fix: response body object should not be disturbed or locked (#36)

* fix: response body object should not be disturbed or locked

* fixup! fix: response body object should not be disturbed or locked

Author: himself65

package.json

@@ -25,10 +25,16 @@
   "devDependencies": {
     "@arethetypeswrong/cli": "^0.16.4",
     "@biomejs/biome": "^1.8.3",
+    "@types/body-parser": "^1.19.6",
     "@types/bun": "latest",
+    "@types/express": "^5.0.3",
     "@types/set-cookie-parser": "^2.4.10",
+    "@types/supertest": "^6.0.3",
     "arktype": "^2.0.0",
+    "body-parser": "^2.2.0",
     "bumpp": "^9.4.1",
+    "express": "^5.1.0",
+    "supertest": "^7.1.4",
     "tsup": "^8.3.5",
     "type-fest": "^4.23.0",
     "typescript": "^5.6.0-beta",