Kotlin multiplatforme lib reuse in npm

I have a multiplatform project (it’s a librariy), that I build with target js(IR) and jvm.

the js build generate a klib file, and a package.json and a .d.ts file.

My question is:

  1. where are the js compiled source stored? shouldn’t it be in some -js.jar file, or at list in the -js.jlib file?
  2. why is there no archive file containing the d.ts and the package.json?
  3. How can I reuse it in some local npm project ?(without having to publish it on a npm registry)