Bugsnag.start({ onError: function (event) { event.errors[0].stacktrace = event.errors[0].stacktrace.map(function (frame) { frame.file = frame.file.replace(/chrome-extension:/g, 'chrome_extension:') frame.file = frame.file.replace(/moz-extension:/g, 'moz_extension:') frame.file = frame.file.replace(/safari-extension:/g, 'safari_extension:') frame.file = frame.file.replace(/safari-web-extension:/g, 'safari_web_extension:') return frame }) } })