Fix getConfig require needing .default

Author: exogen

config.js

@@ -1,4 +1,4 @@
-var getConfig = require("next/config");
+var getConfig = require("next/config").default;
 
 var { serverRuntimeConfig, publicRuntimeConfig } = getConfig();
 

config.test.js

@@ -1,12 +1,13 @@
 jest.mock(
   "next/config",
-  () =>
-    function getConfig() {
+  () => ({
+    default: function getConfig() {
       return {
         serverRuntimeConfig: { secret: 12345 },
         publicRuntimeConfig: { api: "/graphql" }
       };
-    },
+    }
+  }),
   { virtual: true }
 );
 

package.json

@@ -18,6 +18,7 @@
     "next": ">=5.1.0"
   },
   "devDependencies": {
+    "config": "^2.0.1",
     "jest": "^23.5.0",
     "prettier": "^1.14.2"
   }

yarn.lock

@@ -627,6 +627,12 @@ concat-map@0.0.1:
   version "0.0.1"
   resolved "https://registry.yarnpkg.com/concat-map/-/concat-map-0.0.1.tgz#d8a96bd77fd68df7793a73036a3ba0d5405d477b"
 
+config@^2.0.1:
+  version "2.0.1"
+  resolved "https://registry.yarnpkg.com/config/-/config-2.0.1.tgz#995ccc8175460578d646ac0a2e4018ffa44ca046"
+  dependencies:
+    json5 "^1.0.1"
+
 console-control-strings@^1.0.0, console-control-strings@~1.1.0:
   version "1.1.0"
   resolved "https://registry.yarnpkg.com/console-control-strings/-/console-control-strings-1.1.0.tgz#3d7cf4464db6446ea644bf4b39507f9851008e8e"
@@ -1898,6 +1904,12 @@ json5@^0.5.1:
   version "0.5.1"
   resolved "https://registry.yarnpkg.com/json5/-/json5-0.5.1.tgz#1eade7acc012034ad84e2396767ead9fa5495821"
 
+json5@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/json5/-/json5-1.0.1.tgz#779fb0018604fa854eacbf6252180d83543e3dbe"
+  dependencies:
+    minimist "^1.2.0"
+
 jsprim@^1.2.2:
   version "1.4.1"
   resolved "https://registry.yarnpkg.com/jsprim/-/jsprim-1.4.1.tgz#313e66bc1e5cc06e438bc1b7499c2e5c56acb6a2"