getAccessToken not working on Cloudflare Workers

The function

```
const accessToken = await getAccessToken({
credentials: credentials,
scope: "https://www.googleapis.com/auth/cloud-platform",
waitUntil: c.executionCtx.waitUntil,
});
```

Isn't working for me, it works locally, but when I use it in the worker it says this: **TypeError: Illegal invocation**

Anyone faced the same problem?

Start at the getAccessToken entry point and inspect how the credentials, scope, and waitUntil callback are used in a Cloudflare Worker. Reproduce the shown call in the worker environment and compare it with the local behavior; done means the access token is obtained without the Illegal invocation error.

Written by the indexing model from the issue text.