@perf-tools/performance

@perf-tools/performance
-----------------------
User Timing polyfill

``
npm i --save @perf-tools/performance
`

$3

`ts
// Polyfill
import from '@perf-tools/performance';

// As module
import { performance } from '@perf-tools/performance';
`

---

$3

- Browser, Worker and NodeJS
- API:
- now - Returns a DOMHighResTimeStamp representing the number of milliseconds elapsed since a reference instant.
- mark - Creates a timestamp in the browser's performance entry buffer with the given name.
- measure - Creates a named timestamp in the browser's performance entry buffer between two specified marks (known as the start mark and end mark, respectively).
- getEntries - Returns a list of PerformanceEntry objects based on the given filter.
- getEntriesByType - Returns a list of PerformanceEntry objects of the given entry type.
- getEntriesByName - Returns a list of PerformanceEntry objects based on the given name and entry type.
- clearMarks - Removes the given mark from the browser's performance entry buffer.
- clearMeasures - Removes the given measure from the browser's performance entry buffer.

---

#### Not Supported

- clearResourceTimings


---

$3

- npm i
- npm test`, code coverage