[minor] detect empty or falsy stacks

index.js

@@ -1,6 +1,7 @@
 'use strict';
 
-var path = require('path')
+var empty = require('is-empty')
+  , path = require('path')
   , fs = require('fs');
 
 /**
@@ -20,6 +21,11 @@ var path = require('path')
 function fabricator(stack, options) {
   options = options || {};
 
+  //
+  // Empty strings, arrays or objects should not be processed, return early.
+  //
+  if (empty(stack)) return [];
+
   switch (is(stack)) {
     case 'string':
       stack = read(stack, options);

package.json

@@ -1,6 +1,6 @@
 {
   "name": "fabricator",
-  "version": "0.4.4",
+  "version": "0.5.0",
   "description": "Discover collections of constructible instances from strings (filepaths), arrays or objects",
   "main": "index.js",
   "scripts": {
@@ -31,5 +31,8 @@
     "istanbul": "0.3.x",
     "mocha": "2.1.x",
     "pre-commit": "1.0.x"
+  },
+  "dependencies": {
+    "is-empty": "0.0.1"
   }
 }

test/fixtures/index.js

@@ -7,7 +7,7 @@
  * @api private
  */
 function fn() {
-  function Y() { /* nope */ }
+  function Y(x, y) { x = y; }
   Y.prototype.name = '';
 
   return Y;

test/index.test.js

@@ -20,6 +20,13 @@ describe('Fabricator', function () {
     });
   });
 
+  it('returns early if the stack is empty or falsy', function () {
+    var result = fabricator([false]);
+
+    assume(result).to.be.an('array');
+    assume(result.length).to.equal(0);
+  });
+
   it('can init constructors from file paths', function () {
     var result = fabricator(fixtures.string);
 
@@ -67,7 +74,7 @@ describe('Fabricator', function () {
   });
 
   it('throws an error when we receive an invalid type', function (next) {
-    try { fabricator(new Date()); }
+    try { fabricator(Date.now()); }
     catch (e) { next(); }
   });