Only require file types that Gatsby designates as possible pages

lib/isomorphic/create-routes.js

@@ -82,6 +82,7 @@ module.exports = (files, pagesReq) => {
 
   const staticFileTypes = [
     'md',
+    'markdown',
     'html',
     'json',
     'yaml',

lib/utils/glob-pages.js

@@ -3,21 +3,10 @@ import glob from 'glob'
 import buildPage from './build-page'
 const debug = require('debug')('gatsby:glob')
 
+import pageFileTypes from './page-file-types'
+
 function globQuery (directory) {
-  // Make this list easy to modify through the config?
-  // Or just keep adding extensions...?
-  const fileTypesToGlob = [
-    'coffee',
-    'cjsx',
-    'jsx',
-    'js',
-    'md',
-    'html',
-    'json',
-    'yaml',
-    'toml',
-  ]
-  const fileGlobQuery = fileTypesToGlob.map((type) => `*.${type}`)
+  const fileGlobQuery = pageFileTypes.map((type) => `*.${type}`)
   const joinedFileQuery = fileGlobQuery.join('|')
   return `${directory}/pages/**/?(${joinedFileQuery})`
 }

lib/utils/load-context.js

@@ -2,10 +2,10 @@
 // This file is auto-written and used by Gatsby to require
 // files from your pages directory.
 module.exports = function (callback) {
-  let context = require.context('./pages', true)
+  let context = require.context('./pages', true, /(coffee|cjsx|jsx|js|markdown|md|html|json|yaml|toml)$/)
   if (module.hot) {
     module.hot.accept(context.id, () => {
-      context = require.context('./pages', true)
+      context = require.context('./pages', true, /(coffee|cjsx|jsx|js|markdown|md|html|json|yaml|toml)$/)
       return callback(context)
     })
   }

lib/utils/page-file-types.js

@@ -0,0 +1,14 @@
+const pageFileTypes = [
+  'coffee',
+  'cjsx',
+  'jsx',
+  'js',
+  'markdown',
+  'md',
+  'html',
+  'json',
+  'yaml',
+  'toml',
+]
+
+export default pageFileTypes