Hey @ajmajma, thanks a lot for opening this issue. I just checked and the error doesn't seem problematic. For some reason Nexus isn't able to write the schema.graphql file to the file system.

I changed the title of this issue to reflect that.

Hey @nikolasburk thanks for updating this. I don't know if this is related but the generate:nexus seems to also be breaking. When I try to run it, the console is giving me :

(node:32915) Warning: To load an ES module, set "type": "module" in the package.json or use the .mjs extension.
/Users/amoser/Desktop/prisma-examples-prisma2 3/typescript/graphql-nextjs/pages/api/index.ts:1
import { idArg, makeSchema, objectType, stringArg, asNexusMethod } from 'nexus';
^^^^^^

SyntaxError: Cannot use import statement outside a module

The problem is with "module" from tsconfig.json. If you switch from "module":"esnext" to "module": "commonjs" the issue is fixed. However, nextjs requires esnext for dynamic import() support.

This is just a workaround, it'll be great to find a solution that works for both nextjs and nexus.

P.S. I'm also running into 'Error: EACCES: permission denied, open '/schema.graphql'' issue with node 10

This is probably obvious,
but as a workaround, i executed yarn dev with sudo privileges.
@JorgeCeja when i change the module to commonjs, the compiler tries to edit the module back to esnext.

I changed __dirname to process.cwd() and it worked for me.

  types: [Query, Mutation, User],
  outputs: {
    typegen: process.cwd() + '/pages/api/nexus-typegen.ts',
    schema: process.cwd() + '/pages/api/schema.graphql',
  },
});

@Edjevw12 do you mind submitting a PR with this solution 🙂

FWIW, I've created a PR that fixes this and a few related issues.

Thanks a lot @akshaylive, the PR is merged 🚀