Is there a way to use two kotlin/js projects with browser target so the first has the second as a dependency, but I would want to have them connected maybe like modules in IntelliJ project structure to work with it like with one project, so if I change something in the second and do module build in first it would work automatically ?

You can have multiple gradle subprojects, each set up as kotlin/js browser projects, and then one project can depend on the other project

Are you talking about submodules in gradle ?

Yes

I don’t want them to be gradle submodules. I have a library and let’s say 10 different projects which use it, I would need to be able to open any of these projects with this library in one idea and work with it as if they would be submoduls

If you want them to live in different projects, you can publish to maven local. Then add it as a dependency in the other projects, making sure to add mavenLocal as a repository.

Actually it’s the only idea I have, but when I used maven it worked without publishing to mavenlocal, IntelliJ just knew that my dependency is opened in the same window and compiled that code

it sounds like you want composite builds? So you can have a Gradle project and use another (independent) Gradle project as a dependency. IntelliJ understands composite builds, so it will show both projects in one IntelliJ instance

Is it for workers?

Workers ?

I use custom Gradle configuration to link subprojects

Probably, but would be ideal without need of writing own plugin

Do you use second subproject as additional Webpack entry point?

No ?