[TypeScript Reference] Attempt to sync netflix typescript changes into working branch (NO MERGE)

.gitignore

@@ -53,3 +53,5 @@ lib
 .xmark.*
 
 .next
+
+__snapshots__

__tests__/clonetest.js

@@ -0,0 +1,27 @@
+// Link.react.test.js
+import React from 'react';
+import {shallow} from 'enzyme';
+import Clone from '../components/headers/clone.js';
+import renderer from 'react-test-renderer';
+
+test('render component', () => {
+  const component = renderer.create(
+    <Clone />,
+  );
+  let tree = component.toJSON();
+  expect(tree).toMatchSnapshot();
+});
+
+test('debounce onclick', () => {
+    let wrapper = shallow(<Clone/>);
+    const cloneMock = jest.fn();
+    wrapper.instance().clone = cloneMock;
+    expect(wrapper.find('span').hasClass('disabled')).toEqual(false);
+    wrapper.instance().onClick();
+    wrapper.instance().onClick();
+    wrapper.instance().onClick();
+    wrapper.instance().onClick();
+    wrapper.instance().onClick();
+    expect(wrapper.find('span').hasClass('disabled')).toEqual(true);
+    expect(cloneMock).toHaveBeenCalledTimes(1);
+});

__tests__/s3test.js

@@ -1,9 +1,8 @@
 // @flow
+const s3Service = require("./../backend/content-providers/s3/s3");
 jest.mock("aws-sdk/clients/s3");
 const awsMock = require("aws-sdk/clients/s3");
 
-const s3Service = require("./../backend/content-providers/s3/s3");
-
 describe("Test S3 service", () => {
   test("getObject returns notebook content", done => {
     awsMock.prototype.getObject = function(params, cb) {