Subscription using Typescript - Property 'Subscription' is incompatible with index signature.

[Chabane]

Hello,

I got this error when I tried to execute this code. Do you have any idea?

src/index.ts(40,49): error TS2345: Argument of type '{ typeDefs: string; resolvers: { Query: { addCell: (: any, { type }: { type: any; }) => Prom...' is not assignable to parameter of type 'IExecutableSchemaDefinition'.
Types of property 'resolvers' are incompatible.
Type '{ Query: { addCell: (: any, { type }: { type: any; }) => Promise; }; Subscription: ...' is not assignable to type 'IResolvers'.
Property 'Subscription' is incompatible with index signature.
Type '{ newCell: { subscribe: (: any, { type }: { type: any; }) => AsyncIterator<{}>; }; }' is not assignable to type 'GraphQLScalarType | IResolverObject | (() => any)'.
Type '{ newCell: { subscribe: (: any, { type }: { type: any; }) => AsyncIterator<{}>; }; }' is not assignable to type '() => any'.
Type '{ newCell: { subscribe: (_: any, { type }: { type: any; }) => AsyncIterator<{}>; }; }' provides no match for the signature '(): any'.

import { PubSub } from 'graphql-subscriptions';
const pubsub = new PubSub();

export const typeDefs = `

type Subscription {
  newCell: Cell
}

type Query {
  addCell(type: CellType!): Cell
}

schema {
  query: Query
  subscription: Subscription
}
`

export const resolvers = {
  Query: {
    addCell: async (_, { type }) => {
      let cell = new Cell();
      cell.type = type;
      pubsub.publish('newCell', { newCell: cell });
      return cell;
    },
  },

  Subscription: {
    newCell: {
      subscribe: () =>
        pubsub.asyncIterator('newCell')
    }
  }
};

[Chabane]

I opened an issue on graphql-tools. I close this issue.
ardatan/graphql-tools#372