🤖 chore(package.json): Configure xo.

These changes were automatically generated by a transform whose code can be found at:
  - https://github.com/make-github-pseudonymous-again/rejuvenate/blob/a44c42967442d65fd14272682fb84a6f32feb841/src/transforms/xo:config.js
Please contact the author of the transform if you believe there was an error.

package.json

@@ -183,5 +183,28 @@
   },
   "prettier": {
     "trailingComma": "all"
+  },
+  "xo": {
+    "prettier": true,
+    "plugins": [
+      "unicorn"
+    ],
+    "rules": {
+      "unicorn/filename-case": "off",
+      "camelcase": "off",
+      "unicorn/prevent-abbreviations": "off",
+      "no-constant-condition": "off",
+      "unicorn/prefer-math-trunc": "off",
+      "unicorn/no-new-array": "off",
+      "no-negated-condition": "off"
+    },
+    "overrides": [
+      {
+        "files": [
+          "doc/**"
+        ],
+        "env": "browser"
+      }
+    ]
   }
 }