fix: add codebase config runtime to delegate context object

[luc-mo]

Description

Recently, I encountered an issue that arose unexpectedly during the deployment of firebase functions. The error occurs due the runtime field is not recognized in the firebase.json file, thereby causing a failure in the deployment.

Fixes #6973

Deployment log:

i  deploying  functions
i  functions: preparing  codebase  default  for  deployment
i  functions: ensuring  required  API  cloudfunctions.googleapis.com  is  enabled...
i  functions: ensuring  required  API  cloudbuild.googleapis.com  is  enabled...
i  artifactregistry: ensuring  required  API  artifactregistry.googleapis.com  is  enabled...
✔ functions: required  API  cloudbuild.googleapis.com  is  enabled
✔ functions: required  API  cloudfunctions.googleapis.com  is  enabled
✔ artifactregistry: required  API  artifactregistry.googleapis.com  is  enabled

Error: `runtime`  field  is  required  but  was  not  found  in  firebase.json  or  package.json.
To  fix  this, add  the  following  lines  to  the  `functions`  section  of  your  firebase.json:
"runtime": "nodejs20"  or  set  the  "engine"  field  in  package.json
Cleaning  up  project  directory  and  file  based  variables00:01
ERROR: Job  failed: exit  code  1

Scenarios Tested

I conducted tests by installing other versions of the package and attempting to deploy, coming to the conclusion that it was an error introduced in version 13.6.1 where the runtime property was removed from the delegateContext object declaration. The error does not occur in versions previous to 13.6.1.

I performed the test by doing an npm link of firebase-tools package and deploying my functions manually. These were deployed successfully.

Deployment log with changes:

i  functions: Loaded environment variables from .env.
i  functions: preparing . directory for uploading...
+  functions: . folder uploaded successfully
i  functions: updating Node.js 20 (1st Gen) function health(us-central1)...
i  functions: updating Node.js 20 (1st Gen) function users(us-central1)...

+  functions[health(us-central1)] Successful update operation.
+  functions[users(us-central1)] Successful update operation.

i  functions: cleaning up build files...
+  Deploy complete!

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[inlined]

Looks good to me. Can you add a line to CHANGELOG.md saying:

"Fixes bug detecting functions runtime from firebase.json (#6964)"?

[luc-mo]

Added! 😄

[colerogers]

@luc-mo It looks like the linter failed, could you run npm run format to fix the issue? I think it's probably just complaining about a newline at the end of the changelog

[luc-mo]

Fixed 😄