ok

package-lock.json

@@ -18,6 +18,9 @@
         "react-scripts": "5.0.1",
         "socket.io-client": "^4.8.1",
         "web-vitals": "^2.1.4"
+      },
+      "devDependencies": {
+        "cross-env": "^10.0.0"
       }
     },
     "node_modules/@adobe/css-tools": {
@@ -2381,6 +2384,13 @@
         "postcss-selector-parser": "^6.0.10"
       }
     },
+    "node_modules/@epic-web/invariant": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/@epic-web/invariant/-/invariant-1.0.0.tgz",
+      "integrity": "sha512-lrTPqgvfFQtR/eY/qkIzp98OGdNJu0m5ji3q/nJI8v3SXkRKEnWiOxMmbvcSoAIzv/cGiuvRy57k4suKQSAdwA==",
+      "dev": true,
+      "license": "MIT"
+    },
     "node_modules/@eslint-community/eslint-utils": {
       "version": "4.7.0",
       "resolved": "https://registry.npmjs.org/@eslint-community/eslint-utils/-/eslint-utils-4.7.0.tgz",
@@ -5986,6 +5996,24 @@
         "node": ">=10"
       }
     },
+    "node_modules/cross-env": {
+      "version": "10.0.0",
+      "resolved": "https://registry.npmjs.org/cross-env/-/cross-env-10.0.0.tgz",
+      "integrity": "sha512-aU8qlEK/nHYtVuN4p7UQgAwVljzMg8hB4YK5ThRqD2l/ziSnryncPNn7bMLt5cFYsKVKBh8HqLqyCoTupEUu7Q==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@epic-web/invariant": "^1.0.0",
+        "cross-spawn": "^7.0.6"
+      },
+      "bin": {
+        "cross-env": "dist/bin/cross-env.js",
+        "cross-env-shell": "dist/bin/cross-env-shell.js"
+      },
+      "engines": {
+        "node": ">=20"
+      }
+    },
     "node_modules/cross-spawn": {
       "version": "7.0.6",
       "resolved": "https://registry.npmjs.org/cross-spawn/-/cross-spawn-7.0.6.tgz",

package.json

@@ -15,7 +15,7 @@
     "web-vitals": "^2.1.4"
   },
   "scripts": {
-    "start": "PORT=3002 react-scripts start",
+    "start": "cross-env PORT=3002 react-scripts start",
     "build": "react-scripts build",
     "test": "react-scripts test",
     "eject": "react-scripts eject"
@@ -37,5 +37,8 @@
       "last 1 firefox version",
       "last 1 safari version"
     ]
+  },
+  "devDependencies": {
+    "cross-env": "^10.0.0"
   }
 }