Slow performance in hybrid AngularJS and Angular application in Safari
问题 I have started recently the migration of an AngularJS application to Angular 4 using the upgrade module. One of my AngularJS directives uses a third party library (ngFlow) to upload files using XMLHttpRequest.send() . When running in hybrid mode, uploads work fine both, in Chrome and in Firefox. However, in Safari the app becomes very slow during an upload and the browser process reaches 100% CPU used. Using Safari web tools, I see that there is a lot of calls to globalZoneAwareCallback from