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 1178 0

Where Next?

View thread on forum
typescript
guide
type
Home Frontend>Blogs/Talks
/typescript#guide#type
2 1178 0
Last post

Popular Frontend topics Top

First poster: bot
Frontend>Blogs/Talks

The Zen of index.html
The Zen of index.html. Web development has become a very complex field with many branches and tools to master. In this article, I sugges...
hugodaniel.com
/html
0 1332 0
New
First poster: bot
Frontend>Blogs/Talks

Ashley Williams Discusses the Future of WebAssembly at the WebAssembly Summit
Ashley Williams Discusses the Future of WebAssembly at the WebAssembly Summit . Williams commented on the results of a Twitter poll sh...
infoq.com
/wasm
0 1045 0
New
First poster: bot
Frontend>Blogs/Talks

State of JavaScript 2020
As crappy as 2020 was, JavaScript as a whole still managed to somehow move forward. As the language itself keeps improving thanks to new ...
2020.stateofjs.com
/js
0 1303 0
New
First poster: bot
Frontend>Blogs/Talks

Why Become a TypeScript Fan?
In this article, I will discuss my journey from being an anti-TypeScript developer to a developer who now couldn’t think of going back to...
betterprogramming.pub
/typescript
0 1534 0
New
First poster: claudio
Frontend>Blogs/Talks

Why I don't like Tailwind CSS
You’re at a restaurant, and there’s an odd item on the menu that you’ve never heard of before, but it piques your interest. It sounds lik...
aleksandrhovhannisyan.com
#css/tailwind
39 2378 12
New
First poster: bot
Frontend>Blogs/Talks

Choosing a language to replace Javascript (and why it's F#)
Choosing a language to replace Javascript (and why it’s F#). This is an opinion piece. YMMV Once in a while, I start a side project who...
theor.xyz
#f-sharp/js
0 1333 0
New
First poster: bot
Frontend>Blogs/Talks

Is WebAssembly magic performance pixie dust?
Add WebAssembly, get performance. Is that how it really works? The incredibly unsatisfying answer is: It depends. It depends on oh-so-ma...
surma.dev
#performance/wasm/assemblyscript
0 1267 0
New
First poster: bot
Frontend>Blogs/Talks

Modern Javascript: Everything you missed over the last 10 years (2020)
JavaScript has come a long way since I knew it as the “D” in DHTML. For anyone like me, who’s been reluctant to use the latest syntax tha...
turriate.com
/js
1 1046 0
New
First poster: bot
Frontend>Blogs/Talks

Rust on the Frontend and Backend
Backend languages in the browser have been a thing for a long time. Google Web Toolkit would compile Java applications into JavaScript, a...
blog.abor.dev
/rust#frontend#backend
3 1019 0
New
sorentwo
Frontend>Blogs/Talks

Unlocking Agentic Workflows with Oban
A new article showcasing some of Oban, and Oban Pro’s, distinct agentic workflow abilities.
getoban.pro
/elixir#blog-post#oban#oban-pro
3 734 1
New

Other popular topics Top

PragmaticBookshelf
Backend>Learning Resources

Programming Machine Learning
Machine learning can be intimidating, with its reliance on math and algorithms that most programmers don't encounter in their regular wor...
pragprog.com
#pragprog#ai/python#published-book/book-programming-machine-learning#math#algorithms
6 5350 3
New
PragmaticBookshelf
Game Dev>Learning Resources

The Ray Tracer Challenge
Brace yourself for a fun challenge: build a photorealistic 3D renderer from scratch! In just a couple of weeks, build a ray tracer that r...
pragprog.com
#pragprog#published-book/book-the-ray-tracer-challenge#algorithms
3 6115 0
New
DevotionGeo
Backend>Questions

Can someone explain the -t option/flag in docker run command?
I know that -t flag is used along with -i flag for getting an interactive shell. But I cannot digest what the man page for docker run com...
#docker
7 10261 2
New
AstonJ
Backend>Chat

How to install Ruby 3 with ASDF
In case anyone else is wondering why Ruby 3 doesn’t show when you do asdf list-all ruby :man_facepalming: do this first: asdf plugin-upd...
/ruby#asdf
11 5961 4
New
PragmaticBookshelf
Backend>Learning Resources

Python Testing with pytest, Second Edition
Create efficient, elegant software tests in pytest, Python's most powerful testing framework. Brian Okken @brianokken Edited by Kat...
pragprog.com
#pragprog/python#published-book/book-python-testing-with-pytest-second-edition
16 7461 4
New
foxtrottwist
General Dev>Dev Chat

Warp—The blazingly fast, Rust-based terminal
A few weeks ago I started using Warp a terminal written in rust. Though in it’s current state of development there are a few caveats (tab...
/rust#terminal
52 6785 22
New
AstonJ
General Dev>Code Editors

Doom-Emacs: Can't find emacs in your PATH
If you get Can't find emacs in your PATH when trying to install Doom Emacs on your Mac you… just… need to install Emacs first! :lol: bre...
#macos/emacs#doom-emacs
4 5837 0
New
PragmaticBookshelf
Community>In The Spotlight

Spotlight: Jamis Buck (Author) Interview and AMA!
Author Spotlight Jamis Buck @jamis This month, we have the pleasure of spotlighting author Jamis Buck, who has written Mazes for Prog...
#author-spotlight/ruby/book-the-ray-tracer-challenge/book-mazes-for-programmers
21 6352 9
New
PragmaticBookshelf
Backend>Learning Resources

Programming Ruby 3.2 (5th Edition)
Programming Ruby is the most complete book on Ruby, covering both the language itself and the standard library as well as commonly used t...
twitter.com
#pragprog/ruby/rails#published-book/book-programming-ruby-3-2-5th-edition
28 8550 13
New
PragmaticBookshelf
Backend>Learning Resources

Machine Learning in Elixir
Leverage Elixir and the Nx ecosystem to build intelligent applications that solve real-world problems in computer vision, natural languag...
pragprog.com
#pragprog/elixir#published-book#machine-learning#nx/book-machine-learning-in-elixir
18 4615 7
New
Back to top

Sponsor Spotlight

Manning

Develop your skills with books, videos, and courses.

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.

EEF

Supporting innovation across the BEAM ecosystem.

coders51

We build reliable cloud platforms for business-critical systems.

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!"

Linux New Media

Publishing Linux Magazine, ADMIN, and MakerSpace for 25+ years.

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.

EEF

Supporting innovation across the BEAM ecosystem.

coders51

We build reliable cloud platforms for business-critical systems.

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!"

Linux New Media

Publishing Linux Magazine, ADMIN, and MakerSpace for 25+ years.

View all our sponsors ❯

We're in Beta

About us Mission Statement See our Roadmap