Apollo-server: Error: Unknown type "Query".

[reeversedev]

I've been getting this error for a while now when I am trying to compile my code.

Error: Unknown type "Query".

index.js

import { ApolloServer } from 'apollo-server';
import path from 'path';
import { fileLoader, mergeTypes, mergeResolvers } from 'merge-graphql-schemas';

import models from './models/index';

const typeDefs = mergeTypes(fileLoader(path.join(__dirname, './schema')));
const resolvers = mergeResolvers(
  fileLoader(path.join(__dirname, './resolvers'))
);

const server = new ApolloServer({ typeDefs, resolvers, context: models });

models.sequelize.sync({ force: true }).then(x => {
  server.listen().then(({ url }) => {
    console.log(`🚀  Server ready at ${url}`);
  });
});

schema/user.js

export default {
  Query: {
    getUser: (parent, { id }, { models }) => {
      models.User.findOne({ where: { id } });
    },
    allUsers: (parent, args, { models }) => {
      models.User.findAll();
    }
  },
  Mutation: {
    createUser: (parent, args, { models }) => {
      models.User.create(args);
    }
  }
};

Can somebody please help me because the error message doesn't tell me much.

[Istjustaname]

I am new to graphql aswell and I had the same problem. I am using merge-graphql-schemas aswell. My problem was that I was using Typescript and my .graphql files weren't copied over to the output directory (by default directory named dist, check out your tsconfig.json) by tsc command. Now I am using cpx (a node package) to copy over all my .graphql files to my tsc output directory.

[Hmoulvad]

@Istjustaname can you provide a Github repo to share. So we can see how you did it? I have the same problem as @reeversedev

[bamtron5]

I'm using cpx already to move around items that TS does not handle over to my output directory. Including *.graphql. I get the same results so far. I'm just starting a project fresh and I don't have the Query object specified anywhere in my source code. @Istjustaname

[bamtron5]

I'm digging through graphql/validations/validation.js where the error is output.

i just logged out:

  console.log('dast',documentAST.definitions[0].operationTypes);
  var errors = validateSDL(documentAST);
  console.log(errors[0].locations);

[ { kind: 'OperationTypeDefinition',
    operation: 'query',
    type: { kind: 'NamedType', name: [Object], loc: [Object] },
    loc: { start: 11, end: 23 } },
  { kind: 'OperationTypeDefinition',
    operation: 'mutation',
    type: { kind: 'NamedType', name: [Object], loc: [Object] },
    loc: { start: 26, end: 44 } } ]

notice it is passing around this object with operation query. I don't know how to control or understand this behavior but I hope this helps.

[bamtron5]

see here
https://github.com/okgrow/merge-graphql-schemas/issues/155

@RichardLitt it needs for https://github.com/prisma/prisma-binding
For base schema not define Query and other. Then prisma generate complete schema. When merged schema contains Query/Mutation/Subscription prisma create tables in database for them.

It is expected behavior. Is this item closed now?
@reeversedev

[reeversedev]

For me this is still open because honestly, I've not been able to reproduce more.

[apisandipas]

Also experiecing this issue.

Error: Unknown type "Query".
at assertValidSDL (/home/user/Code/App/server/node_modules/graphql/validation/validate.js:80:11)

[nareshbhatia]

I am experiencing the same issue. Here's my repo:

https://github.com/nareshbhatia/graphql-bookstore/tree/master/apollo-bookstore-server

For build instructions, please see README.md:

• Dev build uses ts-node and has no issues.
• Prod build uses tsc and throws the Unknown type "Query" error.

[nareshbhatia]

Fixed. It was an easy one! I was not copying the typedef files to the dist folder. This was required for merge-graphql-schemas to stitch the schema together. You can now see the complete working solution here.

[abernix]

Thanks for reporting this issue originally!

I'm going to close this issue since it hasn't received a lot of traction and could have been resolved already, plus the follow-up that @nareshbhatia provided seems to be working properly.

If this is still a problem, would someone who's experiencing the problem (or anyone who comes across this issue and is able to assist) mind building a reproduction of the problem in to a runnable CodeSandbox reproduction using the latest version of Apollo Server and sharing the link to that CodeSandbox in this issue?

I'm happy to re-open if this is still occurring and someone can provide a runnable reproduction of the original issue. Thanks again!

[alexahdp]

Hi, I have the same problem. This is the repo: https://github.com/alexahdp/harity_questions/tree/graphql-problem
just do

npm ci
npm run start:dev

to reproduce it.

[eladnm]

Fixed. It was an easy one! I was not copying the typedef files to the dist folder. This was required for merge-graphql-schemas to stitch the schema together. You can now see the complete working solution here.

i can't get this to work. tried to run yarn and yarn build but with no success. still getting Error: Unknown type "Query".

[nareshbhatia]

@eladnm, are you running my project? Can you confirm that yarn build is running "copy-to-dist": "copyfiles --up 1 src/graphql/typedefs/* dist" and the typedef files are actually being copied to the dist folder?

[eladnm]

@eladnm, are you running my project? Can you confirm that yarn build is running "copy-to-dist": "copyfiles --up 1 src/graphql/typedefs/* dist" and the typedef files are actually being copied to the dist folder?

Hi, I am actually running a different project but this is the only place I could find a reference for this type of error.. can you please explain about this error so I can try to resolve it by myself? Thanks!!

[nareshbhatia]

@eladnm, in my use case I am creating "mini" GraphQL schemas and merging them to one final schema using a library called merge-graphql-schemas. This works in development mode because merge-graphql-schemas can find the "mini" schemas in the src folder. However when I build for production mode (i.e. compile TypeScript into JavaScript), then merge-graphql-schemas cannot find the scemas in the dist folder. Hence the error. To prevent this error, I have to copy the mini schemas to the dist folder. Hope that explains.

[ritz-786]

@reeversedev , I know it's late but i think your error seems to be your folder location ,in path.join(__dirname,relative_folder_location)
eg: if schema is in slack-clone-server/src/schema
then it should be as path.join(__dirname,./src/schema)