Hermes: Adding an index.native.js (#4461)

* Ading an index.native.js to help bundlers

* Adding a note to the changelog

CHANGELOG.md

@@ -6,6 +6,7 @@ x.x.x Release notes (yyyy-MM-dd)
 ### Fixed
 * Logging out too fast can cause an error if the timeout behavior is set to `openLocalRealm` ([4453](https://github.com/realm/realm-js/issues/4453))
 * Released `realm-network-transport` to adopt the changes published to fix `globalThis` undefined issue for older devices. ([#4350](https://github.com/realm/realm-js/4350))
+* Changed "react-native" main field to point to a `lib/index.native.js` file to help bundlers pick the right file when loading our library on React Native. ([#4459](https://github.com/realm/realm-js/issues/4459))
 
 ### Compatibility
 * MongoDB Realm Cloud.
@@ -4409,4 +4410,4 @@ Old files can still be opened and files open in read-only mode will not be modif
 0.10.0 Release notes (2016-2-22)
 =============================================================
 ### Enhancements
-* Initial Release
+* Initial Release

lib/index.native.js

@@ -0,0 +1,20 @@
+////////////////////////////////////////////////////////////////////////////
+//
+// Copyright 2022 Realm Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+////////////////////////////////////////////////////////////////////////////
+
+const { Realm } = require("./react-native");
+module.exports = Realm;

lib/react-native/index.js

@@ -18,6 +18,9 @@
 
 import { Platform, NativeModules } from "react-native";
 
+import utils from "../utils";
+import extend from "../extensions";
+
 //switch how babel transpiled code creates children objects.
 //Inheriting from Realm.Object with class syntax does not support using Reflect.construct the way babel transpiles it.
 //Defining Reflect.construct.sham makes the transpiled code use different standard mechanism for inheriting. (Function.apply with setPrototypeOf)
@@ -39,7 +42,7 @@ if (Platform.OS === "android") {
 
 // TODO: Remove the need to store Realm as a global
 // @see https://github.com/realm/realm-js/issues/2126
-const Realm = globalThis.Realm;
+export const Realm = globalThis.Realm;
 
 // Otherwise, we must be in a "normal" react native situation.
 // In that case, the Realm type should have been injected by the native code.
@@ -50,10 +53,7 @@ if (typeof Realm === "undefined") {
   );
 }
 
-require("../extensions")(Realm);
+extend(Realm);
 
-const utils = require("../utils");
 const versions = utils.getVersions();
 Realm.App._setVersions(versions);
-
-module.exports = Realm;

package.json

@@ -31,7 +31,7 @@
   },
   "types": "types/index.d.ts",
   "main": "lib/index.js",
-  "react-native": "lib/react-native/index.js",
+  "react-native": "lib/index.native.js",
   "files": [
     "cmake",
     "lib",
@@ -162,4 +162,4 @@
       4
     ]
   }
-}
+}