Angular digest performance logging

angular_digest_performance.ts

    let oldDigest = GlobalServices.rootScope.$digest;
    GlobalServices.rootScope.$digest = function () {
        let stack = (<any>Error()).stack;
        let t = new Date().getTime();
        oldDigest.call(this);
        t = new Date().getTime() - t;
        if (t > 250) {
            console.log(`$digest: ${t} ms`)
            console.log(stack);
        }
    };