JS Self-Profiling API In Practice
Nic Jansma (@nicj) is a software developer at Akamai building high-performance websites, apps and open-source tools. Table of Contents The JS Self-Profiling API What is Sampled Profiling? Downsides to Sampled Profiling API Document Policy API Shape Sample Interval Buffer Who to Profile When to Profile Specific Operations User Interactions Page Load Overhead Anatomy of a Profile Beaconing Size Comp
Reconstructing TypeScript, part 0: intro and background
Jake Donham > Technical Difficulties > Reconstructing TypeScript, part 0 Reconstructing TypeScript, part 0: intro and background2021-09-07I've been building a "document development environment" called Programmable Matter that supports live code embedded in documents, with a simple TypeScript-like programming language. It's been fun figuring out how to implement it—the type system in TypeScript is
Advanced TypeScript: A Type Safe Store for Vue 3
Like my content? Sign up to get occasional emails about new blog posts and other content. EmailSubmit Unsubscribe anytime here.Writing A Type Safe Store In this article we explore some advanced TypeScript while building a type safe store with a similar API to Pinia or Vuex 5 (which is still in the RFC stage). I learned a lot of what was needed to write this article by reading the Pinia source code
TypeScript without TypeScript -- JSDoc superpowers
Published on July 16, 2019 Stefan on Mastodon Reading time: 10 minutes More on TypeScript One way to think about TypeScript is as a thin layer around JavaScript that adds type annotations. Type annotations that make sure you don’t make any mistakes. The TypeScript team worked hard on making sure that type checking also works with regular JavaScript files. TypeScript’s compiler (tsc) as well as lan
Dynamic Static Typing In TypeScript — Smashing Magazine
In this article, we look at some of the more advanced features of TypeScript, like union types, conditional types, template literal types, and generics. We want to formalize the most dynamic JavaScript behavior in a way that we can catch most bugs before they happen. We apply several learnings from all chapters of TypeScript in 50 Lessons, a book we’ve published here on Smashing Magazine late 2020
`undefined` vs. `null` revisited
Many programming languages have one “non-value” called null. It indicates that a variable does not currently point to an object – for example, when it hasn’t been initialized yet. In contrast, JavaScript has two such non-values: undefined and null. In this blog post, we examine how they differ and how to best use or avoid them. undefined vs. null # Both values are very similar and often used inte
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