- https://techlife.cookpad.com/entry/2018/11/05/143000
- https://github.com/sgr-ksmt/firestore-emulator-rules-test
- https://github.com/firebase/quickstart-nodejs/tree/master/firestore-emulator/typescript-quickstart
npm install -g firebase-tools
firebase setup:emulators:firestore
java -version
If Java runtime does not present, you needs to install.
firebase emulators:start --only firestore
npm run test
firebase emulators:exec --only firestore "npm run test"