Emulator hardening and more logging

[kenney]

Goals

• Get the MCP Firebase server working with local emulator
• Add debugging (stdout and a /tmp file) to debug why MCP server would not instantiate
• Add additional debugging for API calls

Can add more env options to control the logging, etc. as requested

[gannonh]

Hi @kenney - Thanks for the PR. These look like good ideas—the changes need tests to pass with 80% coverage. Let me know if this is something you can take on. If not, I may still merge the changes and add the test coverage when time permits. Thanks! 🙏

[gannonh]

Btw, in case you weren't aware, you can use the inspector tool to view logs while debugging. No need to write to a file (which will cause permission issues as an npm). I use a shell script to launch the inspector with env vars:

#!/bin/bash

# Export environment variables

export SERVICE_ACCOUNT_KEY_PATH="/absolute/path/to/yourp/firebaseServiceKey.json"
export FIREBASE_STORAGE_BUCKET="your-project-id.firebasestorage.app"

# Launch MCP Inspector with the server

npx @modelcontextprotocol/inspector "node" "/absolute/path/to//firebase-mcp/dist/index.js" 

[kenney]

Thanks, hadn't seen the inspector tool. I had been having issues getting any stdout/stderror feedback from Cursor with the firebase-mcp. I'll see if the inspector gives me what I need and remove the direct file debugging and work to get test coverage up.