firebase emulators:exec failing in 9.16.1, 9.16.2, 9.16.3 and 9.16.4

[delucis]

Environment info

firebase-tools: 9.16.4

Platform: Ubuntu

Test case

I have a test suite running in CI using firebase-tools. Here’s the command:
firebase emulators:exec --only firestore 'npm run jest'.

These tests ran and passed with firebase-tools 9.16.0 (and earlier) (most recent successful run).

When upgrading to 9.16.2 or 9.16.4, the CI fails with a “No currently active project” error. Here’s the error in the PR attempting to upgrade to 9.16.4.

My guess is that #3636 is the culprit.

Steps to reproduce

1. Upgrade firebase-tools to a version greater than 9.16.0
2. Run a command with firebase emulators:exec

Expected behavior

The command continues to run as with <=9.16.0

Actual behavior

The command fails with the following error:

Error: No currently active project.
To run this command, you need to specify a project. You have two options:
- Run this command with --project <alias_or_project_id>.
- Set an active project by running firebase use --add, then rerun this command.
To list all the Firebase projects to which you have access, run firebase projects:list.
To learn about active projects for the CLI, visit firebase.google.com/docs/cli#project_aliases