[bug] Circular references break .d.ts building

[PapiOphidian]

In 2 files, I have each other referencing each other directly through the import statement.

The files look a little something like this:

LocalBucket.ts

/**
 * Bucket used for saving ratelimits
 * @protected
 */
class LocalBucket {
	/**
	 * ratelimiter used for ratelimiting requests
	 */
	public ratelimiter: import("./Ratelimiter");
	/**
	 * Key used internally to routify requests
	 */
	public routeKey: string;

	/**
	 * Create a new bucket
	 * @param ratelimiter ratelimiter used for ratelimiting requests
	 * @param routeKey Key used internally to routify requests. Assigned by ratelimiter
	 */
	public constructor(ratelimiter: import("./Ratelimiter"), routeKey: string) {
		this.ratelimiter = ratelimiter;
		this.routeKey = routeKey;
	}
}

export = LocalBucket;

Ratelimiter.ts

import LocalBucket = require("./LocalBucket");

const routeRegex = /\/([a-z-]+)\/(?:\d+)/g;
const reactionsRegex = /\/reactions\/[^/]+/g;
const reactionsUserRegex = /\/reactions\/:id\/[^/]+/g;
const webhooksRegex = /^\/webhooks\/(\d+)\/[A-Za-z0-9-_]+/;
const isMessageEndpointRegex = /\/messages\/:id$/;

/**
 * Ratelimiter used for handling the ratelimits imposed by the rest api
 * @protected
 */
class Ratelimiter {
	/**
	 * An object of Buckets that store rate limit info
	 */
	public buckets: { [routeKey: string]: LocalBucket; } = {};
	
	/**
	 * Queue a rest call to be executed
	 * @param fn function to call once the ratelimit is ready
	 * @param url Endpoint of the request
	 * @param method Http method used by the request
	 */
	public queue(fn: (bucket: import("./LocalBucket")) => any, url: string, method: string) {
		const routeKey = this.routify(url, method);
		if (!this.buckets[routeKey]) this.buckets[routeKey] = new LocalBucket(this, routeKey);
		this.buckets[routeKey].queue(fn);
	}
}

Whenever tsup gets to building the .d.ts, it tries to generate this:

var __Ratelimiter = /*#__PURE__*/Object.freeze({
   __proto__: null,
  get default () { return Ratelimiter; }
});

Although this causes an "Expected a property assignment" error which comes from the rollup dist file.
Here's the full stack:

Error: Expected a property assignment

   6 | var __Ratelimiter = /*#__PURE__*/Object.freeze({
   7 |  __proto__: null,
>  8 |  get default () { return Ratelimiter; }
     |  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   9 | });
  10 |
  11 | declare const Constants: {
    at NamespaceFixer.findNamespaces (A:\Windows\Documents\GitHub\SnowTransfer\node_modules\tsup\dist\rollup.js:6121:21)
    at NamespaceFixer.fix (A:\Windows\Documents\GitHub\SnowTransfer\node_modules\tsup\dist\rollup.js:6142:48)
    at Object.renderChunk (A:\Windows\Documents\GitHub\SnowTransfer\node_modules\tsup\dist\rollup.js:7199:25)
    at A:\Windows\Documents\GitHub\SnowTransfer\node_modules\rollup\dist\shared\rollup.js:23807:40
Error: error occured in dts build
    at Worker.<anonymous> (A:\Windows\Documents\GitHub\SnowTransfer\node_modules\tsup\dist\index.js:2226:26)
    at Worker.emit (node:events:513:28)
    at MessagePort.<anonymous> (node:internal/worker:233:53)
    at [nodejs.internal.kHybridDispatch] (node:internal/event_target:645:20)
    at exports.emitMessage (node:internal/per_context/messageport:23:28)
DTS Build error

After making a type in LocalBucket which represented the RateLimiter partially as I needed it, the error went away. Although, I'm a little confused as generating a getter has no benefit and the plain names can be referenced anywhere in the file regardless of where they appear.

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