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Bump next from 13.2.0 to 15.5.15 in /apps/nextjs-13_2_0 #78

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Bump next from 13.2.0 to 15.5.15 in /apps/nextjs-13_2_0 #78

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2 changes: 1 addition & 1 deletion apps/nextjs-13_2_0/package.json
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Expand Up @@ -13,7 +13,7 @@
"@types/node": "20.12.7",
"@types/react": "18.2.79",
"@types/react-dom": "18.2.25",
"next": "13.2.0",
"next": "15.5.15",
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@cursor cursor bot Apr 12, 2026

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React 18 incompatible with Next.js 15 App Router

High Severity

Next.js 15 requires React 19 for the App Router, but react and react-dom remain at 18.2.0. This project uses the App Router (has an app/ directory with layout.tsx, page.tsx, route handlers, etc.), so it will fail to build or produce runtime errors with this combination.

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Fix in Cursor Fix in Web

Reviewed by Cursor Bugbot for commit 53441bf. Configure here.

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@cursor cursor bot Apr 12, 2026

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Removed experimental.appDir config breaks Next.js 15 build

Medium Severity

The next.config.js still sets experimental: { appDir: true, instrumentationHook: true }, but both options were removed in Next.js 15. appDir became stable and its experimental flag was dropped entirely — Next.js 15 will error or warn on this unrecognized config. The instrumentationHook is also now stable and no longer needs the experimental flag.

Fix in Cursor Fix in Web

Reviewed by Cursor Bugbot for commit 53441bf. Configure here.

"react": "18.2.0",
"react-dom": "18.2.0",
"typescript": "5.4.5"
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