refactor: gatsby-browser, gatsby-node

adds .eslintcache to gitignore

.eslintrc

@@ -6,13 +6,13 @@
         "import"
     ],
     "rules": {
+        "global-require": [0],
         "react/jsx-filename-extension": [0],
         "react/prefer-es6-class": [0],
-        "global-require": [0],
         "react/prefer-stateless-function": [0],
         /* to allow importing 'gatsby-helpers' */
         "import/no-extraneous-dependencies": [0],
         "import/no-unresolved": [0],
         "import/extensions": [0]
     }
-}
+}

.gitignore

@@ -1,6 +1,8 @@
 node_modules/
 npm-debug.log
 
+.eslintcache
+
 public
 
 .gatsby-context.js

gatsby-browser.js

@@ -1,8 +1,8 @@
-import ReactGA from 'react-ga'
-import {config} from 'config'
+import ReactGA from 'react-ga';
+import { config } from 'config';
 
 ReactGA.initialize(config.googleAnalyticsId);
 
-exports.onRouteUpdate = (state, page, pages) => {
+exports.onRouteUpdate = (state) => {
   ReactGA.pageview(state.pathname);
-};
+};

gatsby-node.js

@@ -1,22 +1,22 @@
-var rucksack = require('rucksack-css')
-var lost = require("lost")
-var cssnext = require("postcss-cssnext")
+const rucksack = require('rucksack-css');
+const lost = require('lost');
+const cssnext = require('postcss-cssnext');
 
-exports.modifyWebpackConfig = function(config, env) {
-    config.merge({
-        postcss: [
-            lost(),
-            rucksack(),
-            cssnext({
-                browsers: ['>1%', 'last 2 versions']
-            })
-        ]
-    })
+exports.modifyWebpackConfig = function (config) {
+  config.merge({
+    postcss: [
+      lost(),
+      rucksack(),
+      cssnext({
+        browsers: ['>1%', 'last 2 versions'],
+      }),
+    ],
+  });
 
-    config.loader('svg', {
-       test: /\.(svg)(\?v=[0-9]\.[0-9]\.[0-9])?$/,
-       loader: 'file-loader',
-    })
+  config.loader('svg', {
+    test: /\.(svg)(\?v=[0-9]\.[0-9]\.[0-9])?$/,
+    loader: 'file-loader',
+  });
 
-    return config
-};
+  return config;
+};