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

usage

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

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

monkey-patching

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

process.hrtime = require('browser-process-hrtime')
var 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.