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Alright - so the new extension emulator code lives on a separate branch: https://github.com/firebase/firebase-tools/tree/launch.extensions-emulator To get that branch running on your machine: If you haven't done so before, git clone https://github.com/firebase/firebase-tools.git Then, go into that directory, and run git checkout launch.extensions-emulator Then, npm i and finally npm link At this point, when you run a firebase command, you'll be using the code from that branch Now, you need to go to a firebase project directory, and add some extensions To do that, go to firebase.json, and add an extensions section, like so:

Kirill Cherkashin, 12:16 PM I did the linking, mostly need help with getting extensions in

Joe Hanley, 12:17 PM "extensions": { "translate": "firebase/firestore-translate-text", "httptest": "joehanley/[email protected]", }

Joe Hanley, 12:18 PM, Edited Then, you need to create {instanceId}.env files to configure each extension, and place them in the 'extensions' directory of your firebase project directory So, for example: extensions/translate.env:LOCATION=us-west1 LANGUAGES=en,es,de,fr COLLECTION_PATH=translations INPUT_FIELD_NAME=input OUTPUT_FIELD_NAME=translated and extensions/httptest.env:LOCATION=us-west1 GREETING=hey what's up

Joe Hanley, 12:21 PM, Edited At the end, you should have a directory structure that looks like:- firebase.json

• extensions/ ---- translate.env ---- httptest.env Then you can just run the usual emulators commands, and it will download + spin up your extensions BTW - make sure you pull the latest changes from the launch.extensions-emulator branch - I merged in some changes from master yesterday evening, and broke things, and I just fixed them this morning