diff --git a/package-lock.json b/package-lock.json
index 06cc308..b7d72ba 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -14,7 +14,7 @@
         "@tanstack/react-query": "^5.104.0",
         "framer-motion": "^11.0.0",
         "next": "14.2.35",
-        "react": "^18",
+        "react": "^19",
         "react-dom": "^19",
         "zod": "^4.6.5",
         "zustand": "^5.0.15"
@@ -27,7 +27,7 @@
         "@testing-library/react": "^16.0.0",
         "@testing-library/user-event": "^14.5.2",
         "@types/node": "^22.12.0",
-        "@types/react": "^18",
+        "@types/react": "^19",
         "@types/react-dom": "^19",
         "@vitejs/plugin-react": "^6.1.1",
         "@vitest/coverage-v8": "^5.0.2",
@@ -3953,21 +3953,13 @@
         "undici-types": "~6.21.0"
       }
     },
-    "node_modules/@types/prop-types": {
-      "version": "15.7.15",
-      "resolved": "https://registry.npmjs.org/@types/prop-types/-/prop-types-15.7.15.tgz",
-      "integrity": "sha512-F6bEyamV9jKGAFBEmlQnesRPGOQqS2+Uwi0Em15xenOxHaf2hv6L8YCVn3rPdPJOiJfPiCnLIRyvwVaqMY3MIw==",
-      "devOptional": true,
-      "license": "MIT"
-    },
     "node_modules/@types/react": {
-      "version": "18.3.31",
-      "resolved": "https://registry.npmjs.org/@types/react/-/react-18.3.31.tgz",
-      "integrity": "sha512-vfEqpXTvwT91yhmwdfouStN2hSKwTvyRs8qpLfADyrq/kxDw0hZM7Wk9Ug1FELj8hIby+S/+kQCSRFF32nv2Qw==",
+      "version": "19.3.0",
+      "resolved": "https://registry.npmjs.org/@types/react/-/react-19.3.0.tgz",
+      "integrity": "sha512-N0rFCuH9YoxG9/m61l9MfpJKfmLOVU0em7ipIz6TRgSSkvReLB9vL85GB+yr8Bs5leqpvg96JSwF4ZS1s4viQg==",
       "devOptional": true,
       "license": "MIT",
       "dependencies": {
-        "@types/prop-types": "*",
         "csstype": "^3.2.2"
       }
     },
@@ -3978,7 +3970,7 @@
       "dev": true,
       "license": "MIT",
       "peerDependencies": {
-        "@types/react": "^19.3.0"
+        "@types/react": "^19"
       }
     },
     "node_modules/@types/stack-utils": {
@@ -9897,6 +9889,7 @@
       "version": "4.0.0",
       "resolved": "https://registry.npmjs.org/js-tokens/-/js-tokens-4.0.0.tgz",
       "integrity": "sha512-RdJUflcE3cUzKiMqQgsCu06FPu9UdIJO0beYbPhHN4k6apgJtifcoCtT9bcxOpYBtpD2kCM6Sbzg4CausW/PKQ==",
+      "devOptional": true,
       "license": "MIT"
     },
     "node_modules/jsdom": {
@@ -10847,6 +10840,7 @@
       "version": "1.4.0",
       "resolved": "https://registry.npmjs.org/loose-envify/-/loose-envify-1.4.0.tgz",
       "integrity": "sha512-lyuxPGr/Wfhrlem2CL/UcnUc1zcqKAImBDzukY7Y5F/yQiNdko6+fRLevlw1HgMySw7f611UIY408EtxRSoK3Q==",
+      "dev": true,
       "license": "MIT",
       "dependencies": {
         "js-tokens": "^3.0.0 || ^4.0.0"
@@ -12330,13 +12324,10 @@
       "license": "MIT"
     },
     "node_modules/react": {
-      "version": "18.3.1",
-      "resolved": "https://registry.npmjs.org/react/-/react-18.3.1.tgz",
-      "integrity": "sha512-wS+hAgJShR0KhEvPJArfuPVN1+Hz1t0Y6n5jLrGQbkb4urgPE/0Rve+1kMB1v/oWgHgm4WIcV+i7F2pTVj+2iQ==",
+      "version": "19.3.1",
+      "resolved": "https://registry.npmjs.org/react/-/react-19.3.1.tgz",
+      "integrity": "sha512-QNhWdt7nrgVWWQG58QuGsAR3jv3Hbe4mb4vz7w2csnHavciZJgda1CPNaldF6eVxv90ud3jUXpKlHL69gO38yw==",
       "license": "MIT",
-      "dependencies": {
-        "loose-envify": "^1.1.0"
-      },
       "engines": {
         "node": ">=0.10.0"
       }
@@ -12350,7 +12341,7 @@
         "scheduler": "^0.28.0"
       },
       "peerDependencies": {
-        "react": "^19.3.1"
+        "react": "^19"
       }
     },
     "node_modules/react-is": {
diff --git a/package.json b/package.json
index b6ca524..f6dadab 100644
--- a/package.json
+++ b/package.json
@@ -14,7 +14,7 @@
     "test:coverage": "vitest run --config vitest.config.mts --coverage",
     "test:chaos": "vitest run --config vitest.config.mts src/lib/realtime/__tests__/chaos.test.ts src/lib/realtime/__tests__/transportParity.test.ts",
     "test:chaos:e2e": "NEXT_PUBLIC_ENABLE_UI_GALLERY=true playwright test e2e/realtime-chaos.spec.ts --project=chromium",
-    "mock:realtime": "npx --yes tsx scripts/mock-realtime-server.ts",
+    "mock:realtime": "node scripts/mock-realtime-server.mjs",
     "bench:realtime": "npx --yes tsx scripts/realtime-decode-bench.mts",
     "test:visual": "playwright test --project=visual",
     "test:visual:update": "playwright test --project=visual --update-snapshots",
@@ -27,8 +27,7 @@
     "tokens:check": "node scripts/check-tokens.mjs",
     "gen:realtime-types": "node scripts/gen-realtime-types.mjs",
     "check:realtime-types": "node scripts/gen-realtime-types.mjs --check",
-    "realtime:benchmark": "node scripts/realtime-benchmark.mjs",
-    "mock:realtime": "node scripts/mock-realtime-server.mjs"
+    "realtime:benchmark": "node scripts/realtime-benchmark.mjs"
   },
   "lint-staged": {
     "*.{ts,tsx}": [
@@ -43,7 +42,7 @@
     "@tanstack/react-query": "^5.104.0",
     "framer-motion": "^11.0.0",
     "next": "14.2.35",
-    "react": "^18",
+    "react": "^19",
     "react-dom": "^19",
     "zod": "^4.6.5",
     "zustand": "^5.0.15"
@@ -56,7 +55,7 @@
     "@testing-library/react": "^16.0.0",
     "@testing-library/user-event": "^14.5.2",
     "@types/node": "^22.12.0",
-    "@types/react": "^18",
+    "@types/react": "^19",
     "@types/react-dom": "^19",
     "@vitejs/plugin-react": "^6.1.1",
     "@vitest/coverage-v8": "^5.0.2",