J.Chris Findlay

incomplete *Lazy coverage

2

While you have covered all variants of `{,}`, including `*` and `+`, the lazy alternatives are missing for `exactly` and `atLeast`.

lookBehind API missing from playground

3

The docs mention `assertBehind` and `assertNotBenind` but they don't work in the playground. (Also, JS didn't used to support lookBehind, only lookAhead - might be worth documenting when this changed?)

Playground needs to surface console errors in the UI

1

Forgetting an `.end()` is reasonably common as you get used to using this, but the error only shows on the console - if you don't happen to have it open...