const reportWebVitals = onPerfEntry => {if (onPerfEntry && onPerfEntry instanceof Function) {import('web-vitals').then(({ getCLS, getFID, getFCP, getLCP, getTTFB }) => {getCLS(onPerfEntry);getFID(onPerfEntry);getFCP(onPerfEntry);getLCP(onPerfEntry);getTTFB(onPerfEntry);});}};export default reportWebVitals;