How do you share constants in NodeJS modules?

Question

Currently I\'m doing this:

foo.js

const FOO = 5;

module.exports = {
    FOO: FOO
};

And using it in bar.js:<

Answer 1

I ended up doing this by exporting a frozen object with anonymous getter functions, rather than the constants themselves. This reduces the risk of nasty bugs introduced due to a simple typo of the const name, as a runtime error will be thrown in case of a typo. Here's a full example that also uses ES6 Symbols for the constants, ensuring uniqueness, and ES6 arrow functions. Would appreciate feedback if anything in this approach seems problematic.

'use strict';
const DIRECTORY = Symbol('the directory of all sheets');
const SHEET = Symbol('an individual sheet');
const COMPOSER = Symbol('the sheet composer');

module.exports = Object.freeze({
  getDirectory: () => DIRECTORY,
  getSheet: () => SHEET,
  getComposer: () => COMPOSER
});