cleanup type_spec, allow unused-vars for args (#4759)

* cleanup type_spec, allow unused-vars for args

* fix missing return

* fix missing return 2

* Revert "fix missing return 2"

This reverts commit f5f01e7.

* Revert "Revert "fix missing return 2""

This reverts commit 1c4cbf7.

* bump @cypress/eslint-plugin-dev

Author: kuceb

package.json

@@ -66,7 +66,7 @@
     "@cypress/bumpercar": "2.0.9",
     "@cypress/commit-message-install": "2.7.0",
     "@cypress/env-or-json-file": "2.0.0",
-    "@cypress/eslint-plugin-dev": "3.5.0",
+    "@cypress/eslint-plugin-dev": "3.6.0",
     "@cypress/eslint-plugin-json": "3.2.1",
     "@cypress/github-commit-status-check": "1.5.0",
     "@cypress/npm-run-all": "4.0.5",