These tests are intended to be run against the minified compiled version of the firebase binary (i.e. firebase.js and firebase-firestore.js of the firebase package).

The integration test files are modified to replace references to the firebase_export entrypoint with the following declare statement:

declarevarfirebase;

This will help the test files pass the compile step, and will allow us to, at test time, inject the firebase variable into global scope (from the compiled) files, which will be used by the tests.