Upgrade fbjs-scripts (facebook#18684)

* Upgrade fbjs-scripts

This script takes into account the NODE_ENV as part of jest cache keys.
This avoids flaky tests since we depend on different transforms in prod
and dev.

* Upgrade Fresh test to Babel 7 transform

Author: sebmarkbage

package.json

@@ -56,7 +56,7 @@
     "eslint-plugin-no-for-of-loops": "^1.0.0",
     "eslint-plugin-react": "^6.7.1",
     "eslint-plugin-react-internal": "link:./scripts/eslint-rules",
-    "fbjs-scripts": "0.8.3",
+    "fbjs-scripts": "1.2.0",
     "filesize": "^6.0.1",
     "flow-bin": "0.97",
     "glob": "^7.1.6",

packages/react-refresh/src/__tests__/ReactFreshBabelPlugin-test.js

@@ -415,7 +415,7 @@ describe('ReactFreshBabelPlugin', () => {
         }
     `,
         {
-          plugins: ['transform-es2015-modules-commonjs'],
+          plugins: ['@babel/transform-modules-commonjs'],
         },
       ),
     ).toMatchSnapshot();

packages/react-refresh/src/__tests__/__snapshots__/ReactFreshBabelPlugin-test.js.snap

@@ -289,13 +289,12 @@ exports[`ReactFreshBabelPlugin includes custom hooks into the signatures when co
 Object.defineProperty(exports, "__esModule", {
   value: true
 });
-
-var _s = $RefreshSig$();
-
 exports.default = App;
 
 var _hooks = require("./hooks");
 
+var _s = $RefreshSig$();
+
 function App() {
   _s();