import { AxiosResponse } from "axios";
import { TwilioErrorCodes } from "../FlexError";
import type { AuthTokenResponse, ConsoleLoginParams } from "./OAuthLoginHandler.definitions";
import type { SSOTokenPayload } from "./TokenStorage";
export declare const generateCodeVerifier: () => Promise<string>;
export declare const generateChallenge: (verifier: string) => Promise<string>;
export declare const generateNonce: () => string;
export declare const generateState: () => string;
export declare const getRedirectUrl: (redirectUrlConfig?: string) => string;
export declare const isTwilioHosted: (redirectUrlConfig?: string) => boolean;
export declare const getRuntimeDomain: (serviceBaseUrl?: string, redirectUrlConfig?: string) => string;
export declare function sanitizeOAuthUrl(origin: string, href: string): string;
export declare function formatToken(tokenPayload: AuthTokenResponse): SSOTokenPayload;
type OAuthAxiosError = {
    isAxiosError?: boolean;
    response?: AxiosResponse;
};
type OAuthFlexError = {
    code: TwilioErrorCodes;
    status: number;
};
export type OAuthError = OAuthAxiosError | OAuthFlexError | string;
export declare function parseOAuthError(wrappedError: OAuthError): string;
export declare function parseConsoleLoginParams(): ConsoleLoginParams | undefined;
export declare const exportedForTesting: {
    urlEncodeB64: (input: string) => string;
};
export {};