uxm (npm): A modular front-end performance library to collect User eXperience Metrics (UXM).
Keywords: web performance|user experience|user-centric metrics|first paint|first contentful paint|largest contentful paint|first input delay|cumulative layout shift|paint timing api|user timing api|network information api|chrome user experience report|crux|network connection|device memory|real-user-monitoring|user-centric-metrics|user-experience|web-performance