I use dagger2 module, and in java I make all provider methods static for optimizing performance - not creating module instance. How can I make this in kotlin? companion objects always create its instance, or is compiler smart enough to not create the instance if all methods are @jvmstatic?

While I think you are way over-optimizing, I think that companion objects compile to a separate singleton class with thread safe lazy initialization. All

@JvmStatic

methods will be static methods, which don’t trigger initialization of the singleton I believe. I could be wrong. Worst case you can write top-level functions

from what I see companion objects are eager + still creates it regardless all methods being static, damn