feat: add jest snapshot formatter to help normalize whitespace + generate better diffs in the console

Author: sghoweri

jest.config.js

@@ -12,6 +12,7 @@ module.exports = {
   ],
   testEnvironment: 'node',
   globalSetup: './jest-global-setup.js',
+  snapshotSerializers: ['jest-serializer-html'],
   // Notify not working correctly; we want to only get a notification when tests fail, and then get ONE success notificaiton after it passes
   // notify: true,
   // notifyMode: 'failure-success',

package.json

@@ -49,7 +49,8 @@
   "dependencies": {
     "sassdoc": "^2.5.0",
     "npm-run-all": "^4.1.5",
-    "jest": "^23.5.0"
+    "jest": "^23.6.0",
+    "jest-serializer-html": "^5.0.0"
   },
   "devDependencies": {
     "editorconfig-checker": "^1.3.3",