Install sinon dev dependency

Author: tanx

mobile/package-lock.json

@@ -3,17 +3,18 @@
   "version": "0.1.0",
   "private": true,
   "devDependencies": {
-    "jest-expo": "~27.0.0",
-    "prop-types": "15.6.1",
-    "react-native-scripts": "1.14.0",
-    "react-test-renderer": "16.3.1",
-    "@storybook/react-native": "^3.4.10",
     "@storybook/addon-actions": "^3.4.10",
     "@storybook/addon-links": "^3.4.10",
     "@storybook/addons": "^3.4.10",
+    "@storybook/react-native": "^3.4.10",
     "babel-core": "^6.26.3",
     "babel-runtime": "^6.26.0",
-    "react-dom": "16.3.1"
+    "jest-expo": "~27.0.0",
+    "prop-types": "15.6.1",
+    "react-dom": "16.3.1",
+    "react-native-scripts": "1.14.0",
+    "react-test-renderer": "16.3.1",
+    "sinon": "^6.1.5"
   },
   "main": "./node_modules/react-native-scripts/build/bin/crna-entry.js",
   "scripts": {

mobile/package.json

@@ -14,6 +14,7 @@ module.exports = {
     'qr-image': path.resolve(__dirname, 'node_modules/qr-image'),
     stream: path.resolve(__dirname, 'node_modules/readable-stream'),
     zlib: path.resolve(__dirname, 'node_modules/browserify-zlib'),
+    sinon: path.resolve(__dirname, 'node_modules/sinon'),
   },
   getProjectRoots: () => [
     path.resolve(__dirname),