Confusing lack of any output when putting docblock below decorators

[Jordan Eldredge]

@ObjectType({
  description: "A person who has composed opera.",
})
/** @gqlType */
export default class Composer  {
  @Field((type) => String)
  /** @gqlField */
  url(): string {
    return `/composer/${this._composer.id}`;
  }
}

Silently extracts zero things. Moving the docblocks above the decorators works, but we should error in this case if possible to show you where to find them.

[Jordan Eldredge]

Note that this is a special case of a broader problem. We don't have a way to discover detached comments. TypeScript does not expose these at all in the AST. We can look to typescript-eslint as a role model here. It (transitively) uses this:

https://github.com/JoshuaKGoldberg/ts-api-utils/blob/fcd3128b61dfb54978b30f07380ad1c87a5d093e/src/comments.ts#L76

[Jordan Eldredge]

Closed by #107