From c132a9ca20ca18d863ec5185699c61a916bd526a Mon Sep 17 00:00:00 2001
From: Jimmy Jia <tesrin@gmail.com>
Date: Wed, 26 Oct 2016 21:21:59 -0400
Subject: [PATCH] Factor out PromiseUtils

---
 src/PromiseUtils.js    | 15 +++++++++++++++
 src/index.js           |  1 +
 src/resolveElements.js | 14 +-------------
 3 files changed, 17 insertions(+), 13 deletions(-)
 create mode 100644 src/PromiseUtils.js

diff --git a/src/PromiseUtils.js b/src/PromiseUtils.js
new file mode 100644
index 00000000..d2cc2a4b
--- /dev/null
+++ b/src/PromiseUtils.js
@@ -0,0 +1,15 @@
+import isPromise from 'is-promise';
+
+const UNRESOLVED = {};
+
+export function checkResolved(value) {
+  if (!isPromise(value)) {
+    return value;
+  }
+
+  return Promise.race([value, UNRESOLVED]);
+}
+
+export function isResolved(value) {
+  return value !== UNRESOLVED;
+}
diff --git a/src/index.js b/src/index.js
index 7dab254c..d1029dfa 100644
--- a/src/index.js
+++ b/src/index.js
@@ -13,6 +13,7 @@ export HttpError from './HttpError';
 export Link from './Link';
 export Matcher from './Matcher';
 export matchReducer from './matchReducer';
+export PromiseUtils from './PromiseUtils';
 export Redirect from './Redirect';
 export RedirectException from './RedirectException';
 export resolveElements from './resolveElements';
diff --git a/src/resolveElements.js b/src/resolveElements.js
index b448b145..4e42090a 100644
--- a/src/resolveElements.js
+++ b/src/resolveElements.js
@@ -2,19 +2,7 @@ import isPromise from 'is-promise';
 import React from 'react';
 import warning from 'warning';
 
-const UNRESOLVED = {};
-
-function checkResolved(value) {
-  if (!isPromise(value)) {
-    return value;
-  }
-
-  return Promise.race([value, UNRESOLVED]);
-}
-
-function isResolved(value) {
-  return value !== UNRESOLVED;
-}
+import { checkResolved, isResolved } from './PromiseUtils';
 
 function createElements(match, Components, matchData) {
   const { routes, routeParams: matchRouteParams } = match;