next v15

[boredland]

should this work with next v15? i tried it and not only is next-superjson-plugin complaining about the missing peer dependency, this also seems not to work...

      at Object.transformSync (node_modules/next/src/build/swc/index.ts:1205:25)
      at transformSync (node_modules/next/src/build/swc/index.ts:1290:19)
      at Object.process (node_modules/next/src/build/swc/jest-transformer.ts:105:25

[nbibler]

I'm seeing similar. Because of the next-superjson-plugin dependency, this next-superjson package is not directly compatible with Next 15. next-superjson-plugin strictly depends on next 13 or 14, only.

% npm install next-superjson next-superjson-plugin superjson
npm error code ERESOLVE
npm error ERESOLVE unable to resolve dependency tree
npm error
npm error While resolving: app@0.0.0
npm error Found: next@15.2.4
npm error node_modules/next
npm error   next@"15.2.4" from the root project
npm error
npm error Could not resolve dependency:
npm error peer next@"^13.0 || ^14.0" from next-superjson-plugin@0.6.3
npm error node_modules/next-superjson-plugin
npm error   next-superjson-plugin@"*" 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.

Certainly, you can --force, but that defeats the purpose of dependency management and version restrictions.

[jorroll]

You can use the package.json overrides feature to install next-superjson-plugin and ignore the dependency issue without using the --force. This will allow you to run npm install normally. I haven't tested my app in Next 15 extensively yet, but using this plugin my app starts up and appears to run normally.

For example

{
  "overridesDescription": {
    "next-superjson-plugin": "This plugin doesn't support Next 15 yet, but we wrap it's usage with `next-superjson` which allows us to use it in Next 15."
  },
  "overrides": {
    "next-superjson-plugin": {
      "next": "15"
    }
  }
}