test: Fail CI if prettier wasn't run

Author: eps1lon

.github/workflows/validate.yml

@@ -38,6 +38,10 @@ jobs:
         with:
           useLockFile: false
 
+      # TODO: Can be removed if https://github.com/kentcdodds/kcd-scripts/pull/146 is released
+      - name: Verify format (`npm run format` committed?)
+        run: npm run format -- --check
+
       - name: ▶️ Run validate script
         run: npm run validate
 

package.json

@@ -25,6 +25,7 @@
   },
   "scripts": {
     "build": "kcd-scripts build  --no-ts-defs --ignore \"**/__tests__/**,**/__node_tests__/**,**/__mocks__/**\" && kcd-scripts build --no-ts-defs --bundle --no-clean",
+    "format": "kcd-scripts format",
     "lint": "kcd-scripts lint",
     "setup": "npm install && npm run validate -s",
     "test": "kcd-scripts test",