Series

Feopack

Notes from learning Rspack by building a small Rust bundler.

1

Feopack: From a JavaScript API to a Rust Compiler

2026-05-03

Why Feopack began at the JavaScript boundary, how NAPI connected it to Rust, and what had to exist before the bundler could build its first module graph.
2

Feopack: From Source Files to a Working Bundle

2026-05-04

How Feopack grew from an empty Compilation into a module graph, one deliberately simple chunk, and a tiny runtime that could preserve basic ESM behavior.
3

Feopack: From Text Files to Virtual Modules

2026-09-02

How Feopack's first text transform grew into a loader pipeline with rules, chained transforms, resource queries, virtual modules, and inline requests.
4

Feopack: Loader Pitch Across Rust and JavaScript

2026-09-02

How Feopack added pitch, replaced noisy inline recipes with Meow v3, crossed the Rust/JavaScript boundary, and preserved one loader chain across two runtimes.
5

Feopack: Turning the Compiler Lifecycle into a Plugin System

2026-09-05

How Feopack exposed its compiler lifecycle to Rust and JavaScript plugins, then removed an abstraction that confused phases with hooks.