Export all classes and functions to one namespace like in Lodash

In Lodash all function are in the _ namespace. This namespace is located in the window. So we can access the namespace anywhere. Want to achieve the same but facing an issue. I have to export all my classes manually to a namespace and then to the window.

I am using webpack to build the project. In the index.ts file:

import _Id from './model/general/Id'

namespace n {
    export import Id = _Id.Id
}

globalThis.n = n

Looks not good. How to solve the issue? Maybe there is a package that does the job in npm.