use codemirror::{DocApi, Editor, EditorOptions};
use wasm_bindgen::prelude::*;
use web_sys::{window, HtmlTextAreaElement};

let document = window().unwrap().document().unwrap();
let text_area = document
    .create_element("textarea")
    .unwrap()
    .dyn_into::<HtmlTextAreaElement>()
    .unwrap();
document.body().unwrap().append_child(&text_area).unwrap();

let options = EditorOptions::default().line_numbers(true);
let editor = Editor::from_text_area(&text_area, &options);

editor.set_value("Hello from Rust");

editor.on_change(|_editor, _change| {
    // value changed
});