precise-now

Like performance.now() but in nanoseconds.

Although the value is always in nanoseconds, the time resolution might be less precise. For example, in Node.js, it is 1ns, but in Firefox it is 1ms and in Chrome it is 0.1ms.

Example

import preciseNow from 'precise-now'

const start = preciseNow()
const end = preciseNow()
const duration = end - start

Install

npm install precise-now

This package works in both Node.js >=18.18.0 and browsers.

This is an ES module. It must be loaded using an import or import() statement, not require(). If TypeScript is used, it must be configured to output ES modules, not CommonJS.

API

preciseNow()

Return value: number

Return the number of nanoseconds since the time origin.

Related projects

• time-resolution: Find the system's time resolution

Support

For any question, don't hesitate to submit an issue on GitHub.

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Contributing

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