Fixed an additional unmount edge case. Moved hook into temporary package.

Author: Brian Vaughn

packages/create-subscription/index.js

@@ -10,4 +10,3 @@
 'use strict';
 
 export * from './src/createSubscription';
-export * from './src/useSubscription';

packages/react-hooks/README.md

@@ -0,0 +1,3 @@
+# react-hooks
+
+Placeholder package.

packages/react-hooks/index.js

@@ -0,0 +1,12 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @flow
+ */
+
+'use strict';
+
+export * from './src/useSubscription';

packages/react-hooks/npm/index.js

@@ -0,0 +1,7 @@
+'use strict';
+
+if (process.env.NODE_ENV === 'production') {
+  module.exports = require('./cjs/react-hooks.production.min.js');
+} else {
+  module.exports = require('./cjs/react-hooks.development.js');
+}

packages/react-hooks/package.json

@@ -0,0 +1,24 @@
+{
+  "private": true,
+  "name": "react-hooks",
+  "description": "Reusable hooks",
+  "version": "16.8.3",
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/facebook/react.git",
+    "directory": "packages/react-hooks"
+  },
+  "files": [
+    "LICENSE",
+    "README.md",
+    "build-info.json",
+    "index.js",
+    "cjs/"
+  ],
+  "peerDependencies": {
+    "react": "^16.3.0"
+  },
+  "devDependencies": {
+    "rxjs": "^5.5.6"
+  }
+}

packages/create-subscription/src/__tests__/useSubscription-test.internal.js packages/react-hooks/src/__tests__/useSubscription-test.internal.js

@@ -22,7 +22,7 @@ describe('useSubscription', () => {
     jest.resetModules();
     jest.mock('scheduler', () => require('scheduler/unstable_mock'));
 
-    useSubscription = require('create-subscription').useSubscription;
+    useSubscription = require('react-hooks').useSubscription;
     React = require('react');
     ReactTestRenderer = require('react-test-renderer');
     Scheduler = require('scheduler');