How do I cache bust imported modules in es6?

Question

ES6 modules allows us to create a single point of entry like so:

Answer 1

Use of relative path works for me:

import foo from './foo';

or

import foo from './../modules/foo';

instead of

import foo from '/js/modules/foo';

EDIT

Since this answer is down voted, I update it. The module is not always reloaded. The first time, you have to reload the module manually and then the browser (at least Chrome) will "understand" the file is modified and then reload the file every time it is updated.