fix(core): update

test/test.type.ts

@@ -0,0 +1,8 @@
+import { tap, expect } from '@pushrocks/tapbundle';
+import * as smartstring from '../ts';
+
+tap.test('should state valuid utf8', async () => {
+  expect(smartstring.type.isUtf8('hithere')).to.be.true;
+});
+
+tap.start();