Circular type exported from namespace cannot be named

[Retsam]

Steps to reproduce

// some-library.d.ts
type T = { value: string | T };

declare namespace ns {
  export type NsValue = T;
  export function fn(val: ns.NsValue): void;
}

export { ns };

import { ns } from "test-library";

export const fn = (val: ns.NsValue) => ns.fn(val);

Here's a repro repo: https://github.com/Retsam/ts-go-namespace-declaration-emit-issue

Behavior with typescript@5.9

No error, emits:

import { ns } from "test-library";
export declare const fn: (val: ns.NsValue) => void;

Behavior with tsgo

Exported variable 'fn' has or is using name 'T' from external module "/Users/hunter2/ts-go-issue/types/test-library/index" but cannot be named.

4 export const fn = (val: ns.NsValue) => ns.fn(val);

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There's a a few other declaration tickets open, but none of them looked like close matches to this behavior.