fix

book/node_modules/array-difference/test/index.js

@@ -0,0 +1,8 @@
+var difference = require("../");
+var test = require("tape");
+
+test("difference", function(t) {
+  var result = difference([3, 1, 2, 4], [5, 4, 3, 6]);
+  t.deepEqual(result, [1, 2, 5, 6]);
+  t.end();
+});