Connect to SSE endpoint from JavaScript

SSE_public_script.js

function connect(path) {
    const event = new EventSource(BASE_URL + path);
    event.onopen = () => console.log("Opened");
    event.onmessage = function (ev) {
      const news = JSON.parse(ev.data);
      render("#data", news.done ? "No more updates available." : news.value);
      if (news.done) {
        event.close();
        markEnd();
      }
    };
  }