in the iframe.
 * @return The created iframe element.
 * */
export declare function createSilentIframe(url: string): HTMLIFrameElement;
/**
 * Listens for a web message with the specified state and origin.
 * @param state The expected state of the authorization response.
 * @param expectedOrigin The expected origin of the message.
 * @returns A promise that resolves with the authorization response data.
 */
export declare function listenForWebMessage(state: string, expectedOrigin: string): Promise<any>;
/**
 * Maps the JSON response from the token endpoint to a TokenResponse object.
 * @param json The JSON response from the token endpoint.
 * @return A TokenResponse object containing the token information.
 * */
export declare function mapTokenResponse(json: any): TokenResponse;
/**
 * Maps the JSON response from the authorization endpoint to an AuthorizeResponse object.
 * @param json The JSON response from the authorization endpoint.
 * @return An AuthorizeResponse object containing the authorization information.
 * */
export declare function mapAuthorizeResponse(json: any): AuthorizeResponse;
/**
 * Maps the JSON response from the OpenID configuration endpoint to an OpenIdConfiguration object.
 * @param json The JSON response from the OpenID configuration endpoint.
 * @return An OpenIdConfiguration object containing the issuer and JWKS URI.
 * */
export declare function mapOpenIdConfiguration(json: any): OpenIdConfiguration;