[REQUIRED] Environment info

firebase-tools:
9.2.1

Platform:
macOS

[REQUIRED] Test case

1. Unzip, and run firebase emulators:start --only hosting --project your-project-id from within the directory
2. Load http://localhost:5000/
3. GET http://localhost:5000/__/firebase/8.2.3/firebase-app.js net::ERR_CONTENT_DECODING_FAILED 200 (OK)

firebase-issue-3041.zip - same repro files as #3041

[REQUIRED] Steps to reproduce

1. Make index.html which contains:

<script src="/__/firebase/8.2.3/firebase-app.js"></script>
<script src="/__/firebase/8.2.3/firebase-analytics.js"></script>
<script src="/__/firebase/init.js"></script>

2. Start the hosting emulator:

firebase emulators:start --only hosting

3. Load http://localhost:5000/ and inspect javascript errors

[REQUIRED] Expected behavior

firebase-app.js loads correctly

[REQUIRED] Actual behavior

GET http://localhost:5000/__/firebase/8.2.3/firebase-app.js net::ERR_CONTENT_DECODING_FAILED 200 (OK)

This does not seem to happen in production and only affects the emulator's response of the firebase libraries.