feat: update deps and cleanup examples

Author: reconbot

lib/foo-test.ts

@@ -0,0 +1,8 @@
+import { assert } from 'chai'
+import { foo } from './foo'
+
+describe('foo', () => {
+  it('loads', () => {
+    assert.equal(foo, 'foo')
+  })
+})

lib/foo.ts

@@ -0,0 +1 @@
+export const foo = 'foo'

lib/index.ts

@@ -1 +1 @@
-export { serial } from './serial'
+export { foo } from './foo'