add crash handler hijack

shared.js

@@ -73,8 +73,43 @@
     // post-init payload
     document.addEventListener('ep-ready', () => {
 
+        // hijack the crash handler
+        // TODO: make this less ugly
+        $api.util.findFuncExports('CRASH', 'prototype').prototype.render = function () {
+
+            console.error('*** DISCORD CRASH!!! ***\nLOCKING DISPATCH AND HIJACKING PAGE');
+
+            // disable dispatch(), essentially freezing react
+            $api.internal.dispatcher.default.dispatch = () => { };
+
+            // clear css
+            $("link[rel='stylesheet']").remove();
+            $$("style").forEach(x => x.remove());
+
+            // add a simple style to the body
+            $('body').style.color = '#fff';
+            $('body').style.backgroundColor = '#000082';
+            $('body').style.fontFamily = 'monospace';
+
+            // write our message to app-mount
+            $('#app-mount').innerHTML = `<h1>EndPwn: Discord Fatal Error</h1>
+<h3>
+Something has gone very, very wrong, and Discord has crashed.<br><br>
+If this is the first time you've seen this error screen, press Ctrl+R and hope for the best. If this screen appears again, follow these steps:<br><br>
+Try removing any new plugins and restarting again. If this solves the problem there may be a bug in the plugin.<br><br>
+If problems continue, it's likely that there is a bug in EndPwn or Discord. <a href="https://discord.gg/wXdPNf2" target="_blank" style="color:#0ff">Join the EndPwn Discord server</a> for assistance.<br><br>
+Details may be available in the console (Ctrl+Shift+I), but at this level of crash we can't be certain.
+</h3>
+<button onclick="electron.getCurrentWindow().reload()">Reload</button>
+<button onclick="$api.localStorage.set('safemode',1);electron.getCurrentWindow().reload()">Reload in safe mode</button>`;
+
+            // crash whatever was calling render()
+            throw 'render abort';
+
+        }
+
         // disable analytics
-        $api.util.findFuncExports("AnalyticEventConfigs").default.track = () => {};
+        $api.util.findFuncExports("AnalyticEventConfigs").default.track = () => { };
 
         // enable experiments
         $api.util.findFuncExports('isDeveloper').__defineGetter__('isDeveloper', () => true);