Update bot user agent list

Author: GarboMuffin

src/spider.js

@@ -2,6 +2,34 @@ const isSpider = (userAgent) => {
     if (typeof userAgent !== 'string') {
         return false;
     }
+
+    // This list in in large based on https://github.com/monperrus/crawler-user-agents/blob/master/crawler-user-agents.json
+    // which is under this license:
+    // The MIT License (MIT)
+    // Copyright (c) 2017 Martin Monperrus
+    //
+    // Permission is hereby granted, free of charge, to any person obtaining a copy of
+    // this software and associated documentation files (the "Software"), to deal in
+    // the Software without restriction, including without limitation the rights to
+    // use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+    // the Software, and to permit persons to whom the Software is furnished to do so,
+    // subject to the following conditions:
+    //
+    // The above copyright notice and this permission notice shall be included in all
+    // copies or substantial portions of the Software.
+    //
+    // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+    // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+    // FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+    // COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+    // IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+    // CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+    //
+    // There are some differences though; this list is much smaller because we only want to include
+    // crawlers where the extra open graph tags we put in will actually be useful to end users.
+    // So we want things like search engines, social media, and chat apps generating link previews,
+    // but don't need to waste time handling AI bots slurping up the entire internet, we have no
+    // useful data for them anyways.
     return (
         userAgent.includes('Googlebot') ||
         userAgent.includes('Discordbot') ||
@@ -20,7 +48,17 @@ const isSpider = (userAgent) => {
         userAgent.includes('DuckDuckBot') ||
         userAgent.includes('facebookexternalhit') ||
         userAgent.includes('Applebot') ||
-        userAgent.includes('MojeekBot')
+        userAgent.includes('MojeekBot') ||
+        userAgent.includes('Bluesky') ||
+        userAgent.includes('Skype') ||
+        userAgent.includes('Pinterest') ||
+        userAgent.includes('search.marginalia.nu') ||
+        userAgent.includes('Valve/Steam') ||
+        userAgent.includes('Iframely') ||
+        userAgent.includes('opengraph') ||
+        userAgent.includes('OpenGraph') ||
+        userAgent.includes('GroupMeBot') ||
+        userAgent.includes('KeybaseBot')
     );
 };