Using import in index.js in webpack without export in import file, why does it work?

Question

JavaScript

I am new to webpack and component architecture. I'm also learning JavaScript at the same time. The question is, I have an index.js in which I import component scripts using the import. But in component scripts, I don't use export. However, all scripts work. I can't understand why. Node.js has not yet been studied, webpack has been configured by tutorial articles and videos.

Answer 1

https://learn.javascript.ru/import-export
The crystal ball suggests that perhaps some global variables are declared in the imported component scripts. This is best avoided, as the whole point of modules and webpack is to avoid globals. What is used in the module is what is used in it import.