How to import an entire file (javascript) with WebPack?

I started to study WebPack now, I was able to use it normally, however, when I want to import something from another file I need to give:

import {abc} from './my-file.js';

and the file that was imported:

export function abc() {
    console.log('MODULO 1 do projeto');
}

So far so good. But how do I import the whole file? No need to just specify the function or variable I want? I want to import the file and be able to use everything in it (variables, functions and etc ...).

I tried to give only:

import './my-file.js';

However, it does not recognize anything inside this file, it compiles normally, but an error occurs when invoking functions (function has not been defined).

So, is there any way I can import the entire file?