rename value_type to valueType (#164)

Author: laurenzlong

package.json

@@ -38,7 +38,7 @@
     "@types/sinon": "^1.16.29",
     "chai": "^3.5.0",
     "chai-as-promised": "^5.2.0",
-    "firebase-admin": "https://storage.googleapis.com/functions-dev-preview/firebase-admin-5.2.2-firestore.tgz",
+    "firebase-admin": "https://storage.googleapis.com/functions-dev-preview/firebase-admin-5.4.0-rc.tgz",
     "istanbul": "^0.4.2",
     "mocha": "^2.4.5",
     "mock-require": "^2.0.1",
@@ -48,7 +48,7 @@
     "typescript": "^2.0.3"
   },
   "peerDependencies": {
-    "firebase-admin": "https://storage.googleapis.com/functions-dev-preview/firebase-admin-5.2.2-firestore.tgz"
+    "firebase-admin": "https://storage.googleapis.com/functions-dev-preview/firebase-admin-5.4.0-rc.tgz"
   },
   "dependencies": {
     "@types/express": "^4.0.33",

src/providers/firestore.ts

@@ -141,7 +141,7 @@ function convertToFieldsProto(fields): object {
       } else {
         dataPart = data;
       }
-      result = _.merge({}, dataPart, {value_type: valueType});
+      result = _.merge({}, dataPart, {valueType: valueType});
     });
     return result;
   }