.js client side events?

[trolovecro 3]

Hi guys, yesterday I tried this code for client side js:

mp.events.add("playerSpawn", () => {
     mp.gui.chat.push("You just spawned");
});

and its doesnt work. Just like "playerJoin" or other events on client side.

Also i tried for "render" event,and its worked just fine.

Can you explain why client side events wont work?

(my script is added in index.js)