我刚刚开始了一个新的项目，它使用NextJS和graphql-codegen来从我的API生成apollo-react类型。然而，马上它创建了重复的导出变量，我不能构建我的项目，由于typescript错误。关于如何防止codegen创建这些副本有什么想法？

codegen.ts

import type { CodegenConfig } from "@graphql-codegen/cli";

const config: CodegenConfig = {
  overwrite: true,
  documents: ["src/**/*.tsx"],
  schema: process.env.NEXT_PUBLIC_GRAPHQL_ENDPOINT,
  generates: {
    "./src/graphql/__generated__/": {
      preset: "client",
      plugins: ["typescript-react-apollo"],
    },
  },
};
export default config;

codegen error

// ./src/graphql/__generated__/
...
// creates two 'UserDocument' variables
export const UserDocument = {"kind":"Document","definitions":[{"kind":"OperationDefinition","operation":"query","name":{"kind":"Name","value":"User"},"variableDefinitions":[{"kind":"VariableDefinition","variable":{"kind":"Variable","name":{"kind":"Name","value":"userId"}},"type":{"kind":"NamedType","name":{"kind":"Name","value":"ObjectId"}}}],"selectionSet":{"kind":"SelectionSet","selections":[{"kind":"Field","name":{"kind":"Name","value":"user"},"arguments":[{"kind":"Argument","name":{"kind":"Name","value":"id"},"value":{"kind":"Variable","name":{"kind":"Name","value":"userId"}}}],"selectionSet":{"kind":"SelectionSet","selections":[{"kind":"Field","name":{"kind":"Name","value":"id"}},{"kind":"Field","name":{"kind":"Name","value":"name"}},{"kind":"Field","name":{"kind":"Name","value":"email"}},{"kind":"Field","name":{"kind":"Name","value":"image"}},{"kind":"Field","name":{"kind":"Name","value":"hashedPassword"}},{"kind":"Field","name":{"kind":"Name","value":"role"}}]}}]}}]} as unknown as DocumentNode<UserQuery, UserQueryVariables>;

export const UserDocument = gql`
    query User($userId: ObjectId) {
  user(id: $userId) {
    id
    name
    email
    image
    hashedPassword
    role
  }
}
    `;
...