_fbq.push.toSting()

gistfile1.txt

/*
* _fbq used for facebook custom audience
* Array.push overriden
*/
function (t) {
    if (Object.prototype.toString.call(t) !== '[object Array]') return false;
    var u = t.shift();
    if (!u) return false;
    var v = f[u];
    if (typeof v !== 'function') return false;
    if (a._fbds) {
        var w = a._fbds.pixelId;
        if (h.test(w)) {
            g.push(w);
            delete a._fbds.pixelId;
        }
    }
    return v.apply(f, t);
}