@fastly/performance-observer-polyfill (npm): <h1 align="center" style="border-bottom: none;">🔎 PerformanceObserver Polyfill</h1> <p align="center">   <a href="https://travis-ci.org/fastly/performance-observer-polyfill">     <img alt="Travis" src="https://img.shields.io/travis/fastly/performance-obs
Keywords: performance|performanceobserver|polyfill