cross-event-loop-lag

Measures event loop lag on browsers or node.

Just a fork of event-loop-lag but works on both nodejs environment and browsers.

Install

$ npm i cross-event-loop-lag

Usage

import {factory} from 'cross-event-loop-lag'

const interval = 50
const lag = factory(interval)

someHeavyMethod()
lag()  // 500, get the lag measurement

factory(interval: number)

• interval number The number of milliseconds representing how often to refresh the event loop lag measurement.

Creates a function lag which can be invoked to return the latest lag measurement in ms. Besides, we can use lag.destroy() to stop the measuring and destroy the timer inside.

After lag.destroy()ed, lag() will always return 0

// Destroy the timer and stop measuring
lag.destroy()

lag() // 0
lag() // 0

License

MIT