Trying to make an AJAX a promise in order to force the app to wait

I'm trying to use an AJAX in an application using puppeteer.js. In puppeteer everything returns a promise so you can effectively use the await keyword before most actions to force it to wait. This is kind of crucial since I need certain things done in chronological order.

However, let's say I have some vendor code that performs an AJAX request deeply nested inside a function. I want to somehow use that function and force the app to wait for a response before continuing.

I basically want to use await keyword but with a custom function. I almost want the function to inherit from promise because or else I can't use it?

your custom function only needs to return a new promise
but to make it work you need to know when the request is done, a callback or some event?

you can use waitForFunction