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

Two ways you can take advantage of types in JavaScript (without TypeScript)
Two ways you can take advantage of types in JavaScript (without TypeScript) - The Blinking Caret. This blog post describes how you can e...
blinkingcaret.com
/typescript/js
0 1085 0
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 1187 1
New
First poster: bot
Frontend>Blogs/Talks

Extent of safety properties in WebAssembly
WebAssembly has been one of the trendiest intermediate representations since a while. However, its definition of safety means preventing...
threedots.ovh
/wasm
0 1054 0
New
First poster: bot
Frontend>Blogs/Talks

Design your own Runtime
The Elm Architecture is one of the great innovations Elm brought to the software industry. But one of the questions that often comes up i...
gampleman.eu
/elm#design
0 1355 0
New
First poster: bot
Frontend>Blogs/Talks

User-defined type guards in TypeScript
Decided to write this blog post because I couldn’t find any documentation or online examples like the one I’m sharing here. Every example...
gcollazo.com
/typescript
0 1236 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 1462 0
New
First poster: bot
Frontend>Blogs/Talks

The Suspense is Killing Me: Part 1
If you are a long-time React user, you might be wondering for the past few years about when Concurrent Mode/Suspense will ship. The plans...
blog.6nok.org
/react
0 1172 0
New
First poster: rustkas
Frontend>Blogs/Talks

Tail-call optimization in Elm
What is TCO? Tail-call optimization (TCO) is a very neat trick that the Elm compiler does to make recursive functions a lot more performa...
jfmengels.net
/elm
22 2227 10
New
First poster: bot
Frontend>Blogs/Talks

Smoothly Reverting CSS Animations
Hey there, you probably tried to animate some HTML elements in your time using transitions, transforms, and animations in the CSS. I trie...
pragmaticpineapple.com
#css#animations
0 1066 0
New
mssantosdev
Frontend>Blogs/Talks

Creating a Frontend Style Guide with Phoenix Components
Our take on how to build a frontend style guide with Phoenix Components, Atomic Design and plain CSS, with focus on reusability and code ...
readyforproduction.dev
/elixir/phoenix#blog-post
2 929 0
New

Other popular topics Top

PragmaticBookshelf
General Dev>Learning Resources

The Pragmatic Programmer, 20th Anniversary Edition
Andy and Dave wrote this influential, classic book to help their clients create better software and rediscover the joy of coding. Almost ...
pragprog.com
#pragprog#published-book/book-the-pragmatic-programmer-20th-anniversary-edition
4 4782 0
New
PragmaticBookshelf
Game Dev>Learning Resources

Apple Game Frameworks and Technologies
Design and develop sophisticated 2D games that are as much fun to make as they are to play. From particle effects and pathfinding to soci...
pragprog.com
#pragprog#ios#game-dev#macos/swift#published-book#apple/book-apple-game-frameworks-and-technologies
30 7995 10
New
AstonJ
General Dev>Hardware

Custom keyboard keycaps
There’s a whole world of custom keycaps out there that I didn’t know existed! Check out all of our Keycaps threads here: https://forum....
#hardware/keyboards#keycaps#mechanical-keyboards
15 11086 19
New
AstonJ
General Dev>Hardware

Keyboard thock (sound)
I’ve been hearing quite a lot of comments relating to the sound of a keyboard, with one of the most desirable of these called ‘thock’, he...
/keyboards#mechanical-keyboards
14 11197 8
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 6600 9
New
AstonJ
Frontend>Chat

Online Hand to eye coordination test
Was just curious to see if any were around, found this one: I got 51/100: Not sure if it was meant to buy I am sure at times the b...
#online-tools
4 4562 1
New
Help
Game Dev>Questions

Can I use Java to program a game for Nintendo switch?
I am trying to crate a game for the Nintendo switch, I wanted to use Java as I am comfortable with that programming language. Can you use...
/java#nintendo
8 4771 3
New
PragmaticBookshelf
Community>In The Spotlight

Spotlight: Peter Ullrich (Author) Interview and AMA!
Author Spotlight: Peter Ullrich @PJUllrich Data is at the core of every business, but it is useless if nobody can access and analyze ...
/elixir/phoenix/book-building-table-views-with-phoenix-liveview
72 4765 21
New
PragmaticBookshelf
Backend>Learning Resources

Kotlin Coroutine Confidence
Escape callback hell and ship fast, clean code that reads as smoothly as it runs. Squash bugs and stamp out memory leaks with an intuitiv...
pragprog.com
#pragprog/java/kotlin#published-book/book-kotlin-coroutine-confidence
14 3688 10
New
PragmaticBookshelf
General Dev>Learning Resources

Write Better with Vale
Lint your docs like code: turn any style guide into enforceable rules with Vale and publish clear, consistent content every time. ...
pragprog.com
#pragprog#published-book#vale/book-write-better-with-vale
8 9973 5
New
Back to top

Sponsor Spotlight

EEF

Supporting innovation across the BEAM ecosystem.

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