Run util.types tests in browsers

Author: lukechilds

test/browser/index.js

@@ -2,3 +2,4 @@ require('./inspect');
 require('./is');
 require('./promisify');
 require('./callbackify');
+require('./types');

test/browser/types.js

@@ -0,0 +1,7 @@
+var test = require('tape');
+var util = require('../../');
+
+test('util.types', function (t) {
+  t.doesNotThrow(() => require('../node/types'));
+  t.end();
+});