I mean, they have been solved. With the exception of String#matchAll (which is currently a Stage 3 proposal), all these features are part of ES2018 and shipping

I mean, they have been solved. With the exception of String#matchAll (which is currently a Stage 3 proposal), all these features are part of ES2018 and shipping in Chrome. Other browsers implement some of them already and are working on shipping more. You can view the implementation status of the various features here: https://kangax.github.io/compat-table/es2016plus/#test-RegExp_named_capture_groups https://kangax.github.io/compat-table/es2016plus/#test-RegEx...