Question

in node.js, is there any shortcut to export ALL functions in a given file? i want to do this for unit testing purposes, as my unit tests are in a separate file from my production code.

I know i can go through and export each function manually, as in:

exports.myFunction = myFunction;

But i’m wondering if there is a simpler/slicker way to do this.

(and yes, i realize for modularity reasons it isn’t always a good idea to export all functions, but for unit testing purposes you do want to see all the little functions so you can test them piece by piece.)

Thanks!

Answer 1

You could do something like this:

// save this into a variable, so it can be used reliably in other contexts
var self = this;

// the scope of the file is the `exports` object, so `this === self === exports`
self.fnName = function () { ... }

// call it the same way
self.fnName();

Or this:

// You can declare your exported functions here
var file = module.exports = {
  fn1: function () {
    // do stuff...
  },
  fn2: function () {
    // do stuff...
  }
}

// and use them like this in the file as well
file.fn1();

Or this:

// each function is declared like this. Have to watch for typeos, as we're typing fnName twice
fnName = exports.fnName = function () { ... }

// now you can use them as file-scoped functions, rather than as properties of an object
fnName();