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@rtorcato/browser-common / performance

performance

Functions​

isPerformanceApiAvailable()​

isPerformanceApiAvailable(): boolean

Defined in: performance/index.ts:9

Checks if the Performance API is available in the current environment.

Returns​

boolean

Example​

import { isPerformanceApiAvailable } from '@rtorcato/browser-common/performance'
if (isPerformanceApiAvailable()) trace()

now()​

now(): number

Defined in: performance/index.ts:23

Returns the current high-resolution timestamp (in milliseconds). Falls back to Date.now() if not available.

Returns​

number

Example​

import { now } from '@rtorcato/browser-common/performance'
const start = now()
const elapsed = now() - start

getPerformanceEntriesByType()​

getPerformanceEntriesByType(type): PerformanceEntry[]

Defined in: performance/index.ts:40

Gets all performance entries of a given type (e.g., 'resource', 'mark', 'measure').

Parameters​

type​

string

The entry type.

Returns​

PerformanceEntry[]

An array of PerformanceEntry objects, or an empty array if not supported.

Example​

import { getPerformanceEntriesByType } from '@rtorcato/browser-common/performance'
const resources = getPerformanceEntriesByType('resource')

mark()​

mark(name): void

Defined in: performance/index.ts:56

Marks a named timestamp in the performance timeline.

Parameters​

name​

string

The mark name.

Returns​

void

Example​

import { mark } from '@rtorcato/browser-common/performance'
mark('boot-start')

measure()​

measure(name, startMark, endMark): void

Defined in: performance/index.ts:74

Measures the time between two marks.

Parameters​

name​

string

The measure name.

startMark​

string

The starting mark name.

endMark​

string

The ending mark name.

Returns​

void

Example​

import { mark, measure } from '@rtorcato/browser-common/performance'
mark('start'); doWork(); mark('end')
measure('work', 'start', 'end')