Index

What this publication covers

The five subjects JS Ledger writes about, and what each one means here.

01
Language internals
ECMAScript semantics and TypeScript’s type system, read from the specification and the compiler rather than from the documentation.
3 articles
02
Runtime and performance
V8’s optimization pipeline, the event loop, memory, and the measurement methodology that keeps a performance claim from being folklore.
3 articles
03
Ecosystem and production
npm, the software supply chain, Node and its neighbors, and the behavior that only appears once the code is running somewhere you do not control.
- The Provenance Was Valid. The Commit Was Not.
- Reading a Lockfile: Supply Chain in Practice
2 articles
04
Frameworks
Reactivity models, rendering strategies, and the machinery underneath the frameworks — the parts that are the same across all of them, and the parts that are not.
- Your Reactive Graph Computed 4,11. That State Never Existed.
- Signals Are Not Magic: The Dependency Graph Underneath
2 articles
05
Tooling and build
Bundlers, dev servers, transpilers and module resolution: what happens to your source between the moment you save it and the moment a browser runs it.
- Vite 8 Ships One Bundler, Not One Pipeline
- What Actually Happens When Vite Serves a Module
2 articles

Language internals