Disable Fetch for ReactNative (#5643)

Author: schmidt-sebastian

.changeset/tasty-readers-check.md

@@ -0,0 +1,5 @@
+---
+"@firebase/firestore": patch
+---
+
+Change the networking API to use XHR instead of `fetch()` for ReactNative.

packages/firestore/package.json

@@ -20,7 +20,7 @@
     "dev": "rollup -c -w",
     "lint": "eslint -c .eslintrc.js '**/*.ts' --ignore-path '../../.gitignore'",
     "lint:fix": "eslint --fix -c .eslintrc.js '**/*.ts' --ignore-path '../../.gitignore'",
-    "prettier": "prettier --write '*.js' '*.ts' '@(lite|src|test)/**/*.ts'",
+    "prettier": "prettier --write '*.js' '@(lite|src|test)/**/*.ts'",
     "test:lite": "node ./scripts/run-tests.js --emulator --platform node_lite --main=lite/index.ts 'test/lite/**/*.test.ts'",
     "test:lite:prod": "node ./scripts/run-tests.js --platform node_lite --main=lite/index.ts 'test/lite/**/*.test.ts'",
     "test:lite:browser": "karma start --single-run --lite",

packages/firestore/src/index.rn.ts

@@ -17,6 +17,6 @@
 
 import { registerFirestore } from './register';
 
-registerFirestore('rn');
+registerFirestore('rn', /* useFetchStreams= */ false);
 
 export * from './api';

packages/firestore/src/register.ts

@@ -29,7 +29,10 @@ import { setSDKVersion } from '../src/core/version';
 import { Firestore } from './api/database';
 import { PrivateSettings } from './lite-api/settings';
 
-export function registerFirestore(variant?: string): void {
+export function registerFirestore(
+  variant?: string,
+  useFetchStreams = true
+): void {
   setSDKVersion(SDK_VERSION);
   _registerComponent(
     new Component(
@@ -42,7 +45,7 @@ export function registerFirestore(variant?: string): void {
             container.getProvider('auth-internal')
           )
         );
-        settings = { useFetchStreams: true, ...settings };
+        settings = { useFetchStreams, ...settings };
         firestoreInstance._setSettings(settings);
         return firestoreInstance;
       },