Integrating Sentry for JS error tracking

src/js/main.js

@@ -11,20 +11,6 @@ import Parser from './parser/javascript.js';
 import _ from 'lodash';
 
 (function() {
-  // Global error handler that will send unhandled JavaScript exceptions and
-  // stack-traces to Google Analytics. This data can be used to find errors in
-  // code that were not found during testing.
-  window.addEventListener('error', function(error) {
-    if (error.lineno !== 0) {
-      util.track('send', 'event', 'global', 'exception',
-        `${error.filename}(${error.lineno},${error.colno}): ${error.message}`);
-
-      if (typeof error.error !== 'undefined' && typeof error.error.stack !== 'undefined') {
-        util.track('send', 'event', 'global', 'stack trace', error.error.stack);
-      }
-    }
-  });
-
   // Initialize the main page of the site. Functionality is kept in the
   // [Regexper class](./regexper.html).
   if (document.body.querySelector('#content .application')) {