[firestore] Correctly support dates, GeoPoints and other types in where clause

lib/modules/firestore/Query.js

@@ -5,6 +5,7 @@
 import DocumentSnapshot from './DocumentSnapshot';
 import Path from './Path';
 import QuerySnapshot from './QuerySnapshot';
+import { buildTypeMap } from './utils/serialize';
 import { firestoreAutoId, isFunction, isObject } from '../../utils';
 
 const DIRECTIONS = {
@@ -261,10 +262,11 @@ export default class Query {
     // TODO: Validation
     // validate.isFieldPath('fieldPath', fieldPath);
     // validate.isFieldFilter('fieldFilter', opStr, value);
+    const nativeValue = buildTypeMap(value);
     const newFilter = {
       fieldPath,
       operator: OPERATORS[opStr],
-      value,
+      value: nativeValue,
     };
     const combinedFilters = this._fieldFilters.concat(newFilter);
     return new Query(this.firestore, this._referencePath, combinedFilters,

lib/modules/firestore/utils/serialize.js

@@ -37,7 +37,7 @@ const buildNativeArray = (array: Object[]): any[] => {
   return nativeArray;
 };
 
-const buildTypeMap = (value: any): any => {
+export const buildTypeMap = (value: any): any => {
   const typeMap = {};
   const type = typeOf(value);
   if (value === null || value === undefined) {