From 28bb93734c94a91571257c85b37af39869f8e300 Mon Sep 17 00:00:00 2001
From: Rhys Evans <wheresrhys@gmail.com>
Date: Sun, 8 Nov 2015 20:07:07 +0000
Subject: [PATCH] throw helpful error to diagnose broken builds

---
 README.md     | 1 +
 karma.conf.js | 2 +-
 package.json  | 2 +-
 src/client.js | 4 ++++
 4 files changed, 7 insertions(+), 2 deletions(-)

diff --git a/README.md b/README.md
index b831e5cc..624cc4f2 100644
--- a/README.md
+++ b/README.md
@@ -5,6 +5,7 @@ Mock http requests made using fetch (or [isomorphic-fetch](https://www.npmjs.com
 - Browser tests: `require('fetch-mock)` 
 - Server side tests running in nodejs 4 or higher: `require('fetch-mock/server')`
 - Server side tests running in nodejs 0.12 or lower: `require('fetch-mock/es5/server)`
+
 You will need to ensure `fetch` and `Promise` are already available as globals in your environment
 
 
diff --git a/karma.conf.js b/karma.conf.js
index dd3540e0..1a7090cf 100644
--- a/karma.conf.js
+++ b/karma.conf.js
@@ -12,7 +12,7 @@ module.exports = function(karma) {
 			'test/client.js': ['browserify']
 		},
 		browserify: {
-				transform: ['babelify'],
+				transform: [['babelify', {	presets: ['es2015'] }]],
 				debug: true
 		},
 		browsers: ['Chrome'],
diff --git a/package.json b/package.json
index 38b4cc99..efaeb190 100644
--- a/package.json
+++ b/package.json
@@ -32,7 +32,7 @@
     "babel": "^6.0.15",
     "babel-cli": "^6.1.2",
     "babel-preset-es2015": "^6.1.2",
-    "babelify": "^7.0.0",
+    "babelify": "^7.2.0",
     "browserify": "^12.0.0",
     "chai": "^2.3.0",
     "karma": "^0.12.31",
diff --git a/src/client.js b/src/client.js
index 6c36379d..2bfaeaa5 100644
--- a/src/client.js
+++ b/src/client.js
@@ -1,5 +1,9 @@
 'use strict';
 
+if (!window) {
+	throw 'Incorrect fetch-mock: require(\'fetch-mock/server\') in nodejs >= 4, or require(\'fetch-mock/es5/server\' in nodejs 0.12.x';
+}
+
 const FetchMock = require('./fetch-mock');
 
 module.exports = new FetchMock({