You can use this repo in order to quickly create a template for reproducing issues related to graphql-code-generator.
Use the following link: https://codesandbox.io/s/github/dotansimha/graphql-code-generator-issue-sandbox-template
document.graphql- your GraphQL operations - queries, mutations, subscritpions and fragments.schema.graphql- your GraphQL schema.codegen.yml- Codegen configuration
Create a fork from this template, and then in your sandbox terminal, use
yarn generateto generate the types.