replace graal with karate-js engine about karate HOT 27 OPEN

the build passes on github-actions (that too on Java 23 EA) 🎉

this is a very big deal ! tagging a few power users, please do try this on your local test suites when you get a chance, the thing to look out for is if you have used any JS apis or tricks that we don't yet support @edwardsph @ericdriggs @joelpramos @brown-kaew @fabio-andre-rodrigues @rwong-gw @cl-weclapp @AKushWarrior @bouncysteve @bondar-artem @f-delahaye @dvargas46 @maxandersen @arnault01 @jkeys089 @bischoffdev @staffier

this is the issue that tipped me over the edge: #2536

full changeset: ba931c8

from karate.

@maxandersen pretty sure Nashorn does not support some ES6 features - the big one being arrow-functions. I could be wrong on specifics, but it certainly fails the small set of ECMA conformance tests that we tried. Interestingly there are some folks who are keeping Rhino alive - for e.g. the HTMLUnit project who are now looking for new engine.

from karate.

Thank you for directly addressing this risk. I look forward to the potential improvements in speed, performance, concurrency, flakiness, and reduced maintenance and reduced frequency of breaking js engine changes.

Excellent start.

from karate.

pretty sure Nashorn does not support some ES6 features - the big one being arrow-functions

Basic arrow functions are supported (in --language=es6 mode).

from karate.

very interesting - will try it out.

I have to ask - why not just use and possibly fork nashhorn standalone? https://github.com/openjdk/nashorn ..maybe as an option?

anyhow - just curious. will see if i can make karata with this PR run jbang testsuite in near future.

from karate.