How to get the internal value of enum instead of key?

I’m trying to reproduce this example, after 3 hours testing, I have no idea how to get the values of enum using nestjs/graphql (type-graphql works fine).

## I'm submitting a...
[ ] Regression 
[ ] Bug report
[ ] Feature request
[*] Documentation issue or request
[ ] Support request => Please do not submit support request here, instead post your question on Stack Overflow.

Current behavior

Let’s say we have an enum:

import { registerEnumType } from "type-graphql";

export enum Difficulty {
  Beginner = 1,
  Easy = 2,
  Medium = 3,
  Hard = 4,
  MasterChef = 5,
}

registerEnumType(Difficulty, {
  name: "Difficulty",
});

And the resolver:

import {
  Resolver,
  Args,
} from '@nestjs/graphql';
import {
  Recipe,
} from './recipe.entity';
import { Difficulty } from './recipe.constant';

@Resolver(Recipe)
export class RecipeResolver {
  @Query(returns => [Recipe])
  recipes(@Args({ name: 'difficulty', type: () => Difficulty }) difficulty: Difficulty) {
    console.log(difficulty); // I'm getting the string key name
  }
}

Query:

query {
  recipes (difficulty: Beginner) {
    name
  }
}

The console output is "Beginner".

Expected behavior

Should be 1.

Minimal reproduction of the problem with instructions

If it’s necessary, I’ll creating one.

What is the motivation / use case for changing the behavior?

Common usage.

Environment

Nest version: 6.1.1
 
For Tooling issues:
- Node version: 10.15.3
- Platform:  Windows

Others:
- TypeScript: 3.4.3

[kamilmysliwiec]

Published as 6.2.0 ($ npm i @nestjs/graphql@latest). You will also have to update @nestjs/core to 6.2.0 ($ npm i @nestjs/core@latest)

[marvinroger]

I can confirm it’s fixed in next, thanks @kamilmysliwiec!