Tail -f

this is a mocking of tail -f linux command written in node js when ever the file changed the changes are updated in client side

Uses Eventsource in client side to check for updates

files changes are read via node js fs api

   const tail = fs.watch(p, (type, file) => {
      // on file change
      if (type === "change") {
        const lines = tailLog(p, 10);

        // Send each line as an event to the client
        lines.forEach((line) => {
          res.write(`data: ${line}\n\n`);
        });
      }

Event source api is used in client side

const eventSource = new EventSource("http://localhost:8080/tail");

const outPut = document.querySelector(".tail");

eventSource.addEventListener("message", (event) => {
  outPut.innerHTML += event.data + "\n";

  outPut.scrollTop = outPut.scrollHeight;
});