Compatibility with WHATWG at URL and URLSearchParams

[watilde]

Hello 👋

As I mentioned at #1549, we need to add more things to have compatibility with URL specification in WHATWG and make sure if it's correct by running all WPT tests.

I'm wondering if it's ok to just use jsdom/whatwg-url instead of having full implementation and running all tests in WPT.

[kitsonk]

As mentioned in the original PR for URL it wasn't intended to follow the spec exactly: #1359 . The jsdom/whatwg-url has a lot of logic, following the specification exactly, that really is a bit overkill. My opinion is we should just fix issues when we find them.

[watilde]

I'm not quite sure which part can be exactly overkilled in WHATWG URL yet, but I'm sure they really cover almost all edge cases. For me, one more big plus here is that we can update the spec itself if there is any useless process which also updates whatwg-url :)

For this part,

we should just fix issues when we find them.

One of the effecient ways to find them is running WPT tests and I could find a lot already. That was the original reason why I started writing a patch.

[piscisaureus]

Fixed in #853