build: fix Amazon issue #7098.

Use aws-amplify@unstable,
and include global.crypto = require('crypto') at the top of signin modules.

aws-amplify/amplify-js#7098

package.json

@@ -3,16 +3,33 @@
   "version": "0.1.0",
   "private": true,
   "dependencies": {
+    "@aws-amplify/analytics": "^3.3.10",
+    "@aws-amplify/api": "^3.0.0",
+    "@aws-amplify/auth": "^3.0.0",
+    "@aws-amplify/core": "^3.0.0",
+    "@aws-amplify/interactions": "^3.0.0",
+    "@aws-amplify/storage": "^3.0.0",
+    "@aws-amplify/ui": "^2.0.0",
     "@aws-amplify/ui-react": "^0.2.27",
+    "@aws-amplify/xr": "^2.0.0",
+    "@babel/core": "*",
+    "@react-native-community/netinfo": "^5.5.0",
+    "@testing-library/dom": "^7.26.5",
     "@testing-library/jest-dom": "^4.2.4",
     "@testing-library/react": "^9.5.0",
     "@testing-library/user-event": "^7.1.2",
     "@types/aws-serverless-express": "^3.3.3",
-    "aws-amplify": "^3.3.7",
+    "amazon-cognito-identity-js": "^4.4.0",
+    "aws-amplify": "^3.3.8-unstable.2",
+    "aws-amplify-react": "^4.2.11",
+    "core-js": "^3",
+    "crypto-js": "^3.2.1",
     "react": "^16.14.0",
     "react-dom": "^16.14.0",
+    "react-native": "^0.63.3",
     "react-scripts": "^3.4.4",
-    "react-table": "^7.6.1"
+    "react-table": "^7.6.1",
+    "typescript": "^4.0.5"
   },
   "scripts": {
     "start": "react-scripts start",

src/BackendApi.js

@@ -1,9 +1,13 @@
+/* eslint-disable import/first */
 //
 // Wrapper for backend API
 // (Includes a null version constructor)
 //
 // BackendApi: Getting things from the backend and presenting it in a convenient way.
 //
+
+// needed to fix amplify signin
+global.crypto = require('crypto');
 import Amplify, { Auth, API } from 'aws-amplify';
 import awsconfig from './aws-exports';
 
@@ -58,7 +62,8 @@ export default class BackendApi {
         try {
             await this._auth.signIn(username, password);
         } catch (error) {
-            console.log('error signing in', error);
+            console.log('Error signing in.');
+            console.log(error);
         }
     }
 

src/BackendApi.test.js

@@ -1,4 +1,6 @@
-// import { findAllByAltText } from '@testing-library/react';
+// needed to fix amplify signin
+global.crypto = require('crypto');
+// eslint-disable-next-line import/first
 import BackendApi from './BackendApi';
 
 test('setPortfolio reports okay', () => {