/**
 * Home page ts/js
 *
 * @module
 */
declare function main(): void;
declare function on_input_key(evt: KeyboardEvent, ielt: HTMLInputElement, oelt: HTMLTextAreaElement, cb_resize: HTMLInputElement, cb_scroll: HTMLInputElement, max_height: number): Promise<void>;
declare function auto_resize_output(checkbox_element: HTMLInputElement, target_element: HTMLTextAreaElement, max_height: number): void;
declare function auto_scroll_to_bottom(checkbox_element: HTMLInputElement, target_element: HTMLTextAreaElement): void;
type ok_err<t> = {
    ok: true;
    result: t;
} | {
    ok: false;
    error: string;
};
type wfcin = {
    wfcin: string;
};
type wfcout = ok_err<string>;
declare function assert(condition: boolean, fail_msg: string): void;
declare function fetch_wfcin(user_line: string): Promise<wfcout>;