Walkthrough

Right-click inspect element and select the Debugger tab. Then click command + P to search for and open two files:
  • client.js,
  • and firebase-messaging-sw.js.
You'll likely need to open the Application tab in DevTools and navigate to the Service Workers side tab. Then click the link for firebase-messaging-sw.js to inspect it in the Sources tab.
client.js
firebase-messaging-sw.js

Copy link
On this page
Open the app
Open DevTools
Video