are their code quality tools that work with kotlin? checkstyle, spotbugs, and error prone are what I use with java.

There's this: https://ktlint.github.io/ It can at least be a starting point to cover some of what you listed

hmm… k, error-prone is a compiler plugin, not sure if maybe it can just be used? same with spotbugs, since it does byte code analysis

I'd give it a shot. I've never worked with either of those two, but they may just work as-is.

Detekt is really good too! I would hope that things checked for by error prone either aren't possible in kotlin or are caught by kotlin compiler.

what’s Detekt?

static code analysis

one of the things EP checks for is an inversion of final… meaning all local vars must be effectively final unless you specify

@Var,

, I’m not sure if this is useful in kotlin, can you create a local/parameter without var/val?

val is final, var is not. So I guess if you used

var

in Kotlin, EP would flag it.