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@tinkoff/browser-timings
Advanced tools
Readme
Lib for measure client browsers performance. Automatically collects performance data on page load.
Install npm package
npm i --save @tinkoff/browser-timings
import { browserTimings } from '@tinkoff/browser-timings';
window.addEventListener('load', () => {
setTimeout(() => {
// setTimeout is necessary in order to get metrics about loadEventEnd
const perfData = browserTimings();
}, 0);
});
After executing perfData
will contain client performance metrics which may be send to any external system for further analysis.
Call of the library should be executed only after page load in order to get actual data. Otherwise, it may return empty object without data.
export interface Timings {
/* Connection timing from client to server */
connection: number;
/* How much time backend was preparing response */
backend: number;
/* Page download to client */
pageDownload: number;
/* Timing of first paint for a page */
'first-paint': number;
/* Timing when DOM becomes interactive */
domInteractive: number;
/* DOM building is complete */
domComplete: number;
/* Page and every resource were loaded */
pageLoadTime: number;
/* Common information about resources and its loading time grouped by type */
download: {
html: TimingResource;
js: TimingResource;
css: TimingResource;
img: TimingResource;
font: TimingResource;
other: TimingResource;
};
}
interface TimingResource {
/* Timing of resource loading */
duration: number;
/* Byte-size measure of data used by resource */
encodedDecodeSize: number;
/* Byte-size measure of data transferred by network. Calculating difference between encodedDecodeSize - transferSize may reveal how much data where stored in browser cache */
transferSize: number;
}
FAQs
Lightweighted browser timings metrics exporter
The npm package @tinkoff/browser-timings receives a total of 447 weekly downloads. As such, @tinkoff/browser-timings popularity was classified as not popular.
We found that @tinkoff/browser-timings demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 17 open source maintainers collaborating on the project.
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