Generalize _.sample over the collection types

Author: jgonggrijp

modules/sample.js

@@ -1,6 +1,6 @@
 import isArrayLike from './_isArrayLike.js';
 import clone from './clone.js';
-import values from './values.js';
+import toArray from './toArray.js';
 import getLength from './_getLength.js';
 import random from './random.js';
 import times from './times.js';
@@ -10,7 +10,7 @@ import times from './times.js';
 // If **n** is not specified, returns a single random element.
 // The internal `guard` argument allows it to work with `_.map`.
 export default function sample(obj, n, guard) {
-  var sample = isArrayLike(obj) ? null : values(obj);
+  var sample = isArrayLike(obj) ? null : toArray(obj);
   obj = sample || obj;
   var length = getLength(obj);
   if (n == null || guard) return obj[random(length - 1)];