Export modules useful for moving stack navigator outside of core

src/createNavigationContainer.js

@@ -6,7 +6,7 @@ import NavigationActions from './NavigationActions';
 import getNavigation from './getNavigation';
 import invariant from './utils/invariant';
 import docsUrl from './utils/docsUrl';
-import { urlToPathAndParams } from './routers/pathUtils';
+import { urlToPathAndParams } from './routers/PathUtils';
 
 function isStateful(props) {
   return !props.navigation;

src/react-navigation.js

@@ -88,6 +88,18 @@ module.exports = {
   get SwitchRouter() {
     return require('./routers/SwitchRouter').default;
   },
+  get createConfigGetter() {
+    return require('./routers/createConfigGetter').default;
+  },
+  get getScreenForRouteName() {
+    return require('./routers/getScreenForRouteName').default;
+  },
+  get validateRouteConfigMap() {
+    return require('./routers/validateRouteConfigMap').default;
+  },
+  get PathUtils() {
+    return require('./routers/PathUtils').default;
+  },
 
   // Views
   get Transitioner() {

src/routers/StackRouter.js

@@ -6,7 +6,7 @@ import StateUtils from '../StateUtils';
 import validateRouteConfigMap from './validateRouteConfigMap';
 import invariant from '../utils/invariant';
 import { generateKey } from './KeyGenerator';
-import { createPathParser } from './pathUtils';
+import { createPathParser } from './PathUtils';
 
 function behavesLikePushAction(action) {
   return (

src/routers/SwitchRouter.js

@@ -5,7 +5,7 @@ import createConfigGetter from './createConfigGetter';
 import NavigationActions from '../NavigationActions';
 import StackActions from './StackActions';
 import validateRouteConfigMap from './validateRouteConfigMap';
-import { createPathParser } from './pathUtils';
+import { createPathParser } from './PathUtils';
 
 const defaultActionCreators = (route, navStateKey) => ({});
 

src/routers/__tests__/PathHandling-test.js

@@ -6,7 +6,7 @@ import SwitchRouter from '../SwitchRouter';
 import StackRouter from '../StackRouter';
 import StackActions from '../StackActions';
 import NavigationActions from '../../NavigationActions';
-import { urlToPathAndParams } from '../pathUtils';
+import { urlToPathAndParams } from '../PathUtils';
 import { _TESTING_ONLY_normalize_keys } from '../KeyGenerator';
 
 beforeEach(() => {

src/routers/__tests__/pathUtils-test.js

@@ -1,4 +1,4 @@
-import { urlToPathAndParams } from '../pathUtils';
+import { urlToPathAndParams } from '../PathUtils';
 
 test('urlToPathAndParams empty', () => {
   const { path, params } = urlToPathAndParams('foo://');