Cannot find namespace

[adamalfredsson]

Hey! I'm sure I must be doing some rookie mistake, but I'm struggling to get this work.

package.json

{
  "dependencies": {
    "@gql2ts/from-schema": "^1.10.1",
    "apollo-server-express": "^2.1.0",
    "graphql": "^0.13.2",
  },
  "devDependencies": {
    "@gql2ts/types": "^1.9.0",
    "@types/graphql": "^14.0.0",
    "@types/node": "^10.10.3",
    "gql2ts": "^1.10.1",
    "ts-node": "^7.0.1",
    "typescript": "^3.0.3"
  }
}

I'm successfully able to generate the types from my GQL schemas

./scripts/generateTypes.ts

const typescriptTypes = generateNamespace("GQL", mySchema);

fs.writeFile(
  path.join(__dirname, "./types/schema.d.ts"),
  typescriptTypes,
  err => {
    console.log(err);
  }
);

Output:

./types/schema.d.ts

// tslint:disable
// graphql typescript definitions

declare namespace GQL {
  interface IGraphQLResponseRoot {
    data?: IQuery | IMutation;
    errors?: Array<IGraphQLResponseError>;
  }

  interface IGraphQLResponseError {
    /** Required for all errors */
    message: string;
    locations?: Array<IGraphQLResponseErrorLocation>;

    /** 7.2.2 says 'GraphQL servers may provide additional entries to error' */
    [propName: string]: any;
  }

  interface IGraphQLResponseErrorLocation {
    line: number;
    column: number;
  }

  interface IQuery {
    __typename: "Query";
    me: IAccount;
  }

  interface IMutation {
    __typename: "Mutation";
    login: IAccount;
    logout: boolean;
  }

  interface ILoginOnMutationArguments {
    email: string;
    password: string;
  }
}

// tslint:enable

... but when I try to use them in my resolver:

resolver.ts

export const resolvers: ResolverMap = {
  Mutation: {
    login: async (parent, { email, password }: ILoginOnMutationArguments, { req }) => {
      // ...
    },
  },
};

... I get the following error:

    return new TSError(diagnosticText, diagnosticCodes)
           ^
TSError: ⨯ Unable to compile TypeScript:
src/modules/resolver.ts(32,48): error TS2503: Cannot find namespace 'GQL'.

    at createTSError (./node_modules/ts-node/src/index.ts:261:12)
    at getOutput (./node_modules/ts-node/src/index.ts:367:40)
    at Object.compile (./node_modules/ts-node/src/index.ts:558:11)
    at Module.m._compile (./node_modules/ts-node/src/index.ts:439:43)
    at Module._extensions..js (internal/modules/cjs/loader.js:700:10)
    at Object.require.extensions.(anonymous function) [as .ts] (./node_modules/ts-node/src/index.ts:442:12)
    at Module.load (internal/modules/cjs/loader.js:599:32)
    at tryModuleLoad (internal/modules/cjs/loader.js:538:12)
    at Function.Module._load (internal/modules/cjs/loader.js:530:3)
    at Module.require (internal/modules/cjs/loader.js:637:17)

Worth noting perhaps is that my IDE successfully recognizes the namespace, it fails on runtime only.

[brettjurgens]

@nomadoda I think you might need to add it to your tsconfig via the typeRoots option

[adamalfredsson]

@brettjurgens Hm, doesn't seem to solve my issue unfortunately. I added my types folder to the tsconfig typeRoots which seemed to override some node_modules types. So I included that as well, but I still get the same error.

tsconfig.json

{
  "compilerOptions": {
    "target": "es6",
    "module": "commonjs",
    "lib": ["dom", "es6", "es2017", "esnext.asynciterable"],
    "sourceMap": true,
    "typeRoots": [
      "./src/types",
      "./node_modules/@types"
    ],
    "outDir": "./dist",
    "moduleResolution": "node",

    "removeComments": true,
    "noImplicitAny": true,
    "strictNullChecks": true,
    "strictFunctionTypes": true,
    "noImplicitThis": true,
    "noUnusedLocals": true,
    "noUnusedParameters": false,
    "noImplicitReturns": true,
    "noFallthroughCasesInSwitch": true,
    "allowSyntheticDefaultImports": false,
    "emitDecoratorMetadata": true,
    "experimentalDecorators": true
  },
  "exclude": ["node_modules"],
  "include": ["./src/**/*.ts"]
}

[yaoyonstudio]

got the same issue

[JulianIsrael]

same issue here

[citypaul]

I'm having the same issue at the moment. I've found I've had to manually change the exported file to go from:

define namespace GQL{...

to

export namespace GQL{...

I can then pull this in where required and it does work. It'd be great if I didn't have to do this manually though...

[shaheermir]

Having the same issue here.
Adding it to typeRoots doesn't solve it either. =/

[enspdf]

Currently I'm have the same Issue. But It works fine if i use the 6.0.0 ts-node version, if i upgrade it to the latest version fails.

[enspdf]

I'm having the same issue at the moment. I've found I've had to manually change the exported file to go from:

define namespace GQL{...

to

export namespace GQL{...

I can then pull this in where required and it does work. It'd be great if I didn't have to do this manually though...

I try but doesn't work... The same issue happens.

[sonacy]

seems that is a ts-node problem. By default, ts-node does not use files, include or exclude. If you must use files, enable --files flags or set TS_NODE_FILES=true. so just add --files like: ts-node --files index.ts. works fine to me.

[enspdf]

seems that is a ts-node problem. By default, ts-node does not use files, include or exclude. If you must use files, enable --files flags or set TS_NODE_FILES=true. so just add --files like: ts-node --files index.ts. works fine to me.

Can you show us an example plz ?

[ankeeth-coditas]

seems that is a ts-node problem. By default, ts-node does not use files, include or exclude. If you must use files, enable --files flags or set TS_NODE_FILES=true. so just add --files like: ts-node --files index.ts. works fine to me.

Thanks a ton, man!! This worked for me!

[juliusdelta]

@enspdf

// Normal
$ ts-node --files src/index.ts

// Nodemon
$ nodemon --exec ts-node --files src/index.ts

@sonacy Thanks for the fix, worked for me.

[enBonnet]

@enspdf

// Normal
$ ts-node --files src/index.ts

// Nodemon
$ nodemon --exec ts-node --files src/index.ts

@sonacy Thanks for the fix, worked for me.

Thanks @juliusdelta this works to me

[darkphantomke]

I installed the older version from current version

// Current
"ts-node": "8.6.2"

// Older
"ts-node": "6.0.0"