export interface AuthenticateProps {
    prismaticUrl?: string;
    token: string;
}
/**
 * Authenticates an embedded user with a signed JWT token. This must be called after
 * {@link init} and before rendering any embedded screens. The token should be a
 * short-lived RS256-signed JWT generated on your backend.
 *
 * After the initial call, call `authenticate` again before the token expires
 * (typically ~60 seconds before expiry) to keep the session alive. All active
 * iframes update automatically when a new token is provided.
 *
 * @param options - Authentication options.
 * @param options.token - A signed JWT containing `sub`, `organization`, `customer`, `iat`, and `exp` claims.
 * @param options.prismaticUrl - Override the Prismatic app URL for this authentication request.
 * @throws {Error} If the token is missing or the server rejects it.
 *
 * @example
 * // Authenticate with a token fetched from your backend
 * const response = await fetch("/api/prismatic-token");
 * const { token } = await response.json();
 * await prismatic.authenticate({ token });
 *
 * @example
 * // Re-authenticate before token expiry
 * const TOKEN_LIFETIME_MS = 10 * 60 * 1000; // 10 minutes
 * const refreshToken = async () => {
 *   const { token } = await fetchToken();
 *   await prismatic.authenticate({ token });
 *   setTimeout(refreshToken, TOKEN_LIFETIME_MS - 60_000);
 * };
 * refreshToken();
 *
 * @see {@link https://prismatic.io/docs/embed/authenticate-users/ | Authenticating Embedded Users}
 */
export declare const authenticate: (options: AuthenticateProps) => Promise<void>;