Fix Node tests

Author: schmidt-sebastian

packages/firestore/package.json

@@ -20,8 +20,8 @@
     "test:all": "run-p test:browser test:travis test:minified",
     "test:browser": "karma start --single-run",
     "test:browser:debug": "karma start --browsers=Chrome --auto-watch",
-    "test:node": "FIRESTORE_EMULATOR_PORT=8080 FIRESTORE_EMULATOR_PROJECT_ID=test-emulator TS_NODE_CACHE=NO TS_NODE_COMPILER_OPTIONS='{\"module\":\"commonjs\"}' nyc --reporter lcovonly -- mocha 'test/{,!(browser)/**/}*.test.ts' --file index.node.ts --opts ../../config/mocha.node.opts",
-    "test:node:prod": "TS_NODE_CACHE=NO TS_NODE_COMPILER_OPTIONS='{\"module\":\"commonjs\"}' nyc --reporter lcovonly -- mocha 'test/{,!(browser)/**/}*.test.ts' --file index.node.ts --opts ../../config/mocha.node.opts",
+    "test:node": "FIRESTORE_EMULATOR_PORT=8080 FIRESTORE_EMULATOR_PROJECT_ID=test-emulator TS_NODE_CACHE=NO TS_NODE_COMPILER_OPTIONS='{\"module\":\"commonjs\"}' nyc --reporter lcovonly -- mocha 'test/{,!(browser)/**/}*.test.ts' --file index.node.ts --file test/util/node_persistence.ts --opts ../../config/mocha.node.opts",
+    "test:node:prod": "TS_NODE_CACHE=NO TS_NODE_COMPILER_OPTIONS='{\"module\":\"commonjs\"}' nyc --reporter lcovonly -- mocha 'test/{,!(browser)/**/}*.test.ts' --file index.node.ts --file test/util/node_persistence.ts --opts ../../config/mocha.node.opts",
     "test:node:persistence": "FIRESTORE_EMULATOR_PORT=8080 FIRESTORE_EMULATOR_PROJECT_ID=test-emulator USE_MOCK_PERSISTENCE=YES TS_NODE_CACHE=NO TS_NODE_COMPILER_OPTIONS='{\"module\":\"commonjs\"}' nyc --reporter lcovonly -- mocha 'test/{,!(browser)/**/}*.test.ts' --require ts-node/register --require index.node.ts --require test/util/node_persistence.ts --opts ../../config/mocha.node.opts",
     "test:node:persistence:prod": "USE_MOCK_PERSISTENCE=YES TS_NODE_CACHE=NO TS_NODE_COMPILER_OPTIONS='{\"module\":\"commonjs\"}' nyc --reporter lcovonly -- mocha 'test/{,!(browser)/**/}*.test.ts' --require ts-node/register --require index.node.ts --require test/util/node_persistence.ts --opts ../../config/mocha.node.opts",
     "test:travis": "ts-node --compiler-options='{\"module\":\"commonjs\"}' ../../scripts/emulator-testing/firestore-test-runner.ts",