Are named capture groups supported by TeaVM when using java.util.regex.Pattern?

[jakrous]

My Java implementation using java.util.regex.Pattern is able to process a regex with a named capture group such as "(?<year>\\d{4})" however when I attempt to pass this regex to the JSExport-ed JavaScript function, I am met with an error without additional context.

For added context, I have a simple Java function named findMatches. This function performs a straightforward regex test and returns the list of matches. I've annotated this function with @JSExport and use the resulting JavaScript file in my React app. Unnamed capture groups and other regular expressions are processed without issue. Named capture groups unfortunately fail.

Is there a limitation within TeaVm that may be causing this?

[konsoletyper]

Yes, there are some limitations of regexes in TeaVM. The regex engine was itself taken from Harmony, which stuck at Java 7. Although I constantly improve some parts of Java standard library to fit latest Java specs, with regex I never had a chance to make improvements (and I doubt if have one in observable future).