Add support for null value in data snapshot (https://github.com/firebase/firebase-functions-test/issues/48), added unit tests for creating Firestore DocumentSnapshot and RTDB DataSnapshot, also updated dependencies to more modern versions. (Note: peer dependencies are updated less aggressively than dev dependencies, since dev dependencies are what a contributor of this library must install, whereas peer dependencies are what users of this library must use)
Description
Add support for null value in data snapshot (https://github.com/firebase/firebase-functions-test/issues/48), added unit tests for creating Firestore DocumentSnapshot and RTDB DataSnapshot, also updated dependencies to more modern versions. (Note: peer dependencies are updated less aggressively than dev dependencies, since dev dependencies are what a contributor of this library must install, whereas peer dependencies are what users of this library must use)
Code sample