react-router MemoryRouter.initialEntries

* Use History.LocationDescriptor[]
* Add example

types/react-router/index.d.ts

@@ -30,7 +30,7 @@ declare module 'react-router' {
 		}
 	}
   interface MemoryRouterProps {
-    initialEntries?: H.Location[];
+    initialEntries?: H.LocationDescriptor[];
     initialIndex?: number;
     getUserConfirmation?: () => void;
     keyLength?: number;

types/react-router/test/MemoryRouter.tsx

@@ -0,0 +1,43 @@
+import * as React from 'react'
+import {
+  MemoryRouter,
+  Route,
+  Link
+} from 'react-router-dom'
+
+const initialRouterEntries = [
+  '/',
+  {
+    pathname: '/about'
+  }
+]
+
+const MemoryRouterExample = () => (
+  <MemoryRouter initialEntries={[initialRouterEntries]} initialIndex={1}>
+    <div>
+      <ul>
+        <li><Link to="/">Home</Link></li>
+        <li><Link to="/about">About</Link></li>
+      </ul>
+
+      <hr/>
+
+      <Route exact path="/" component={Home}/>
+      <Route path="/about" component={About}/>
+    </div>
+  </MemoryRouter>
+)
+
+const Home = () => (
+  <div>
+    <h2>Home</h2>
+  </div>
+)
+
+const About = () => (
+  <div>
+    <h2>About</h2>
+  </div>
+)
+
+export default MemoryRouterExample

types/react-router/tsconfig.json

@@ -21,6 +21,7 @@
     "test/CustomLink.tsx",
     "test/ModalGallery.tsx",
     "test/NavigateWithContext.tsx",
+    "test/MemoryRouter.tsx",
     "test/NoMatch.tsx",
     "test/Params.tsx",
     "test/PreventingTransitions.tsx",