Is your feature request related to a problem? Please describe.
I'm building a website where local anchors are an important part of the content navigation. I need to automatically check whether they're broken or not.

Describe the solution you'd like
I'd like the checker to validate whether my <a href="#foo"> or <a href="http://example.com/#foo"> links lead to a page where an actual

We are using YARL with mqtt: and mqtts: URLs, for which default ports are not substituted. This means we have to do the substitution manually in our code. This is fragile and easy to forget.

One possibility is to just add substitutions for these schemes (and possibly other common schemes) to YARL directly. This would be straightforward, but I can imagine it could also be a maintenance heada

For the project we're running (openrem.org) we run the code throurgh Codacy to check the code quality. Issues were raised with the generated reverse.js file.
Especially missing semi-colons, using underscores instead of camelCase and some other issues.

the following urls should be valid, but are not:

http://localhost
http://chewbacca
http://chewbacca;80
http://chewbacca:80/test

I used the embedded anchorme on the anchorme.js documentation site to test this.

If one changes this (M-x cd) to a directory that's not a git repository then the link cannot be generated.

It looks like the example links on the readme are broken.
Things like "Example run with console output" go to a page that says "Cannot proxy the given URL".

Thank you :)