I'm using Firebase to get message from backend. It works perfectly on my localhost. But in production, my web served at .../XXXX and firebase-messaging-sw.js located at .../XXXX/firebase-messaging-sw.js but Angular always load .../firebase-messaging-sw.js. So, I got a 404 error. I put firebase-messaging-sw.js at src folder. Can someone explain why? Thanks.
"assets": [
"src/favicon.ico",
"src/assets",
"src/firebase-messaging-sw.js",
"src/manifest.json"
]