fix: Empty anchors no longer crash the rendering process

package.json

@@ -66,7 +66,7 @@
     "highlight.js": "^9.11.0",
     "i18next": "^8.1.0",
     "i18next-express-middleware": "^1.0.5",
-    "i18next-node-fs-backend": "^0.1.3",
+    "i18next-node-fs-backend": "^1.0.0",
     "image-size": "^0.5.1",
     "jimp": "https://github.com/ngpixel/jimp.git",
     "js-yaml": "^3.8.3",
@@ -89,7 +89,7 @@
     "moment": "^2.18.1",
     "moment-timezone": "^0.5.13",
     "mongodb": "^2.2.26",
-    "mongoose": "^4.9.6",
+    "mongoose": "^4.9.7",
     "multer": "^1.3.0",
     "ora": "^1.2.0",
     "passport": "^0.3.2",
@@ -103,7 +103,7 @@
     "passport-windowslive": "^1.0.2",
     "passport.socketio": "^3.7.0",
     "pm2": "^2.4.6",
-    "pug": "^2.0.0-beta11",
+    "pug": "^2.0.0-rc.1",
     "read-chunk": "^2.0.0",
     "remove-markdown": "^0.1.0",
     "request": "^2.81.0",
@@ -149,7 +149,7 @@
     "standard": "latest",
     "twemoji-awesome": "^1.0.6",
     "uglify-js": "latest",
-    "vee-validate": "^2.0.0-beta.25",
+    "vee-validate": "^2.0.0-rc.2",
     "vue": "^2.3.0"
   },
   "standard": {

server/configure.js

@@ -102,7 +102,7 @@ module.exports = (port, spinner) => {
       },
       () => {
         const os = require('os')
-        if (os.totalmem() < 1024 * 1024 * 768) {
+        if (os.totalmem() < 1000 * 1000 * 768) {
           throw new Error('Not enough memory. Minimum is 768 MB.')
         }
         return _.round(os.totalmem() / (1024 * 1024)) + ' MB of system memory available. Minimum is 768 MB.'

server/libs/markdown.js

@@ -110,7 +110,7 @@ const parseTree = (content) => {
     if (heading.type === 'inline') {
       let content = ''
       let anchor = ''
-      if (heading.children && heading.children[0].type === 'link_open') {
+      if (heading.children && heading.children.length > 0 && heading.children[0].type === 'link_open') {
         content = heading.children[1].content
         anchor = _.kebabCase(content)
       } else {