In this blog post, we take a closer look at TypeScript enums: How do they work? What are their use cases? What are the alternatives if we don’t want to use them? The blog post concludes with recommendations for what to use when.

The ECMAScript proposal “RegExp escaping” (by Jordan Harband and Kevin Gibbons) specifies a function RegExp.escape() that, given a string text, creates an escaped version that matches text – if interpreted as a regular expression. This proposal reached stage…

In this blog post, we take a closer look at template literal types in TypeScript: While their syntax is similar to JavaScript’s template literals, they operate at the type level. Their use cases include: Static syntax checking for string literals Transforming…

Discover the features that became Baseline Newly available through Interop 2024.

2024 年就这样过去了。上半年发生的一系列事情对我仿佛一场梦一样，而下半年我才回到真实的生活中。

JavaScript’s Arrays are so flexible that TypeScript provides two different kinds of types for handling them: Array types for arbitrary-length sequences of values that all have the same type – e.g.: Array<string> Tuple types for fixed-length sequences of values…

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 take a look at what’s new in TypeScript 5.8! Checked Returns…

Discover some of the interesting features that have landed in stable and beta web browsers during January 2025.

和大部分人使用浏览器书签或者导航类网站索引自己的常用网站不同，我强烈依赖基于浏览器地址栏自动补全来访问我常用的网站。那么，将 A-Z 逐一输入到 Google Chrome 的地址栏里，我的 Google Chrome 都会自动补全出哪些域名呢？

During the last two years, ESM support in TypeScript, Node.js and browsers has made a lot of progress. In this blog post, I explain my modern setup that is relatively simple – compared to what we had to do in the past:

CSS scrollbar-gutter and scrollbar-width have landed in all major browser engines, making it Baseline Newly available.

Ruby on Rails' famous blog in 15 minutes now runs right in your browser thanks to WebAssembly.

In its first edition, this Baseline monthly digest covers happenings in Baseline at both Google and the web developer community in January 2025.

In this blog post, we look at how can make things “read-only” in TypeScript – mainly via the keyword readonly.

随着 Deepseek R1 模型的出现，之前我对大语言模型的诸多论断全都被推翻了。比如先前我在「当患有 ADHD 的工程师坐上了名为人工智能的四驱赛博轮椅」这篇文章提到的开发范式，已经出现了大幅的松动。
原本我在向大语言模型提出开发需求时还需要剪裁自己手里的代码，把问题的核心全都一一挖出来陈列好，交给模型处理。可是现在只需要把所有跟业务逻辑有关的几页代码全都粘在一起，模型就能自己参考有关的实现，完成必要的开发工作。在使用 Rust 这类相对复杂的语言时，模型也能做到基本不出错，出错只需要简单修正一两次，就可以产出高度可用的成果。…

TypeScript’s satisfies operator lets us check the type of a value (mostly) without influencing it. In this blog post, we examine how exactly it works and where it’s useful.

TypeDoc now lets us refer to parts of other files via {@includeCode}. In this blog post, I explain how that works and why it’s useful.