fragments.generated.ts is different between versions

[wenoweno]

Hello, I'm using graphql-codegen with react-query in my project.
I found that my fragment.generated.ts file is different depending on graphql-codegen version.
e.g)

// fragments.graphql

fragment test on Test {
    foo
    bar
}

// fragment.generated.ts(graphql-codegen/typescript ^2,.4.2)
import * as Types from '../types/graphqlCodegen'

export type GQLTestFragment = { __typename?: 'Test' } & Pick<Types.GQLTest, 'foo' | 'bar'>

export const TestFragmentDoc = `
    fragment test on Test {
  foo
  bar
}
    `


// fragment.generated.ts(graphql-codegen/typescript ^1.21.7)
import * as Types from '../types/graphqlCodegen'

export type GQLTestFragment = {
  __typename?: 'Test'
  foo?: string | null | undefined
  bar?: number | null | undefined
}


export const TestFragmentDoc = `
    fragment test on Test {
  foo
  bar
}
    `

I got different generated .ts file with same fragment.graphql file. And the latter cause an error with using hook --eslint-fix because the file imports Types and doesn't use. Is this an intentional change?