chore(pluginutils): upgrade TypeScript (#715)

* chore(pluginutils): upgrade TypeScript

* Fix lint errors

* Update ini to fix security check failure

Author: benmccann

.eslintrc.js

@@ -46,5 +46,13 @@ module.exports = {
         plugins: ['prettier-plugin-package']
       }
     ]
-  }
+  },
+  overrides: [
+    {
+      "files": ["**/*.ts"],
+      "rules": {
+        "no-undef": "off"
+      }
+    }
+  ]
 };

packages/pluginutils/package.json

@@ -64,7 +64,8 @@
     "@types/node": "^14.0.26",
     "@types/picomatch": "^2.2.1",
     "acorn": "^8.0.4",
-    "rollup": "^2.23.0"
+    "rollup": "^2.23.0",
+    "typescript": "^4.1.2"
   },
   "types": "types/index.d.ts",
   "ava": {