braintree-web | A suite of tools for integrating Braintree in the browser

You could do something like this. Ie create a promise, and once everything is ok -- and the button is clicked -- it will resolve with the nonce.

Of course, this will only work for the first click of the button. Because, once a promise is either resolved or rejected, it won't change it's status and result anymore.

Though we do not get exact UI like Drop in UI, we can get the card type and display it ourselves by using listeners on cardTypeChange.

Yes it's possible, if your backend serves your frontend. Two package.json is useful when your backend and your frontend run on two separate node programs.

The invalid host headers are probably due to how your server handles headers, but since you didn't posted a minimal reproducible example, as of now we can't help you further.

I don't see braintree in package.json, it is working in your team member's pc because they maybe installed it separately. Sometimes I tend to forget adding it to package.json when I develop a feature because it takes experimenting with bunch of packages so the package is in my node_modules folder already. Also there is a possibility that someone forgot to git add the package.json.

Anyway, To add to your package.json do and push,