GraphQLScalarType error on 15.1.0

[gtolarc]

It seems that an error about custom scalar type occurs in version 15.1.0. There was no problem at 15.0.0. (with https://github.com/taion/graphql-type-json)

src/schema/index.ts:25:9 - error TS2322: Type 'GraphQLScalarType' is not assignable to type 'GraphQLNamedType'.
  Type 'GraphQLScalarType' is not assignable to type 'GraphQLEnumType'.

25         GraphQLJSON,
           ~~~~~~~~~~~
src/schema/index.ts:26:9 - error TS2322: Type 'GraphQLScalarType' is not assignable to type 'GraphQLNamedType'.
  Type 'GraphQLScalarType' is not assignable to type 'GraphQLEnumType'.

26         GraphQLJSONObject,

[IvanGoncharov]

@gtolarc Can you please provide a minimal code sample?

[gtolarc]

import { GraphQLNonNull, GraphQLObjectType } from 'graphql';
import { GraphQLJSON } from 'graphql-type-json';

const sample = new GraphQLObjectType({
  name: 'Sample',
  fields: () => ({
    json: { type: new GraphQLNonNull(GraphQLJSON) },
  }),
});

[danielrearden]

@gtolarc @types/graphql-type-json is still using version 14.6.0 of graphql-js. You can fix this by either:

1. Using yarn and taking advantage of its dependency resolution feature. You'd need to add a resolutions property of your package.json and do a clean reinstall of node_modules using yarn install

"resolutions": {
  "graphql": "^15.1.0"
},

2. Uninstalling @types/graphql-type-json Writing your own type declaration file for graphql-type-json

3. Uninstalling both graphql-type-json and @types/graphql-type-json and just including the two scalars directly in your codebase (it's like 80 lines)

4. Submitting a PR to definitely typed with an update to @types/graphql-type-json

[gtolarc]

I solved it with the yarn resolutions method you gave me. Thanks for your advice. @danielrearden

[gtolarc]

graphql-type-json v0.3.2 has just been released, and the related type error has been fixed.