Upgrade to latest yarn

package.json

@@ -6,14 +6,14 @@
   "license": "MIT",
   "private": true,
   "dependencies": {
-    "@babel/preset-react": "^7.0.0",
+    "@babel/preset-react": "^7.14.5",
     "parcel": "^1.12.3",
     "react": "^16.7.0",
     "react-dom": "^16.7.0"
   },
   "devDependencies": {
-    "@babel/core": "^7.1.6",
-    "@babel/preset-env": "^7.1.6",
+    "@babel/core": "^7.0.0-0",
+    "@babel/preset-env": "^7.15.6",
     "@babel/preset-react": "^7.0.0",
     "parcel-bundler": "^1.11.0",
     "sass": "^1.16.1"