Uncaught ReferenceError: pe is not defined

After my latest deployment of my Meteor app, I’m getting this really strange error I’ve never seen before. Doesn’t even register in Google.

It’s this particular function that’s causing the issue:

function(ae, oe, se) {
                                var le, de;
                                !function(pe, ce) {
                                    "undefined" != typeof ae && ae.exports ? ae.exports = ce() : (le = ce,
                                    de = "function" == typeof le ? le.call(oe, se, oe, ae) : le,
                                    !(void 0 !== de && (ae.exports = de)))
                                }("bowser", function() {
                                    var ce = !0
                                      , ue = pe("undefined" == typeof navigator ? "" : navigator.userAgent);
                                    return ue.test = function(fe) {
                                        for (var me = 0, he; me < fe.length; ++me)
                                            if (he = fe[me],
                                            "string" == typeof he && he in ue)
                                                return !0;
                                        return !1
                                    }
                                    ,
                                    ue._detect = pe,
                                    ue
                                })
                            }

This only happens in production mode and I get no such errors in development mode. I’m completely lost here and would appreciate any help.