Since Google announced the Chromium project in 2008, we have been excited to build on the great foundations of open-source web browsers an...

Traditionally, we could only apply regular expression flags such as i (for ignoring case) to all of a regular expression. The ECMAScript feature “Regular Expression Pattern Modifiers” (by Ron Buckton) enables us to apply them to only part of a regular expression.…

I never felt confident about my tsconfig.json. To change that, I went through the official documentation, collected all common options, and documented them in this blog post: This knowledge will enable you to write a tsconfig.json that is cleaner and that…

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.