How to integrate firebase cloud messaging in a PWA created with npx create-react-app --template cra-template-pwa?

[akash07k]

So I'm creating a PWA via npx create-react-app myPWA --template cra-template-pwa Now my question is that how do I use the firebase cloud messaging in this progressive web app? Because the app already has a serviceworker present in it's source and I'm not getting that how do I integrate firebase-messaging-sw.js file with it. I searched on google but couldn't find any proper examples. How to use standard serviceworker provided by create-react-app along with firebase-messaging-sw.js? If possible, a small example will be very much appreciated.