Update all of react 18.3.1 → 19.0.0 (major) (#15586)

Here is everything you need to know about this upgrade. Please take a
good look at what changed and the test results before merging this pull
request.

### What changed?




#### ✳️ react (18.3.1 → 19.0.0) ·
[Repo](https://github.com/facebook/react) ·
[Changelog](https://github.com/facebook/react/blob/main/CHANGELOG.md)



<details>
<summary>Release Notes</summary>
<h4><a
href="https://github.com/facebook/react/releases/tag/v19.0.0">19.0.0</a></h4>

<blockquote><em>More info than we can show here.</em></blockquote>
<p><em>Does any of this look wrong? <a
href="https://depfu.com/packages/npm/react/feedback">Please let us
know.</a></em></p>
</details>

<details>
<summary>Commits</summary>
<p><a
href="https://github.com/facebook/react/compare/f1338f8080abd1386454a10bbf93d67bfe37ce85...7aa5dda3b3e4c2baa905a59b922ae7ec14734b24">See
the full diff on Github</a>. The new version differs by more commits
than we can show here.</p>
</details>




#### ✳️ react-dom (18.3.1 → 19.0.0) ·
[Repo](https://github.com/facebook/react) ·
[Changelog](https://github.com/facebook/react/blob/main/CHANGELOG.md)



<details>
<summary>Release Notes</summary>
<h4><a
href="https://github.com/facebook/react/releases/tag/v19.0.0">19.0.0</a></h4>

<blockquote><em>More info than we can show here.</em></blockquote>
<p><em>Does any of this look wrong? <a
href="https://depfu.com/packages/npm/react-dom/feedback">Please let us
know.</a></em></p>
</details>

<details>
<summary>Commits</summary>
<p><a
href="https://github.com/facebook/react/compare/f1338f8080abd1386454a10bbf93d67bfe37ce85...7aa5dda3b3e4c2baa905a59b922ae7ec14734b24">See
the full diff on Github</a>. The new version differs by more commits
than we can show here.</p>
</details>












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playgrounds/nextjs/package.json

@@ -12,8 +12,8 @@
     "@tailwindcss/postcss": "workspace:^",
     "fast-glob": "^3.3.2",
     "next": "15.1.3",
-    "react": "^18.3.1",
-    "react-dom": "^18.3.1",
+    "react": "^19.0.0",
+    "react-dom": "^19.0.0",
     "tailwindcss": "workspace:^"
   },
   "devDependencies": {

playgrounds/v3/package.json

@@ -10,8 +10,8 @@
   },
   "dependencies": {
     "next": "15.1.3",
-    "react": "^18.3.1",
-    "react-dom": "^18.3.1",
+    "react": "^19.0.0",
+    "react-dom": "^19.0.0",
     "tailwindcss": "^3"
   },
   "devDependencies": {

playgrounds/vite/package.json

@@ -11,8 +11,8 @@
   "dependencies": {
     "@tailwindcss/vite": "workspace:^",
     "@vitejs/plugin-react": "^4.3.4",
-    "react": "^18.3.1",
-    "react-dom": "^18.3.1",
+    "react": "^19.0.0",
+    "react-dom": "^19.0.0",
     "tailwindcss": "workspace:^"
   },
   "devDependencies": {