Frontend>Blogs/Talks

A complete guide to TypeScript’s never type

CommunityNews

CommunityNews

A complete guide to TypeScript’s never type

TypeScript’s never type is very under-discussed, because it’s not nearly as ubiquitous or inescapable as other types. A TypeScript beginner can probably ignore never type as it only appears when dealing with advanced types, such as conditional types, or reading their cryptic type error messages.

The never type does have quite a few good use cases in TypeScript. However, it also has its own pitfalls you need to be careful of.

In this blog post, I will cover:

  • The meaning of never type and why we need it.
  • Practical applications and pitfalls of never.
  • a lot of puns :rofl:

Read in full here:

This thread was posted by one of our members via one of our news source trackers.

View thread on forum
/typescript#guide#type
2 1074 0

Where Next?

View thread on forum
typescript
guide
type
Home Frontend>Blogs/Talks
/typescript#guide#type
2 1074 0
Last post

Popular Frontend topics Top

First poster: bot
Frontend>Blogs/Talks

Writing Robust TypeScript Libraries
Writing Robust TypeScript Libraries — Sympolymathesy, by Chris Krycho. When writing a TypeScript library, it’s helpful to validate all t...
v5.chriskrycho.com
/typescript
0 845 0
New
First poster: bot
Frontend>Blogs/Talks

A Model for Reasoning About JavaScript Promises (2017)
In JavaScript programs, asynchrony arises in situations such as web-based user-interfaces, communicating with servers through HTTP reques...
franktip.org
/js
0 1173 0
New
First poster: AstonJ
Frontend>Blogs/Talks

An Interactive Guide to CSS Transitions
The world of web animations has become a sprawling jungle of tools and technologies. Libraries like GSAP and Framer Motion and React Spri...
joshwcomeau.com
#css#guide
3 925 3
New
First poster: bot
Frontend>Blogs/Talks

WebAssembly Search Tools for Static Sites
The challenge of searching static websites is effectively a solved problem with brilliant, yet widely unadopted, solutions. These projec...
healeycodes.com
/wasm
0 962 0
New
First poster: dimitarvp
Frontend>Blogs/Talks

The future of web software is HTML over WebSockets
The future of web-based software architectures is already taking form, and this time it’s server-rendered (again). Papa’s got a brand new...
alistapart.com
/elixir/phoenix#web/html#websockets
14 1815 3
New
First poster: bot
Frontend>Blogs/Talks

Comparing Svelte and React
Last year I created Pomodone, a small time tracking application based on the Pomodoro technique of working in 25 minute intervals. It’s a...
jackfranklin.co.uk
/react/svelte
0 1312 0
New
First poster: bot
Frontend>Blogs/Talks

The new responsive: Web design in a component-driven world
User-preference based media features, container queries, and media queries for new screen types, such as foldable screens, will enable us...
web.dev
#design#web
2 882 0
New
First poster: bot
Frontend>Blogs/Talks

Everyone Has JavaScript, Right?
View in full here: https://kryogenix.org/code/browser/everyonehasjs.html This thread was posted by one of our members via one of our ne...
kryogenix.org
/js
2 964 0
New
StuntProgrammer
Frontend>Blogs/Talks

Retry XMLHttpRequest Carefully
It’s rare to see a web app that doesn’t use XMLHttpRequest (or fetch, the new API with comparable capability). XMLHttpRequest (which we c...
lofi.limo
#blog-post
5 1025 0
New
First poster: bot
Frontend>Blogs/Talks

An SPA alternative
Recently Tom MacWright has written a few posts on Single Page Applications and their discontents: Second-guessing the modern web If not...
htmx.org
#spa
0 948 0
New

Other popular topics Top

PragmaticBookshelf
General Dev>Learning Resources

A Common-Sense Guide to Data Structures and Algorithms, Second Edition
Algorithms and data structures are much more than abstract concepts. Mastering them enables you to write code that runs faster and more e...
pragprog.com
#pragprog/python/ruby#published-book/book-a-common-sense-guide-to-data-structures-and-algorithms-second-edition#math#algorithms/js
19 4751 5
New
AstonJ
Science/Tech>Tech Chat

What are you watching?
Or looking forward to? :nerd_face:
#community
483 11078 254
New
Exadra37
General Dev>Hardware

What monitor(s) do you have for programming?
Please tell us what is your preferred monitor setup for programming(not gaming) and why you have chosen it. Does your monitor have eye p...
#monitors#coding#programming#development
227 10159 88
New
AstonJ
General Dev>Dev Chat

Which language or framework do you want to learn next?
Curious to know which languages and frameworks you’re all thinking about learning next :upside_down_face: Perhaps if there’s enough peop...
#community#learning
243 6219 95
New
Rainer
Community>Journals

Programming Erlang Book Club
My first contact with Erlang was about 2 years ago when I used RabbitMQ, which is written in Erlang, for my job. This made me curious and...
/erlang/book-programming-erlang-2nd-edition#book-club
195 6634 95
New
AstonJ
General Dev>Dev Chat

How fast do you type? Check your WPM here!
Do the test and post your score :nerd_face: :keyboard: If possible, please add info such as the keyboard you’re using, the layout (Qw...
typing-speed-test.aoeu.eu
/keyboards
82 7310 31
New
dimitarvp
macOS>Chat

My thoughts on macOS vs Linux
Small essay with thoughts on macOS vs. Linux: I know @Exadra37 is just waiting around the corner to scream at me “I TOLD YOU SO!!!” but I...
#macos#linux
166 8678 69
New
PragmaticBookshelf
Backend>Learning Resources

Agile Web Development with Rails 7
Rails 7 completely redefines what it means to produce fantastic user experiences and provides a way to achieve all the benefits of single...
pragprog.com
#pragprog#web-development/ruby/rails#published-book/book-agile-web-development-with-rails-7
32 5327 9
New
PragmaticBookshelf
Community>In The Spotlight

Spotlight: Bruce Tate (Author) Interview and AMA!
Author Spotlight: Bruce Tate @redrapids Programming languages always emerge out of need, and if that’s not always true, they’re defin...
/elixir/ruby/phoenix/book-seven-more-languages-in-seven-weeks/book-seven-languages-in-seven-weeks#liveview/book-programming-phoenix-liveview
54 4972 23
New
AstonJ
AI>Chat

Post your DeepSeek results
Curious what kind of results others are getting, I think actually prefer the 7B model to the 32B model, not only is it faster but the qua...
/deepseek
15 2909 15
New
Back to top

Sponsor Spotlight

Erlang Solutions

We build trusted fault-tolerant systems that scale to billions of users.

Latest in TypeScript

TypeScript Portal ❯

Frontend>Blogs/Talks

Frontend Blogs/Talks ❯

Latest on Devtalk

Devtalk ❯

We ❤️ helpful members!

We reward our most helpful members via our MOTM scheme - by giving away a whopping 25 books per year!

Member of the Month

Devtalk Sponsors

Pragmatic Bookshelf

Practical resources that improve the lives of professional developers.

Erlang Solutions

We build trusted fault-tolerant systems that scale to billions of users.

Honeybadger

Real-time error tracking, performance insights, and observability for devs.

Manning Publications

Develop your skills with books, videos, and courses.

AppSignal

Catch errors, track performance, monitor hosts and more.

WyeWorks

Enabling companies to succeed by building software people love.

Pragmatic Studio

Courses that move you from confusion to "Aha, now I get it!"

View all our sponsors ❯

Categories:

Sub Categories:

Popular Portals

Devtalk Sponsors

Pragmatic Bookshelf

Practical resources that improve the lives of professional developers.

Erlang Solutions

We build trusted fault-tolerant systems that scale to billions of users.

Honeybadger

Real-time error tracking, performance insights, and observability for devs.

Manning Publications

Develop your skills with books, videos, and courses.

AppSignal

Catch errors, track performance, monitor hosts and more.

WyeWorks

Enabling companies to succeed by building software people love.

Pragmatic Studio

Courses that move you from confusion to "Aha, now I get it!"

View all our sponsors ❯

We're in Beta

About us Mission Statement See our Roadmap