graphql-request/src/layers/1_Schema/Field.ts

import type { Args } from './Args.js'
import type { MaybeThunk } from './core/helpers.js'
import type { Hybrid } from './Hybrid/__.js'
import type { Output } from './Output/__.js'

export type Field<$Type extends Output.Any, $Args extends Args<any> | null> = {
  type: $Type
  args: $Args
}

export const field = <$Type extends Output.Any, $Args extends null | Args<any> = null>(
  type: MaybeThunk<$Type>,
  args: $Args = null as $Args,
): Field<$Type, $Args> => {
  return {
    // At type level "type" is not a thunk
    type: type as any, // eslint-disable-line
    args,
  }
}

// todo test  non null interface fields
export type SomeField = Field<
  | Hybrid.Enum
  | Hybrid.Scalar.Any
  | Output.List<any>
  | Output.Nullable<any>
  | Output.Object$2<string, any>
  | Output.Union<string, [any, ...any[]]>
  | Output.Interface<string, Record<string, Field<any, Args<any> | null>>, [any, ...any[]]>,
  Args<any> | null
>

export type SomeFields<$Keys extends string | number | symbol = string | number | symbol> = Record<
  $Keys,
  SomeField
>