TypeError: handler is not a function only when deployed to firebase but not when serve

[jojonarte]

Examples bug report

with-firebase-hosting

Error: > handler is not a function

• Downloaded the sample using the instructions in the description and ensuring everything works
• Integrated custom express server to handle redirection see https://github.com/jojonarte/with-express-firebasehosting-next
• Tested the application okay with npm run serve everything in the application works
• Tested with npm run deploy, deployment was successful however opening the hosting URL results in Error: could not handle the request and in firebase functions log TypeError: handler is not a function at cloudFunction (/srv/node_modules/firebase-functions/lib/providers/https.js:57:9) at /worker/worker.js:783:7 at /worker/worker.js:766:11 at _combinedTickCallback (internal/process/next_tick.js:132:7) at process._tickDomainCallback (internal/process/next_tick.js:219:9)

To Reproduce

Steps to reproduce the behavior, please provide code snippets or a repository:

1. Go to https://github.com/jojonarte/with-express-firebasehosting-next
2. follow manual download instructions
3. follow firebase setup instructions
4. npm install
5. npm run serve should make the app work
6. npm run deploy
7. view the URL

should build and upload to hosting and firebase functions and error shouldn't show just like in npm run serve

I expected it should build and deploy the cloud function and hosting properly to firebase just like how it works using npm run serve

System information

• OS: macOS
• Version of Next.js: "^9.1.7"

[thevvv36]

hey can i contribute a take this issue

[balazsorban44]

@thevvv36 do you still have interest in helping out on this?