graphql-compose: TypeError: Cannot read property 'getTypeName' of undefined

Question

I am trying out graphql-compose library and following their Getting started Github page, I build a very simple example.

Here is my code:

    import { schemaComposer } from "graphql-compose";

    export const UserTC = schemaComposer.createObjectTC({
      name: "UserTC",
      fields: {
        name: "String",
        surname: "String"
      }
    });

    UserTC.addResolver({
      kind: "query",
      name: "userFind",
      resolve: async () => {
       return []; // empty array
      }
    });

    schemaComposer.Query.addFields({
      userFind: UserTC.getResolver("userFind")
    });

    export const schema = schemaComposer.buildSchema()

I am getting the below error when I pass the returned schema object into
my Apollo server:

TypeError: Cannot read property 'getTypeName' of undefined

The error stack point to the last line of my code. I cannot figure out what I am doing wrong.

Thanks for your help.

I can possible not see what error I am doind

I wouldn't wrap your declarations with quotes. name: "String" probably should real name: String — Sweet Chilly Philly, Jun 18 '19 at 22:01
That is because it is a json object I am passing to the `createObjectTC` — TheSoul, Jun 18 '19 at 22:40
I removed the quotes but I'm still getting the same error. I even started a new clean project with the bare minimum...same error... — TheSoul, Jun 18 '19 at 23:17

maqon · Accepted Answer · 2019-06-19T09:01:48.407

1

add "type" to resolver:

UserTC.addResolver({
  kind: "query",
  name: "userFind",
  type: UserTC,
  resolve: async () => {
   return []; // empty array
  }
});

edited Jun 19 '19 at 09:01

answered Jun 19 '19 at 08:55

maqon

166
1
6

Thanks, that was my mistake. I actually fixed it yesterday already – TheSoul Jun 19 '19 at 09:47

graphql-compose: TypeError: Cannot read property 'getTypeName' of undefined

1 Answers1