npm package discovery and stats viewer.

Discover Tips

  • General search

    [free text search, go nuts!]

  • Package details

    pkg:[package-name]

  • User packages

    @[username]

Sponsor

Optimize Toolset

I’ve always been into building performant and accessible sites, but lately I’ve been taking it extremely seriously. So much so that I’ve been building a tool to help me optimize and monitor the sites that I build to make sure that I’m making an attempt to offer the best experience to those who visit them. If you’re into performant, accessible and SEO friendly sites, you might like it too! You can check it out at Optimize Toolset.

About

Hi, 👋, I’m Ryan Hefner  and I built this site for me, and you! The goal of this site was to provide an easy way for me to check the stats on my npm packages, both for prioritizing issues and updates, and to give me a little kick in the pants to keep up on stuff.

As I was building it, I realized that I was actually using the tool to build the tool, and figured I might as well put this out there and hopefully others will find it to be a fast and useful way to search and browse npm packages as I have.

If you’re interested in other things I’m working on, follow me on Twitter or check out the open source projects I’ve been publishing on GitHub.

I am also working on a Twitter bot for this site to tweet the most popular, newest, random packages from npm. Please follow that account now and it will start sending out packages soon–ish.

Open Software & Tools

This site wouldn’t be possible without the immense generosity and tireless efforts from the people who make contributions to the world and share their work via open source initiatives. Thank you 🙏

© 2024 – Pkg Stats / Ryan Hefner

depicts-whole-number

v1.0.8

Published

Test a variable to see if it represents a whole number.

Downloads

187

Readme

depicts-whole-number

Test a variable to see if it represents a whole number.[1]

Build Status Test Coverage Code Climate

Dependency Status devDependencies Status

Standard - JavaScript Style Guide

Installation

$ npm install depicts-whole-number

Usage

const depictsWholeNumber = require('depicts-whole-number')

depictsWholeNumber(0) // true
depictsWholeNumber(123) // true
depictsWholeNumber(-123) // false
depictsWholeNumber(1.23) // false
depictsWholeNumber(1e+21) // false
depictsWholeNumber(Number.MAX_VALUE) // false
depictsWholeNumber(Infinity) // false

depictsWholeNumber('0') // true
depictsWholeNumber('123') // true
depictsWholeNumber('-123') // false
depictsWholeNumber('1.23') // false
depictsWholeNumber('1e3') // false
depictsWholeNumber('1e+3') // false
depictsWholeNumber('0123') // false
depictsWholeNumber('123s45') // false

depictsWholeNumber('') // false
depictsWholeNumber(null) // false
depictsWholeNumber(undefined) // false
depictsWholeNumber(NaN) // false

Take a look into the test folder for more examples.

Note: The following numbers are not whole numbers, but identical up to an isomorphism:[2]

  • 1e+3 (scientific notation) ~ 1000
  • 1000.00 (natural number with a fraction) ~ 1000

Only Safe Numbers

When using this option, true is only returned for whole numbers being less or equal than Number.MAX_SAFE_INTEGER.
Visit developer.mozilla.org for further reference.

const depictsWholeNumber = require('depicts-whole-number').onlySafeNumbers

depictsWholeNumber(Number.MAX_SAFE_INTEGER) // true
depictsWholeNumber(Number.MAX_SAFE_INTEGER + 1) // false

depictsWholeNumber('9007199254740991') // true
depictsWholeNumber('9007199254740992') // false

License

ISC

[1] Whole numbers are natural numbers (including zero) written in decimal notation without a decimal fraction.
[2] Isomorphism: Sameness between two different structures.