refactor: sort-files -> common utils

utils/__fixtures__/challenges.js

@@ -0,0 +1,50 @@
+exports.challengeFiles = {
+  indexcss: {
+    contents: 'some css',
+    error: null,
+    ext: 'css',
+    head: '',
+    history: ['index.css'],
+    key: 'indexcss',
+    name: 'index',
+    path: 'index.css',
+    seed: 'some css',
+    tail: ''
+  },
+  indexhtml: {
+    contents: 'some html',
+    error: null,
+    ext: 'html',
+    head: '',
+    history: ['index.html'],
+    key: 'indexhtml',
+    name: 'index',
+    path: 'index.html',
+    seed: 'some html',
+    tail: ''
+  },
+  indexjs: {
+    contents: 'some js',
+    error: null,
+    ext: 'js',
+    head: '',
+    history: ['index.js'],
+    key: 'indexjs',
+    name: 'index',
+    path: 'index.js',
+    seed: 'some js',
+    tail: ''
+  },
+  indexjsx: {
+    contents: 'some jsx',
+    error: null,
+    ext: 'jsx',
+    head: '',
+    history: ['index.jsx'],
+    key: 'indexjsx',
+    name: 'index',
+    path: 'index.jsx',
+    seed: 'some jsx',
+    tail: ''
+  }
+};