Practical ES6

Chapter 12: Understanding ES6 Modules

by Craig Buckler

This chapter explores ES6 modules, showing how they can be used today with the help of a transpiler.

Almost every language has a concept of modules — a way to include functionality declared in one file within another. Typically, a developer creates an encapsulated library of code responsible for handling related tasks. That library can be referenced by applications or other modules.

The benefits:

1. Code can be split into smaller files of self-contained functionality.
2. The same modules can be shared across any number of applications.
3. Ideally, modules need never be examined by another developer, because they’ve has been proven to work.
4. Code referencing a module understands it’s a dependency. ...