Regex causes "Quantifier has nothing to repeat" about hermes

[fonov]

For me, i encountered an error when use named capturing group in regex

(?<Name>x)

[avp]

Hermes does not yet support named capture groups in RegExp. We're adding newer JS features incrementally and named capture groups will be implemented in the future. Unfortunately, priority for this particular feature is low because we have other features to implement first, but we're open to working with the community on pull requests to add it.

You can see more information about RegExp support here:
https://github.com/facebook/hermes/blob/master/doc/RegExp.md

[Kikketer]

I've discovered the issue, I needed to add some "seemingly useless" escapes. Just a challenge with different regex parsers:

/{{2}/

turned to:

/\{{2}/

Fixes the issue. Just something to note for any other developer out there that has some regex and it's only failing on Hermes.

[juananime]

If any one still running this issue despite solutions mention above, I could sort it out adding he @babel/preset-env to the dev dependencies, apparently, that babel has de plugin that fixes this reg exp issue

[samzmann]

@juananime I tried adding @babel/preset-env, rebuild, restart packager, etc. but still same issue. Can you plz give a little more details about what you did to get your regex working?

[hanancs]

For me, i encountered an error when use named capturing group in regex

(?<Name>x)

How did you solve it?

[fonov]

For me, i encountered an error when use named capturing group in regex
(?<Name>x)

How did you solve it?

just use didn't use named capturing group because it doesn't have native support in hermes. Maybe in fresh version of hermes was implemented, I didn't check it.

[visitsb]

what @juananime means is this