Hello all, has anybody had performance issues with...

# javascript

[Kios]

Hello all, has anybody had performance issues with kotlin-js, as per this bug?:
https://youtrack.jetbrains.com/issue/KT-24784

[Karel Petránek]

Yes, even wrote a custom ArrayList implementation with unsafeCast just to avoid the type checking penalty in hot loops. Really annoying that there is no production mode/flag to disable the checks.

[Kios]

Wow this is really absurd. It's no wonder Kotlin-js isn't more broadly used.
Thanks for the reply!