/**
 * `useDemoAuth` is a hook that provides a `JazzAuth` object for demo authentication.
 *
 *
 * ```ts
 * const { state, logIn, signUp, existingUsers } = useDemoAuth();
 * ```
 *
 * @category Auth Providers
 */
export declare function useDemoAuth(): {
    readonly state: "anonymous" | "signedIn";
    readonly logIn: (username: string) => Promise<void>;
    readonly signUp: (username: string) => Promise<void>;
    readonly existingUsers: string[];
};
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