How to finalize my project ?

Hey folks,

at first its great to be here. It seems like this is a great community where everyone love the same thing.

About my problem:

I made a piece of HW with a ESP32 on it. To control this ( its some switching and sensor reading ) I wrote a server script for the ESP and a html for my client. I just sended everything to the ESP.
The code works like expected and it seems to be good.

Well to put the html on the device I used this in the IDE:

let fs = require('fs');
try {
  fs.readdirSync();
 } catch (e) { //'Uncaught Error: Unable to mount media : NO_FILESYSTEM'
  console.log('Formatting FS - only need to do once');
  E.flashFatFS({ format: true });
}
fs.writeFileSync('index.html', 'here is my code I want to put in the index');

Wich worked perfectly.
My code for the ESP was also just putted on the device by the IDE.
I did some research how I could simplify this without progress.

Is it possible to create a own binary wich got this included ?
Or does anyone got an idea what to do next ?

Thanks in advance

Chris