browser-process-hrtime

What is browser-process-hrtime?

The browser-process-hrtime package is a browser shim for Node.js's process.hrtime. It allows you to get high-resolution real-time stamps with nanosecond precision, which is useful for performance testing, benchmarking, or tracking the time between events with high accuracy.

What are browser-process-hrtime's main functionalities?

High-resolution time stamps

This feature allows you to measure precise time intervals. The code sample demonstrates how to get the current high-resolution real-time stamp, wait for 1 second using setTimeout, and then get another time stamp to calculate the duration.

const now = require('browser-process-hrtime');
const start = now();
setTimeout(function () {
  const end = now(start);
  console.log('seconds:', end[0]);
  console.log('nanoseconds:', end[1]);
}, 1000);

Other packages similar to browser-process-hrtime

performance-now

This package provides a function that returns the current timestamp in milliseconds. It's similar to browser-process-hrtime but does not provide nanosecond precision.

hrtime

hrtime is another shim for process.hrtime. It offers similar functionality to browser-process-hrtime, providing high-resolution real-time stamps.

nano-time

nano-time gives you the current time in nanoseconds as a string. It's similar to browser-process-hrtime in that it provides high precision timing, but it does not use the same API as process.hrtime.

README

browser-process-hrtime

Browser shim for Node.js process.hrtime(). See documentation at nodejs.org

This module does not provide the same level of time precision as node.js, but provides a matching API and response format.

usage

Use hrtime independent of environment (node or browser). It will use process.hrtime first and fallback if not present.

const hrtime = require('browser-process-hrtime')
const start = hrtime()
// ...
const delta = hrtime(start)

monkey-patching

You can monkey-patch process.hrtime for your dependency graph like this:

process.hrtime = require('browser-process-hrtime')
const coolTool = require('module-that-uses-hrtime-somewhere-in-its-depths')

note

This was originally pull-requested against node-process, but they are trying to stay lean.