One way communication with extension

[BarryCarlyon]

@Robot

Is it possible, for example, to run a loop in the code Javascript or change the value of a variable using any of the proposed methods on this page - Reference

Yes

@Robot

Is it possible in this way to establish a one-way connection between my application and the extension? (in my particular case, I need to “enable” the countdown in my extension).

Yes

Extensions Reference

Is used to send a message from you via Twitch to your Extension