using js-to-ts converter on JSX. (#3906)

Added 'include' parameter to tsconfig to tell the compiler to only look inside the src directory

packages/slate-hyperscript/test/fixtures/cursor-element-nested-end.tsx

@@ -0,0 +1,38 @@
+/** @jsx jsx */
+import { jsx } from 'slate-hyperscript'
+
+export const input = (
+  <editor>
+    <element>
+      <element>
+        word
+        <cursor />
+      </element>
+    </element>
+  </editor>
+)
+export const output = {
+  children: [
+    {
+      children: [
+        {
+          children: [
+            {
+              text: 'word',
+            },
+          ],
+        },
+      ],
+    },
+  ],
+  selection: {
+    anchor: {
+      path: [0, 0, 0],
+      offset: 4,
+    },
+    focus: {
+      path: [0, 0, 0],
+      offset: 4,
+    },
+  },
+}