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
2 964 0

Where Next?

View thread on forum
typescript
guide
type
Home Frontend>Blogs/Talks
/typescript#guide#type
2 964 0
Last post

Popular Frontend topics Top

First poster: bot
Frontend>Blogs/Talks

How I write Elm applications
How I Write Elm Applications. This is the homepage of Jezen Thomas — programmer, and founder of NewBusinessMonitor and Comparestack. Top...
jezenthomas.com
/elm
0 833 1
New
First poster: bot
Frontend>Blogs/Talks

A beginner's guide to developing with React
A beginner’s guide to developing with React. React is a JavaScript user interface (UI) library that was built and is maintained by Faceb...
opensource.com
/react#beginner#guide
0 885 1
New
First poster: bot
Frontend>Blogs/Talks

Sugar – a typed lispy language targeting webasm/wat
ph1lter.bitbucket.io
/wasm#sugar
0 844 0
New
First poster: bot
Frontend>Blogs/Talks

Stork Turns One: Building a search tool for static sites with Rust and WebAssembly
Stork Turns One: Building a search tool for static sites with Rust and WebAssembly • jameslittle.me. Stork, my web search side project, ...
jameslittle.me
/rust/wasm
0 835 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 1006 0
New
First poster: bot
Frontend>Blogs/Talks

HTML over the wire (2020)
You can write fast, modern, responsive web applications by generating your HTML on the server, and delivering that (with a little help) d...
m.signalvnoise.com
/ruby/rails/html
0 1124 0
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 1133 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
3 814 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
2 833 0
New
First poster: bot
Frontend>Blogs/Talks

Pure CSS device fingerprinting
CSS Fingerprinting is a technique of tracking and gathering information on site visitors. This method exploits the nature of CSS to track...
csstracking.dev
#css
0 773 0
New

Other popular topics Top

AstonJ
General Dev>Dev Chat

Best chairs for developers?
What chair do you have while working… and why? Is there a ‘best’ type of chair or working position for developers?
#workspace#opinions
74 4868 41
New
Exadra37
Linux>Questions

AMD or Intel for Programming with Linux as the OS?
I am thinking in building or buy a desktop computer for programing, both professionally and on my free time, and my choice of OS is Linux...
#mobile#android#web-development#linux#desktop-computer#mobile-development
36 5418 10
New
AstonJ
General Dev>Code Editors

Poll: Which code editor do you use?
You might be thinking we should just ask who’s not using VSCode :joy: however there are some new additions in the space that might give V...
#geany
114 4788 58
New
DevotionGeo
General Dev>Code Editors

Dendron: a personal knowledge management tool on top of VSCode
/vscode#visual-studio-code
28 6014 9
New
Exadra37
Linux>Chat

RancherOS is in end of life
Oh just spent so much time on this to discover now that RancherOS is in end of life but Rancher is refusing to mark the Github repo as su...
#linux#rancheros
10 5238 6
New
AstonJ
Backend>Chat

Rails console using 100% CPU in dev (fix)
If you are experiencing Rails console using 100% CPU on your dev machine, then updating your development and test gems might fix the issu...
/ruby/rails
3 3663 3
New
Maartz
General Dev>Dev Chat

Roc Language - a new purely functional programming language built for speed and ergonomics
Hi folks, I don’t know if I saw this here but, here’s a new programming language, called Roc Reminds me a bit of Elm and thus Haskell. ...
#programminguages#functional-programming
49 4442 14
New
PragmaticBookshelf
Community>In The Spotlight

Spotlight: Dmitry Zinoviev (Author) Interview and AMA!
Author Spotlight Dmitry Zinoviev @aqsaqal Today we’re putting our spotlight on Dmitry Zinoviev, author of Data Science Essentials in ...
#author-spotlight/python/book-complex-network-analysis-in-python/book-data-science-essentials-in-python/book-resourceful-code-reuse/book-pythonic-programming
33 4790 14
New
PragmaticBookshelf
Community>In The Spotlight

Spotlight: David Bryant Copeland (Author) Interview and AMA!
Author Spotlight: David Bryant Copeland @davetron5000 We’re so happy to bring you another Author Spotlight, a series where we sit dow...
#author-spotlight/book-agile-web-development-with-rails-6/book-rails-angular-postgres-and-bootstrap-second-edition/book-sustainable-web-development-with-ruby-on-rails
19 3447 15
New
CommunityNews
General Dev>In The News

X can’t stop spread of explicit, fake AI Taylor Swift images
Will Swifties’ war on AI fakes spark a deepfake porn reckoning?
arstechnica.com
/swift
0 5943 0
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'll 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'll 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