fox-send/frontend/src/common.js

const Raven = require('raven-js');
const { unsupported } = require('./metrics');

if (navigator.doNotTrack !== '1' && window.RAVEN_CONFIG) {
  Raven.config(window.SENTRY_ID, window.RAVEN_CONFIG).install();
}

const ua = navigator.userAgent.toLowerCase();
if (
  ua.indexOf('firefox') > -1 &&
  parseInt(ua.match(/firefox\/*([^\n\r]*)\./)[1], 10) <= 49
) {
  unsupported({
    err: new Error('Firefox is outdated.')
  }).then(() => {
    location.replace('/unsupported/outdated');
  });
}

module.exports = {
  Raven
};