#Upgrading from next 14 to 15

1 messages · Page 1 of 1 (latest)

paper glacier
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Which should I pick? I'm upgrading my next to v15 by running this command npx @next/codemod@canary upgrade latest

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sinful tangleBOT
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cursive summit
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canary versions have experimental or new features, if you don't want to test any specific one, you can try this to go to next 15 stable version

npx @next/codemod@latest upgrade latest

paper glacier
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  Detected installed versions:
  - React: v18.3.1
  - Next.js: v14.2.3
√ Enable Turbopack for next dev? ... yes
? The following codemods are recommended for your upgrade. Select the ones to apply. »
Instructions:
    ↑/↓: Highlight option
    ←/→/[space]: Toggle selection
    a: Toggle all
    enter/return: Complete answer
(*)   (v15.0.0-canary.179) app-dir-runtime-config-experimental-edge
                 Transform App Router Route Segment Config `runtime` value from `experimental-edge`  
                to `edge`
(*)   (v15.0.0-canary.171) next-async-request-api
(*)   (v15.0.0-canary.153) next-request-geo-ip```
cursive summit
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you can choose the last one and if you don't like it you can always manually change the package.json to next 15 and react 19 after

paper glacier
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Got new errors

npm error code ERESOLVE
npm error ERESOLVE unable to resolve dependency tree
npm error
npm error While resolving: event-ms@0.1.0
npm error Found: date-fns@4.1.0
npm error node_modules/date-fns
npm error   date-fns@"^4.1.0" from the root project
npm error
npm error Could not resolve dependency:
npm error peer date-fns@"^2.28.0 || ^3.0.0" from react-day-picker@8.10.1
npm error node_modules/react-day-picker
npm error   react-day-picker@"8.10.1" from the root project
npm error
npm error Fix the upstream dependency conflict, or retry
npm error this command with --force or --legacy-peer-deps
npm error to accept an incorrect (and potentially broken) dependency resolution.```
cursive summit
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delete node_modules, delete package-LOCK.json and npm install --legacy-peer-deps

paper glacier
cursive summit
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try reloading vscode, sometimes it bugs and show missing modules when you uninstall and re install, its just a visual red error but everything runs fine