Yarn upgrade

package.json

@@ -93,10 +93,10 @@
     "opener": "^1.5.1",
     "prettier": "^1.16.1",
     "prop-types": "^15.6.2",
-    "react": "^16.8.0-alpha.1",
+    "react": "^16.8",
     "react-color": "^2.11.7",
-    "react-dom": "^16.8.0-alpha.1",
-    "react-is": "^16.8.0-alpha.1",
+    "react-dom": "^16.8",
+    "react-is": "^16.8",
     "react-portal": "^3.1.0",
     "react-virtualized-auto-sizer": "^1.0.2",
     "react-window": "^1.5.1",

shells/browser/shared/src/panels/utils.js

@@ -1,7 +1,7 @@
 /* global chrome */
 
 import { createElement } from 'react';
-import { createRoot, flushSync } from 'react-dom';
+import { unstable_createRoot as createRoot, flushSync } from 'react-dom';
 import DevTools from 'src/devtools/views/DevTools';
 import { getBrowserName, getBrowserTheme } from '../utils';
 

shells/dev/app/ElementTypes/index.js

@@ -6,10 +6,11 @@ import React, {
   lazy,
   memo,
   Component,
-  ConcurrentMode,
+  // $FlowFixMe Flow thinks ConcurrentMode is stable
+  unstable_ConcurrentMode as ConcurrentMode,
   Fragment,
   // $FlowFixMe Flow doesn't know about the Profiler import yet
-  Profiler,
+  unstable_Profiler as Profiler,
   StrictMode,
   Suspense,
 } from 'react';

shells/dev/src/devtools.js

@@ -2,7 +2,7 @@
 
 import { createElement } from 'react';
 // $FlowFixMe Flow does not yet know about createRoot()
-import { createRoot } from 'react-dom';
+import { unstable_createRoot as createRoot } from 'react-dom';
 import Bridge from 'src/bridge';
 import { installHook } from 'src/hook';
 import { initDevTools } from 'src/devtools';