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②ality – JavaScript and more

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Latest posts

Last updated 2 days ago

Demo: running TypeScript directly in Node.js

3 days ago

I have published the repository nodejs-type-stripping which demonstrates how to implement a...

The bottom type never in TypeScript

4 days ago

In this blog post, we look at the special TypeScript type never...

Array type notation: T[] vs. Array<T> in TypeScript

6 days ago

In this blog post, we explore two equivalent notations for Arrays in...

Symbols in TypeScript

6 days ago

In this blog post, we examine how TypeScript handles JavaScript symbols at...

Conditional types in TypeScript

8 days ago

In TypeScript, conditional types let us make decisions (think if-then-else expressions) –...

Mapped types in TypeScript

9 days ago

A mapped type is a loop over keys that produces an object...

TypeScript: extracting parts of composite types via infer

13 days ago

In this blog post, we explore how we can extract parts of...

TypeDoc: testing code examples in doc comments

14 days ago

TypeDoc now lets us refer to parts of other files via {@includeCode}...

TypeScript: the satisfies operator

15 days ago

TypeScript’s satisfies operator lets us check the type of a value (mostly)...

Read-only accessibility in TypeScript

17 days ago

In this blog post, we look at how can make things “read-only”...

Tutorial: publishing ESM-based npm packages with TypeScript

19 days ago

During the last two years, ESM support in TypeScript, Node.js and browsers...

Computing with tuples in TypeScript

25 days ago

JavaScript’s Arrays are so flexible that TypeScript provides two different kinds of...