Merge pull request #20482 from Methuselah96/patch-2

Make eslint rule an error instead of a warning

Author: mrdoob

package.json

@@ -34,7 +34,7 @@
       "@typescript-eslint"
     ],
     "rules": {
-      "@typescript-eslint/no-unused-vars": 1,
+      "@typescript-eslint/no-unused-vars": ["error"],
       "@typescript-eslint/indent": [
         "error",
         "tab",