Hasura action codegen may generate invalid typescript if reserved symbols are used as scalars

[beepsoft]

In my data model I use Postgresql "bigint" ID-s and and tried to use the same types in an action like this:

type Mutation {
  doSomething (
    arg: SampleInput!
  ): SampleOutput
}

scalar bigint

input SampleInput {
  id : bigint!
}

type SampleOutput {
  id : bigint!
}

For this I tried generating code using the typescript-express codegen:

type Maybe<T> = T | null

type bigint = string

type Mutation = {
  doSomething?: Maybe<SampleOutput>
}

type doSomethingArgs = {
  arg: SampleInput
}

type SampleOutput = {
  id: bigint
}

type SampleInput = {
  id: bigint
}

The

type bigint = string

line results in a Type alias name cannot be 'bigint'.(2457) typescript error. It turns out bigint is a reserved javascript symbol.

Here's just the offending line in a ts playground

https://www.typescriptlang.org/play?ts=4.1.3#code/KYDwDg9gTgLgBDAnmYcBGBLA5hgdvAXjgGcYo8sAoIA

https://graphql-code-generator.com/ solves this by defining and using scalar types like this:

export type Scalars = {
  bigint: any;
};

export type SampleInput = {
  id: Scalars['bigint'];
};

Would it be possible to make something similar in tha Hasura action codegen so that the output won't have clashes with reserved names?