Make it work with https://www.npmjs.com/package/regex

[punkpeye]

The main downside of otherwise amazing https://www.npmjs.com/package/regex package is that it does not work with this plugin.

It would be great power combo! @slevithan

[slevithan]

If @ota-meshi thinks this is a good idea, I'd be all for it. And I'd be happy to help, at least with answering any questions and making changes to Regex+ that might help with this.

There are some things that make this more feasible:

• Regex+ syntax is a strict superset of JS regex syntax with flag v enabled. So apart from Regex+'s relatively minimal new syntax and (implicit) flags, there are no changes to native RegExp syntax.
• Several of Regex+'s additions (implicit flag x, atomic groups, and possessive quantifiers) are based on existing ECMAScript proposals, so supporting them for Regex+ is likely to be reusable for native RegExp in the future.

The biggest challenge I see is that the regex parser eslint-plugin-regexp uses (@eslint-community/regexpp) doesn't support Regex+'s extended syntax and doesn't seem to have a plugin system, so it would need to be forked.

[ota-meshi]

Thank you for the feature request.

It would be great if it were possible to support regexp syntaxes in the future, but I don't think that's possible 😓
I also maintain @eslint-community/regexpp, but working on the parser is very hard for me, even to keep up with the latest syntax.
Can you fork @eslint-community/regexpp to support future syntaxes?

[slevithan]

I'm also not able to work on this for similar reasons.

But maybe there's an opportunity to do something much simpler?

If eslint-plugin-regexp could run on the .toString() (or .source and .flags) of regexes generated by Regex+'s regex template tag, that would presumably provide much of the benefit, and it would mean that eslint-plugin-regexp never has to know about any new syntax.

[ota-meshi]

Hmm... If we don't fork the parser, we won't be able to report to the correct location, so for now I'm hoping someone will create a new parser 🙏