When I try to run my Next.js app with npm run dev I get an error message saying that I don’t have the required packages to run Next with Typescript:
Please install @types/react by running:
npm install --save-dev @types/react
If you are not trying to use TypeScript, please remove the tsconfig.json file from your package root (and any TypeScript files in your pages directory).
However, the module ‘@types/react’ is installed. I tried running npm install --save-dev @types/react and got no error messages (just a bunch of warnings but I don’t think they are the problem).
How can I solve this and run the project?
>Solution :
Seems like there is a bug in the current @types/react version (specifically v18.0.2), you can downgrade to 18.0.1 with npm install --save-dev @types/react@18.0.1
Source: https://github.com/vercel/next.js/issues/36085