Add lint:es-compatibility to integration-shims

Author: andreiborza

packages/integration-shims/package.json

@@ -43,7 +43,8 @@
     "build:types:watch": "tsc -p tsconfig.types.json --watch",
     "clean": "rimraf build",
     "fix": "eslint . --format stylish --fix",
-    "lint": "eslint . --format stylish"
+    "lint": "eslint . --format stylish",
+    "lint:es-compatibility": "es-check es2020 ./build/cjs/*.js && es-check es2020 ./build/esm/*.js --module"
   },
   "repository": {
     "type": "git",