From 1e333a09710c064b8393a14d421b0ea23a73ada1 Mon Sep 17 00:00:00 2001
From: Arunoda Susiripala <arunoda.susiripala@gmail.com>
Date: Tue, 20 Dec 2016 00:29:59 +0530
Subject: [PATCH] Update url.pushTo and url.replaceTo update only on dev. In
 order to warn the user, now we are using a warn function which is located in
 the lib/utils module.

---
 lib/app.js   | 5 +++--
 lib/css.js   | 5 ++---
 lib/utils.js | 5 +++++
 3 files changed, 10 insertions(+), 5 deletions(-)
 create mode 100644 lib/utils.js

diff --git a/lib/app.js b/lib/app.js
index fe419c8a8885b..126ed594f24a2 100644
--- a/lib/app.js
+++ b/lib/app.js
@@ -1,5 +1,6 @@
 import React, { Component, PropTypes } from 'react'
 import { AppContainer } from 'react-hot-loader'
+import { warn } from './utils'
 
 export default class App extends Component {
   static childContextTypes = {
@@ -67,7 +68,7 @@ function propsToState (props) {
     back: () => router.back(),
     push: (url, as) => router.push(url, as),
     pushTo: (href, as) => {
-      console.warn(`Warning: 'url.pushTo()' is deprecated. Please use 'url.push()' instead.`)
+      warn(`Warning: 'url.pushTo()' is deprecated. Please use 'url.push()' instead.`)
       const pushRoute = as ? href : null
       const pushUrl = as || href
 
@@ -75,7 +76,7 @@ function propsToState (props) {
     },
     replace: (url, as) => router.replace(url, as),
     replaceTo: (href, as) => {
-      console.warn(`Warning: 'url.replaceTo()' is deprecated. Please use 'url.replace()' instead.`)
+      warn(`Warning: 'url.replaceTo()' is deprecated. Please use 'url.replace()' instead.`)
       const replaceRoute = as ? href : null
       const replaceUrl = as || href
 
diff --git a/lib/css.js b/lib/css.js
index 18464ecf845be..0714d6460c009 100644
--- a/lib/css.js
+++ b/lib/css.js
@@ -1,8 +1,7 @@
+import { warn } from './utils'
 const css = require('glamor')
 
-if (process.env.NODE_ENV !== 'production') {
-  console.error('Warning: \'next/css\' is deprecated. Please use styled-jsx syntax instead.')
-}
+warn('Warning: \'next/css\' is deprecated. Please use styled-jsx syntax instead.')
 
 /**
  * Expose style as default and the whole object as properties
diff --git a/lib/utils.js b/lib/utils.js
new file mode 100644
index 0000000000000..55e0c29694fc4
--- /dev/null
+++ b/lib/utils.js
@@ -0,0 +1,5 @@
+export function warn (message) {
+  if (process.env.NODE_ENV !== 'production') {
+    console.error(message)
+  }
+}