What kind of wrappers do module builders create (require, wrapperBootstrap, commonjs, amd, etc.), and how to get rid of them?

Question

JavaScript

What kind of obscure wrappers do assemblers create in the final javascript file? How to get rid of these wrapper functions?

Answer 1

And how do you want to get a modular system without wrappers?
These wrappers are the essence of bundling, if you don't need it, the solution is simple: don't use a bundler.
By the way, I didn’t understand what Gulp and NPM are doing in the tags, they don’t create any wrappers.