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2ality – JavaScript and more
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Latest posts
Last updated about 19 hours ago
TypeScript: checking Map keys and Array indices
1 day ago
JavaScript has two common patterns Maps: We check the existence of a...
TypeScript: supporting the new class Iterator at the type level
5 days ago
In ECMAScript 2025, JavaScript gets a class Iterator with iterator helper methods...
Styling console text in Node.js
about 1 month ago
In this blog post, we explore how we can style text that...
Converting values to strings in JavaScript
about 2 months ago
Converting values to strings in JavaScript is more complicated than it might...
Deploying TypeScript: recent advances and possible future directions
2 months ago
In this blog post we look at The current best practice for...
Ideas for making TypeScript better at testing types
2 months ago
In this blog post, we examine how we can test types in...
Could JavaScript have synchronous await?
3 months ago
In JavaScript, code has color: It is either synchronous or asynchronous. In...
The TypeScript compiler is being ported to Go and gets 10 times faster
3 months ago
Today’s announcement by Microsoft [...] we’ve begun work on a native port...
Unions and intersections of object types in TypeScript
4 months ago
In this blog post, we explore what unions and intersections of object...
My sales pitch for TypeScript
4 months ago
Roughly, TypeScript is JavaScript plus type information. The latter is removed before...
What is TypeScript? An overview for JavaScript programmers
4 months ago
Read this blog post if you are a JavaScript programmer and want...
Simple TypeScript playground via node --watch
4 months ago
Now that Node.js has built-in support for TypeScript, we can use it...