Test migration to jest by hand

Apparently using regular expressions is way easier.

test/everyNth/everyNth.js

@@ -0,0 +1,2 @@
+const everyNth = (arr, nth) => arr.filter((e, i) => i % nth === nth - 1);
+module.exports = everyNth;

test/everyNth/everyNth.test.js

@@ -0,0 +1,9 @@
+const expect = require('expect');
+const everyNth = require('./everyNth.js');
+
+
+  test('everyNth is a Function', () => {
+  expect(everyNth).toBeInstanceOf(Function);
+});
+  t.deepEqual(everyNth([1, 2, 3, 4, 5, 6], 2), [ 2, 4, 6 ], "Returns every nth element in an array");
+