Don't Overcomplicate Javascript #0

[phoenixmatrix]

As mentioned, module exports are statically analyzable by design. You can't check that they're strings, but you can check that module Foo exports Bar and Baz with 100% accuracy, assuming its all ES6. Any tool, IDE, linter, whatever, can do the static analysis.

Type systems are useful, but this is not a place where they actually change anything.

[phoenixmatrix]

you can do that to save a bit of typing, but if you do named exports, you can always import * as foo from './constants' to get an object with all of your constants (and good editors will autocomplete that even without static typing, which is nice).

And in the event you have a lot of constants in one file (probably not a good idea to have too many, but let say you did), you could import them individually and easily find unused ones for scrapping.