Remove underscore and replace with Lodash

Fixes #138

lib/loaders/markdown-loader/index.js

@@ -1,7 +1,7 @@
 import frontMatter from 'front-matter'
 import markdownIt from 'markdown-it'
 import hljs from 'highlight.js'
-import _ from 'underscore'
+import objectAssign from 'object-assign'
 
 const highlight = (str, lang) => {
   if ((lang !== null) && hljs.getLanguage(lang)) {
@@ -31,7 +31,7 @@ module.exports = function (content) {
   this.cacheable()
   const meta = frontMatter(content)
   body = md.render(meta.body)
-  const result = _.extend({}, meta.attributes, {
+  const result = objectAssign({}, meta.attributes, {
     body,
   })
   this.value = result

lib/utils/develop.js

@@ -6,7 +6,7 @@ import ReactDOMServer from 'react-dom/server'
 import webpack from 'webpack'
 import Negotiator from 'negotiator'
 import parsePath from 'parse-filepath'
-import _ from 'underscore'
+import find from 'lodash/find'
 import webpackRequire from 'webpack-require'
 import fs from 'fs'
 import toml from 'toml'
@@ -102,7 +102,7 @@ module.exports = (program) => {
         } else {
           // Rewrite path to match disk path.
           const parsed = parsePath(request.path)
-          const page = _.find(pages, (p) => p.path === (`${parsed.dirname}/`))
+          const page = find(pages, (p) => p.path === (`${parsed.dirname}/`))
 
           if (page) {
             request.setUrl(`/${parsePath(page.requirePath).dirname}/${parsed.basename}`)

lib/utils/glob-pages.js

@@ -5,7 +5,7 @@ import slash from 'slash'
 import fs from 'fs'
 import frontMatter from 'front-matter'
 import htmlFrontMatter from 'html-frontmatter'
-import _ from 'underscore'
+import objectAssign from 'object-assign'
 const debug = require('debug')('gatsby:glob')
 
 module.exports = (directory, callback) => {
@@ -39,11 +39,11 @@ module.exports = (directory, callback) => {
       let data
       if (ext === 'md') {
         const rawData = frontMatter(fs.readFileSync(page, 'utf-8'))
-        data = _.extend({}, rawData.attributes)
+        data = objectAssign({}, rawData.attributes)
         pageData.data = data
       } else if (ext === 'html') {
         const html = fs.readFileSync(page, 'utf-8')
-        data = _.extend({}, htmlFrontMatter(html), { body: html })
+        data = objectAssign({}, htmlFrontMatter(html), { body: html })
         pageData.data = data
       } else {
         data = {}

package.json

@@ -67,7 +67,6 @@
     "toml": "^2.2.2",
     "toml-loader": "^1.0.0",
     "typography": "^0.7.0",
-    "underscore": "^1.8.3",
     "underscore.string": "^3.2.3",
     "webpack": "^1.12.13",
     "webpack-configurator": "^0.3.0",