Does webpack wrap esm imports in an object?

Question

JavaScript

Hello!
After adding type: module to package.json, redux-thunk stopped working.
I connect like this: console.log(thunk) displays the following:
import thunk from "redux-thunk";

{
  default: [Function: middleware] {
    withExtraArgument: [Function: createThunkMiddleware]
  }
}

That is, the imported module is wrapped in an object with the default property. What could it be?