Handle types with identical properties in GraphQL

Question

I've joined a codebase that used GraphQL and is in dire need of DRYing up. Example code would look like this:

/plugins/abc/schemas/user.js

const { gql } = require('apollo-server-express')

module.export.defTypes = gql`
    type User {
        name: String
        id: String
        location: String
    }
`

/plugins/def/schemas/user.js

const { gql } = require('apollo-server-express')

module.export.defTypes = gql`
    type User {
        name: String
        id: String
        location: String
    }
`

I don't know GraphQL terribly well, but given that this was just exporting string content, I assumed I could do this:

/plugins/def/schemas/user.js

const { gql } = require('apollo-server-express');
const { user } = require('../shared/schemas');

module.export.defTypes = gql`
    type User {
        ${user}
    }

But graphQL throws up an error:

(node:78551) UnhandledPromiseRejectionWarning: MissingSchemaError: Schema hasn't been registered for model "<name of unrelated model>".

Is there a correct, GraphQL-y way to do this?