🤖 chore(package.json): Configure xo.

These changes were automatically generated by a transform whose code can be found at:
  - https://github.com/aureooms/rejuvenate/blob/3361c487f4a9437f3d4eeec1499bf8d09d1f5005/src/transforms/xo:config.js
Please contact the author of the transform if you believe there was an error.

Author: a-flying-potato

package.json

@@ -175,5 +175,22 @@
   },
   "prettier": {
     "trailingComma": "all"
+  },
+  "xo": {
+    "prettier": true,
+    "plugins": [
+      "unicorn"
+    ],
+    "rules": {
+      "unicorn/filename-case": "off"
+    },
+    "overrides": [
+      {
+        "files": [
+          "doc/**"
+        ],
+        "env": "browser"
+      }
+    ]
   }
 }