TypeScript

Any JavaScript is valid TypeScript - JavaScript that scales.

TypeScript Logo

TypeScript lets you write JavaScript the way you really want to

Any browser. Any host. Any OS

TypeScript is a typed superset of JavaScript that compiles to plain JavaScript.

Any JavaScript is valid TypeScript.

Open Source - TypeScript is being developed on GitHub. The TypeScript compiler is implemented in TypeScript, and can be used in any JavaScript host.

The command-line TypeScript compiler can be installed as a Node.js package.

To Install just run npm install -g typescript

Then to Compile just run tsc helloworld.ts

DefinitelyTyped - The repository for high quality TypeScript type definitions

TypeScript offers support for the latest and evolving JavaScript features, including those from ECMAScript 2015 (ECMAScript 6, ES6, often referred to as "Harmony") which is the sixth major release of the ECMAScript language specification and future proposals, like async functions and decorators, to help build robust components.

These features are available at development time for high-confidence app development, but are compiled into simple JavaScript that targets ECMAScript 3 (or newer) environments.

JavaScript has been standardised in the ECMAScript language specification (Standard ECMA-262) which means ECMAScript is the "proper" name for the language commonly referred to as JavaScript.

The Sixth Edition, known as ES6 or ECMAScript 2015 was released on the . Then in the Seventh Edition was released, known as ECMAScript 2016 or sometimes ES2016 or ES7.

Our JavaScript page has more information on the current ECMAScript language specification.

The TypeScript team has some great documentation but be sure to check out the tutorials section for a run down on working with TypeScript and

TypeScript compiles to clean, simple JavaScript code which runs on any browser, in Node.js, or in any JavaScript engine that supports ECMAScript 3 (or newer).

Working with TypeScript

We do most of our TypeScript work within Visual Studio Code and have found it to be a great working enviroment for day to day work.

The Visual Studio Code team have a good guide to getting up and running with TypeScript.

Along with documentation for Editing and Refactoring TypeScript in VS Code.

Node.js Running TypeScript Natively

Since V22.6.0, Node.js has Experimental support for some TypeScript syntax.

Node.js has a Introduction to TypeScript within its learn section.

TypeScript Version 5.7

22 November 2024 - Announcing TypeScript 5.7 - Blog Post with the changes and set up details.

8 November 2024 - Announcing TypeScript 5.7 RC - Blog Post with the changes and set up details.

9 October 2024 - Announcing TypeScript 5.7 Beta - Blog Post with the changes and set up details.

TypeScript Version 5.6

9 September 2024 - Announcing TypeScript 5.6 - Blog Post with the changes and set up details.

23 August 2024 - Announcing TypeScript 5.6 RC - Blog Post with the changes and set up details.

26 July 2024 - Announcing TypeScript 5.6 Beta - Blog Post with the changes and set up details.

TypeScript Version 5.5

20 June 2024 - Announcing TypeScript 5.5 - Blog Post with the changes and set up details.

6 June 2024 - Announcing TypeScript 5.5 RC - Blog Post with the changes and set up details.

25 April 2024 - Announcing TypeScript 5.5 Beta - Blog Post with the changes and set up details.

TypeScript Version 5.4

6 March 2024 - Announcing TypeScript 5.4 - Blog Post with the changes and set up details.

22 February 2024 - Announcing TypeScript 5.4 RC - Blog Post with the changes and set up details.

29 January 2024 - Announcing TypeScript 5.4 Beta - Blog Post with the changes and set up details.

TypeScript Version 5.3

20 November 2023 - Announcing TypeScript 5.3 - Blog Post with the changes and set up details.

3 November 2023 - Announcing TypeScript 5.3 RC - Blog Post with the changes and set up details.

3 October 2023 - Announcing TypeScript 5.3 Beta - Blog Post with the changes and set up details.

TypeScript Version 5.2

24 August 2023 - Announcing TypeScript 5.2 - Blog Post with the changes and set up details.

9 August 2023 - Announcing TypeScript 5.2 RC - Blog Post with the changes and set up details.

30 June 2023 - Announcing TypeScript 5.2 Beta - Blog Post with the changes and set up details.

TypeScript Version 5.1

1 June 2023 - Announcing TypeScript 5.1 - Blog Post with the changes and set up details.

18 May 2023 - Announcing TypeScript 5.1 RC - Blog Post with the changes and set up details.

18 April 2023 - Announcing TypeScript 5.1 Beta - Blog Post with the changes and set up details.

TypeScript Version 5.0

16 March 2023 - Announcing TypeScript 5.0 - Blog Post with the changes and set up details.

1 March 2023 - Announcing TypeScript 5.0 RC - Blog Post with the changes and set up details.

26 January 2023 - Announcing TypeScript 5.0 Beta - Blog Post with the changes and set up details.

Matt Pocock covers the release in a video TypeScript 5.0 BETA IS HERE

TypeScript Version 4.9

15 November 2022 - Announcing TypeScript 4.9 - Blog Post with the changes and set up details.

1 November 2022 - Announcing TypeScript 4.9 RC - Blog Post with the changes and set up details.

23 September 2022 - Announcing TypeScript 4.9 Beta - Blog Post with the changes and set up details.

TypeScript Version 4.8

25 August 2022 - Announcing TypeScript 4.8 - Announcing TypeScript 4.8 Blog Post.

11 August 2022 - Announcing TypeScript 4.8 RC - Announcing TypeScript 4.8 RC Blog Post.

21 June 2022 - Announcing TypeScript 4.8 Beta - Blog Post with the changes and set up details.

TypeScript Version 4.7

24 May 2022 - Announcing TypeScript 4.7 - Blog Post with set up details.

11 May 2022 - Announcing TypeScript 4.7 RC - Blog Post with set up details.

8 April 2022 - Announcing TypeScript 4.7 Beta - Blog Post with set up details.

TypeScript Version 4.6

28 February 2022 - Announcing TypeScript 4.6 - Blog Post Announcing TypeScript 4.6

11 February 2022 - Announcing TypeScript 4.6 RC - Blog Post with set up details.

21 January 2022 - Announcing TypeScript 4.6 Beta - Blog Post with set up details.

TypeScript Version 4.5

17 November 2021 - Announcing TypeScript 4.5 - Blog Post with set up details.

2 November 2021 - Announcing TypeScript 4.5 RC - Blog Post with set up details.

1 October 2021 - Announcing TypeScript 4.5 Beta - Blog Post with set up details.

TypeScript Version 4.4

26 August 2021 - Announcing TypeScript 4.4 - Blog Post with set up details.

12 August 2021 - Announcing TypeScript 4.4 RC - Blog Post with set up details.

1 July 2021 - Announcing TypeScript 4.4 Beta - Blog Post with set up details.

TypeScript Version 4.3

26 May 2021 - Announcing TypeScript 4.3 - Blog Post with set up details.

12 May 2021 - Announcing TypeScript 4.3 RC - Blog Post with set up details.

1 April 2021 - Announcing TypeScript 4.3 Beta - Blog Post with set up details.

TypeScript Version 4.2

23 February 2021 - Announcing TypeScript 4.2 - Blog Post with set up details.

11 February 2021 - Announcing TypeScript 4.2 RC - Blog Post with set up details.

12 January 2021 - Announcing TypeScript 4.2 Beta - Blog Post with set up details.

TypeScript Version 4.1

19 November 2020 - Announcing TypeScript 4.1 - Blog Post with set up details.

3 November 2020 - Announcing TypeScript 4.1 RC - Blog Post with set up details.

20 August 2020 - Announcing TypeScript 4.0 - Blog Post with set up details.

TypeScript Version 3

TypeScript 3.0 was released on 30 July 2018. This blog post Announcing TypeScript 3.0 covers whats new and the journey to v3.

Visual Studio Code 1.27 now ships with TypeScript version 3.0.3

TypeScript Version 3.1 RC

13 September - Announcing TypeScript 3.1 RC - Blog Post with set up details.

TypeScript Version 2

So the 11th of July saw the Announcement of the TypeScript 2.0 Beta and updates for tooling with regards to Visual Studio 2015 (Announcing TypeScript 2.0 Beta).

The What's new in TypeScript page on the TypeScript Wiki provides great coverage as to whats new in version 2, be sure to take a read.

TypeScript Links

A Proposal For Type Syntax in JavaScript

Online Editors that support TypeScript

What is GitHub.dev ?

Press . on any repo to make quick edits powered by Visual Studio Code.

This is a great way to read or make changes to code on GitHub.

This differs from Codespaces as it does not have any compute behind it, so you dont get to use the terminal or to Run & Debug your code.

You can also just change the url from .com to .dev to launch the Editor. For more information take a read of the doc's page.

This service is available today free for all GitHub users.

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