Pkg
Stats

npm package discovery and stats viewer.

Discover Tips

General search
[free text search, go nuts!]
Package details
pkg:[package-name]
User packages
@[username]

Sponsor

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.

Twitter
@PkgStats
GitHub
pkgstats
Twitter
@ryanhefner
GitHub
ryanhefner
Site
ryanhefner.com

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 🙏

Framework
react / react-dom
Server
next / express / next-routes
Data Store
redux / react-redux / next-redux-wrapper / redux-thunk / redux-logger
Caching
lru-cache
CSS / Styling
next-page-transitions / styled-components
Typeface
@ibm/plex
Avatars
gravatar
Data Viz
chart.js / react-sparklines
Date formatting
dayjs
Infinite scrolling
react-scroll-trigger
Markdown rendering
react-markdown
Repository url parsing
hosted-git-info
User data
npm-user
Compiling
babel-plugin-module-resolver / babel-plugin-styled-components
Types
prop-types
Odds & Ends
es6-promise / isomorphic-fetch

© 2024 – Pkg Stats / Ryan Hefner

@vitruvius-lab/ts-predicate

v2.4.0

Published

a year ago

TypeScript predicates library

Downloads

7

0High
0Medium
0Low

assert assertion guard predicate strict ts type type-guard typeguard typescript

ts-predicate

Philosophy

We want this lib to provide a strong foundation for your projects with tools that follow the strictest standards.

This lib is entirely dependency free on purpose to avoid bitter surprises.
All the provided functions are "pure": deterministic, stateless, and side-effect free.
The code is tested exhaustively for maximum coverage by unit tests and mutation tests.

Presentation

This lib is primarily about validating incoming data with the use of the isStructuredData() functions. These functions enforce complete validation of the data based on the expected type.

The type is the source of truth and the validation follow from the type, not the other way.

The lib also provide several functions to help both in building isStructuredData() descriptor and to discriminate types in your own code.

Because NaN is usually an undesirable value, this lib assimilate NaN to a nullish value along with undefined and null.

JSON.stringify() converts NaN into null.

Getting started

Choose your favourite package manager.

pnpm add @vitruvius-lab/ts-predicate

yarn add @vitruvius-lab/ts-predicate

npm install @vitruvius-lab/ts-predicate

Documentation