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typescriptlang.org
TypeScript
@typescriptlang.org
9.1K followers 0 following 29 posts
TypeScript is JavaScript with types and type-checking. Compiles down to JavaScript, runs where JavaScript runs.
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typescriptlang.org
TypeScript @typescriptlang.org · Mar 11
Today we're thrilled to announce our effort to port the TypeScript compiler and language service to native code, gaining a 10x speed boost in build times and editor responsiveness!

devblogs.microsoft.com/typescript/t...
A 10x Faster TypeScript - TypeScript
Embarking on a native port of the existing TypeScript compiler and toolset to achieve a 10x performance speed-up.
devblogs.microsoft.com
22 290 980
typescriptlang.org
TypeScript @typescriptlang.org · Aug 1
TypeScript 5.9 is now available! 📣

This release brings:

✅ An updated tsc --init
✅ Type-checking for the new 'import defer'
✅ Actual summaries in more DOM APIs
✅ Expandable quick info hovers (✨preview✨)

and more! Read up more on our blog:

devblogs.microsoft.com/typescript/a...
Announcing TypeScript 5.9 - TypeScript
Today we are excited to announce the release of TypeScript 5.9! If you’re not familiar with TypeScript, it’s a language that builds on JavaScript by adding syntax for types. With types, TypeScript mak...
devblogs.microsoft.com
27 150
typescriptlang.org
TypeScript @typescriptlang.org · Jul 25
TypeScript 5.9 RC is available to try! Let us know how it works before next week's stable release!

devblogs.microsoft.com/typescript/a...
Announcing TypeScript 5.9 RC - TypeScript
Today we are excited to announce the Release Candidate (RC) of TypeScript 5.9! To get started using the Release Candidate, you can get it through npm with the following command: npm install -D typescr...
devblogs.microsoft.com
4 14 110
typescriptlang.org
TypeScript @typescriptlang.org · Jul 8
TypeScript 5.9 Beta just went out! Try it in your project and let us know what you think:

devblogs.microsoft.com/typescript/a...
Announcing TypeScript 5.9 Beta - TypeScript
Today we are excited to announce the availability of TypeScript 5.9 Beta. To get started using the beta, you can get it through npm with the following command: npm install -D typescript@beta Let’s tak...
devblogs.microsoft.com
2 22 96
Reposted by TypeScript
slack.engineering
Slack Engineering @slack.engineering · Jun 19
Slack now runs the new Go-powered @typescriptlang.org checker in CI. Using the tool saves us over 5 minutes per run, meaning faster merges and happier developers.

Huge thanks to Anders, @jakebailey.dev, and everyone else on the project for the incredible performance gains.
developer.microsoft.com
Microsoft Developer @developer.microsoft.com · Mar 20
ICYMI: TypeScript is now 10x faster!
2 19 140
typescriptlang.org
TypeScript @typescriptlang.org · May 22
Today we're announcing previews of the native port of TypeScript! These nightly previews will be available on npm and the VS Code marketplace!

npm install -D @​typescript/native-preview
npx tsgo --version

Read up more on our blog!
Announcing TypeScript Native Previews - TypeScript
Previews of the native TypeScript port are now available on npm and for VS Code through the Visual Studio Marketplace!
devblogs.microsoft.com
10 93 400
Reposted by TypeScript
jakebailey.dev
Jake Bailey @jakebailey.dev · Apr 6
Finally reviving my blog! Wrote a few thousand words about one of the most notorious bugs we encountered when porting tsc to Go: accidental variable shadowing.

It's a pleasure to write go/analysis passes, and I was really happy with the results of my shadow analyzer.

Please enjoy the CFG diagrams!
Detecting dubious shadowing in Go
The most common porting bug in the TypeScript Go port
jakebailey.dev
4 9 64
typescriptlang.org
TypeScript @typescriptlang.org · Mar 13
Starting soon! 📢

We've got a TypeScript AMA starting in just a few minutes (10am Pacific) on the TypeScript Discord!

discord.gg/typescript
Join the TypeScript Community Discord Server!
The official community for TypeScript. Active help channels, type experts and more. Join now! | 49993 members
discord.gg
3 6 55
Reposted by TypeScript
syntax.fm
Syntax @syntax.fm · Mar 11
🚨 Announcing the new @typescriptlang.org compiler: native and 10× Faster and written in @golang.org
1 17 90
typescriptlang.org
TypeScript @typescriptlang.org · Mar 11
Watch Anders Hejlsberg demo the incredible progress so far! www.youtube.com/watch?v=pNlq...
A 10x faster TypeScript
YouTube video by Microsoft Developer
www.youtube.com
1 10 70
typescriptlang.org
TypeScript @typescriptlang.org · Mar 11
Today we're thrilled to announce our effort to port the TypeScript compiler and language service to native code, gaining a 10x speed boost in build times and editor responsiveness!

devblogs.microsoft.com/typescript/t...
A 10x Faster TypeScript - TypeScript
Embarking on a native port of the existing TypeScript compiler and toolset to achieve a 10x performance speed-up.
devblogs.microsoft.com
22 290 980
typescriptlang.org
TypeScript @typescriptlang.org · Feb 28
TypeScript 5.8 is now out, with

✅ Better Checks on return expressions
✅ Support for require(esm) in --module nodenext
✅ --libReplacement to speed up program loading
✅ --erasableSyntaxOnly

and more! Try it today!

devblogs.microsoft.com/typescript/a...
Announcing TypeScript 5.8 - TypeScript
Today we’re excited to announce the release of TypeScript 5.8! If you’re not familiar with TypeScript, it’s a language that builds on top of JavaScript by adding syntax for types. Writing types in our...
devblogs.microsoft.com
2 40 240
typescriptlang.org
TypeScript @typescriptlang.org · Feb 13
The release candidate (RC) for TypeScript 5.8 is now published! Read up more on our release notes and try it today!

devblogs.microsoft.com/typescript/a...
Announcing TypeScript 5.8 RC - TypeScript
Today we are excited to announce the Release Candidate (RC) of TypeScript 5.8! To get started using the Release Candidate, you can get it through npm with the following command: npm install -D typescr...
devblogs.microsoft.com
1 17 89
typescriptlang.org
TypeScript @typescriptlang.org · Jan 29
We just released the beta for TypeScript 5.8! This release brings support for Node.js' require(ESM), smarter/safer checks for functions using advanced types, a few great optimizations for editor scenarios, and more. Give it a try!

devblogs.microsoft.com/typescript/a...
Announcing TypeScript 5.8 Beta - TypeScript
Today we are excited to announce the availability of TypeScript 5.8 Beta. To get started using the beta, you can get it through npm with the following command: npm install -D typescript@beta Let’s tak...
devblogs.microsoft.com
6 35 150
typescriptlang.org
TypeScript @typescriptlang.org · Nov 22
📢 TypeScript 5.7 is here! Now with

✅ Better checks for uninitialized variables
✅ Smarter tsconfig lookup in editors
✅ Improved startup time
✅ Stricter checks for JSON imports
✅ Extension rewrites for relative imports

and more! Try it today!

devblogs.microsoft.com/typescript/a...
Announcing TypeScript 5.7 - TypeScript
Today we excited to announce the availability of TypeScript 5.7! If you’re not familiar with TypeScript, it’s a language that builds on JavaScript by adding syntax for type declarations and annotation...
devblogs.microsoft.com
3 96 360
typescriptlang.org
TypeScript @typescriptlang.org · Nov 8
We just published the release candidate of TypeScript 5.7! Give it a shot and let us know what you think!

devblogs.microsoft.com/typescript/a...
Announcing TypeScript 5.7 RC - TypeScript
Today we are announcing the availability of the release candidate of TypeScript 5.7. To get started using the RC, you can get it through npm with the following command: npm install -D typescript@rc Le...
devblogs.microsoft.com
31 210
typescriptlang.org
TypeScript @typescriptlang.org · Oct 9
TypeScript 5.7 beta is now available to try! Read up on what's new today! devblogs.microsoft.com/typescript/a...
Announcing TypeScript 5.7 Beta - TypeScript
Today we are announcing the availability of TypeScript 5.7 Beta. To get started using the beta, you can get it through npm with the following command: npm install -D typescript@beta Let’s take a look ...
devblogs.microsoft.com
7 52
typescriptlang.org
TypeScript @typescriptlang.org · Sep 9
🚀TypeScript 5.6 is now available! 🚀

Now with

✅ New syntactic nullish/truthy checks
✅ Iterator helper methods & strictness checks
✅ Region-prioritized checking in editors
✅ Flexible --build behavior

and more! Try it today!
devblogs.microsoft.com/typescript/a...
Announcing TypeScript 5.6 - TypeScript
Today we’re excited to announce the release of TypeScript 5.6! If you’re not familiar with TypeScript, it’s a language that builds on top of JavaScript by adding syntax for types. Types describe the s...
devblogs.microsoft.com
8 57
typescriptlang.org
TypeScript @typescriptlang.org · Aug 23
The release candidate for TypeScript 5.6 is now available for testing! Give it a try today for more new checks, ways to speed-up your builds, new JS features, and more!

devblogs.microsoft.com/typescript/a...
Announcing TypeScript 5.6 RC - TypeScript
Today we are excited to announce the availability of the release candidate of TypeScript 5.6. To get started using the RC, you can get it through npm with the following command: npm install -D typescr...
devblogs.microsoft.com
1 4 36
typescriptlang.org
TypeScript @typescriptlang.org · Jul 26
TypeScript 5.6 Beta is now out with

✔️ Errors on Suspicious Truthy/Nullish Checks
✔️ Iterator Methods like `.map()` and `.filter()`
✔️ Error-Tolerant --build Mode
✔️ --noCheck
✔️ Type-Checking Prioritized by Editor Viewports

and more! Try it today!

devblogs.microsoft.com/typescript/a...
Announcing TypeScript 5.6 Beta - TypeScript
Today we are excited to announce the availability of TypeScript 5.6 Beta. To get started using the beta, you can get it through NuGet, or through npm with the following command: npm install -D typescr...
devblogs.microsoft.com
9 24
typescriptlang.org
TypeScript @typescriptlang.org · Jun 20
TypeScript 5.5 is now available! 🎉✨

Now with

✅ Inferred Type Predicates
✅ RegEx syntax checks
✅ The JSDoc @‍import Tag
✅ ${configDir} for easier tsconfig inheritance
✅ --isolatedDeclarations
✅ Lots of new optimizations

And more! Try it today!

devblogs.microsoft.com/typescript/a...
Announcing TypeScript 5.5 - TypeScript
Today we’re excited to announce the release of TypeScript 5.5! If you’re not familiar with TypeScript, it’s a language that builds on top of JavaScript by making it possible to declare and describe ty...
devblogs.microsoft.com
7 21
typescriptlang.org
TypeScript @typescriptlang.org · Jun 6
TypeScript 5.5 RC is now out to try! We're looking for feedback on inferred type predicates, JSDoc imports, regex checking, ${configDir}, isolatedDeclarations, build optimizations, and more!

devblogs.microsoft.com/typescript/a...
Announcing TypeScript 5.5 RC - TypeScript
Today we are excited to announce the availability of the release candidate of TypeScript 5.5. To get started using the RC, you can get it through NuGet, or through npm with the following command: npm ...
devblogs.microsoft.com
5 15
typescriptlang.org
TypeScript @typescriptlang.org · Apr 25
Announcing TypeScript 5.5 Beta! 📣

Now with type predicate inference, more type narrowing, an @‍import tag for JSDoc, the --isolatedDeclarations flag, performance & reliability improvements, and much more!
Announcing TypeScript 5.5 Beta - TypeScript
Today we are excited to announce the availability of TypeScript 5.5 Beta. To get started using the beta, you can get it through NuGet, or through npm with the following command: npm install -D typescr...
devblogs.microsoft.com
1 16 44
typescriptlang.org
TypeScript @typescriptlang.org · Feb 22
The release candidate of TypeScript 5.4 is now ready to download!

Read up on what's coming in TypeScript 5.4 👀
Announcing TypeScript 5.4 RC - TypeScript
Today we’re excited to announce our Release Candidate of TypeScript 5.4! Between now and the stable release of TypeScript 5.4, we expect no further changes apart from critical bug fixes. To get starte...
devblogs.microsoft.com
5 16
typescriptlang.org
TypeScript @typescriptlang.org · Jan 29
TypeScript 5.4 Beta is available to try! This release has lots of type narrowing improvements, the 'NoInfer' type helper, groupBy, better options for bundlers, and more!

devblogs.microsoft.com/typescript/a...
Announcing TypeScript 5.4 Beta - TypeScript
Today we are excited to announce the availability of TypeScript 5.4 Beta. To get started using the beta, you can get it through NuGet, or through npm with the following command: npm install -D typescr...
devblogs.microsoft.com
6 10
typescriptlang.org
TypeScript @typescriptlang.org · Nov 20
Today we released TypeScript 5.3! Now bringing:

- new narrowing improvements
- more correctness checks
- import attributes
- handy new editor features
- lots of optimizations

and lots more! So try it today!

devblogs.microsoft.com/typescript/a...
Announcing TypeScript 5.3 - TypeScript
Today we’re excited to announce the release of TypeScript 5.3! If you’re not familiar with TypeScript, it’s a language that adds type syntax to JavaScript to bring type-checking. Type-checking c...
devblogs.microsoft.com
3 16