A modern programming language that makes developers happier.

kotlinlang

KotlinJS + React + Bootstrap is possible or no

Definitely. I've written a project with it already.

<https://gitlab.com/lt.petuska/hazelcast-explorer/-/tree/master/hazelcast-explorer/src/frontendMain/kotlin/lt/petuska/hazelcast/explorer|https://gitlab.com/lt.petuska/hazelcast-explorer/-/tree/master/hazelcast-explorer/src/frontendMain/kotlin/lt/petuska/hazelcast/explorer> if you want to have a look (it's quite messy though as it was one of my first projects)

I've done multiple projects with this combination. Here are some wrapper examples: <https://github.com/mipt-npm/visionforge/blob/dev/ui/bootstrap/src/main/kotlin/hep/dataforge/vision/bootstrap/bootstrap.kt|https://github.com/mipt-npm/visionforge/blob/dev/ui/bootstrap/src/main/kotlin/hep/dataforge/vision/bootstrap/bootstrap.kt>