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performance

Timestamps, marks, and measures via the Performance API, with a Date.now() fallback.

Import: @rtorcato/browser-common/performance

📖 MDN: Performance API · 📊 caniuse: user-timing

Example

import { isPerformanceApiAvailable, now, mark, measure } from '@rtorcato/browser-common/performance'

if (isPerformanceApiAvailable()) {
  mark('boot-start')
  const start = now()
  doWork()
  mark('boot-end')
  measure('boot', 'boot-start', 'boot-end')
}

Exports

isPerformanceApiAvailable() — feature check
now() — high-resolution timestamp in ms, falls back to Date.now()
getPerformanceEntriesByType(type) — entries of a given type (e.g. 'resource', 'mark')
mark(name) — records a named timestamp
measure(name, startMark, endMark) — records the duration between two marks

See the API reference for full signatures.

Example
Exports