Unable to signin with oauth tokens when using this library.

[rlam3]

Package Version: @tastytrade/api@6.0.0

Node Version: v22.12.0

Module System: ES Modules ("type": "module")

Problem

When importing TastytradeClient from @tastytrade/api v6.0.0, the application crashes with the following error:

SyntaxError: The requested module '@dxfeed/dxlink-api' does not provide an export named 'DXLinkFeed'
    at ModuleJob._instantiate (node:internal/modules/esm/module_job:180:21)

Root Cause

The issue is in lib/quote-streamer.ts line 1:

// CURRENT (BROKEN):
import { DXLinkWebSocketClient, DXLinkFeed, FeedContract, FeedDataFormat, type DXLinkFeedEventListener } from '@dxfeed/dxlink-api'

In @dxfeed/dxlink-api version 0.5.x, the DXLinkFeed export was moved from @dxfeed/dxlink-api to a separate package @dxfeed/dxlink-feed.

However, quote-streamer.ts still tries to import it from the old location, causing the error.

Impact

This error occurs even when not using the QuoteStreamer because:

1. TastytradeClient constructor instantiates QuoteStreamer (line 88 of tastytrade-api.ts)
2. This loads quote-streamer.ts
3. Node.js evaluates all imports immediately
4. The broken import fails before any code runs

This makes the entire @tastytrade/api@6.0.0 package unusable with current DXLink dependencies.

Reproduction Steps

npm install @tastytrade/api@6.0.0 

import TastytradeClient from "@tastytrade/api";

const client = new TastytradeClient({
  ...TastytradeClient.ProdConfig,
  clientSecret: 'your-client-secret',
  refreshToken: 'your-refresh-token',
  oauthScopes: ['read']
});

// 💥 Crashes before this line even executes

Proposed Fix

Split the import statement in lib/quote-streamer.ts:

// FIX:
import { DXLinkWebSocketClient, FeedContract, FeedDataFormat, type DXLinkFeedEventListener } from '@dxfeed/dxlink-api'
import { DXLinkFeed } from '@dxfeed/dxlink-feed'

[dmoss18]

@rlam3 I'm having trouble reproducing your issue. It looks like dxlink-api still exports everything from dxlink-feed here, so I'm not sure why things are breaking for you.

I put up a branch here with a test script that uses your code, and connects to the quote streamer. I wasn't able to reproduce the break. Can you take a look to make sure I followed your steps to reproduce correctly?

[dmoss18]

@rlam3 try upgrading to 7.0.1. We made a few Oauth-related changes that may help with your issue.