Warn users about outdated versions of Greasemonkey.

package.json

@@ -13,7 +13,12 @@
       "*://boards.4chan.org/*",
       "*://images.4chan.org/*",
       "*://sys.4chan.org/*"
-    ]
+    ],
+    "min": {
+      "chrome": "29",
+      "firefox": "22",
+      "greasemonkey": "1.12"
+    }
   },
   "devDependencies": {
     "font-awesome": "https://github.com/FortAwesome/Font-Awesome/archive/v4.0.0.tar.gz",

src/General/Main.coffee

@@ -195,6 +195,15 @@ Main =
       Main.disableReports = true
       alert '4chan X v2 detected: Disable it or v3 will break.'
 
+    <% if (type === 'userscript') { %>
+    GMver = GM_info.version.split '.'
+    for v, i in "<%= meta.min.greasemonkey %>".split '.'
+      break if v < GMver[i]
+      continue if v is GMver[i]
+      new Notice 'warning', "Your version of Greasemonkey is outdated (v#{GM_info.version} instead of v<%= meta.min.greasemonkey %> minimum) and <%= meta.name %> may not operate correctly.", 30
+      break
+    <% } %>
+
     try
       localStorage.getItem '4chan-settings'
     catch err

src/Meta/manifest.json

@@ -15,7 +15,7 @@
     "run_at": "document_start"
   }],
   "homepage_url": "<%= meta.page %>",
-  "minimum_chrome_version": "29",
+  "minimum_chrome_version": "<%= meta.min.chrome %>",
   "permissions": [
     "storage"
   ]

src/Meta/metadata.js

@@ -1,8 +1,8 @@
 // ==UserScript==
 // @name         <%= meta.name %>
 // @version      <%= version %>
-// @minGMVer     1.13
+// @minGMVer     <%= meta.min.greasemonkey %>
-// @minFFVer     22
+// @minFFVer     <%= meta.min.firefox %>
 // @namespace    <%= name %>
 // @description  <%= description %>
 // @license      MIT; <%= meta.repo %>blob/<%= meta.mainBranch %>/LICENSE