[url] Confused about the constructor argument types (#80)

So, the spec's constructor interface says:

```
Constructor(USVString url, optional USVString base)
```

However, right below that it says that both the `url` and `base` param will be run through the [basic-url-parser](https://url.spec.whatwg.org/#concept-basic-url-parser), which claims it can accept both `string input` and `URL url`.

Does this mean that the `URL()` constructor is also supposed to accept `URL` objects for its first and second arguments, in addition to `USVString`?

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Reply to this email directly or view it on GitHub:
https://github.com/whatwg/url/issues/80