◆ Building coldpath · Part 1
Tracing When This Blog's JavaScript Actually Runs
Chuseok side quest, part 1: starting with my own blog
03 POSTS
Rust 1
The Real Cost of Drop-in Compatibility: What I Threw Away Porting markdownlint-cli2 to Rust
I ported markdownlint-cli2 to Rust and matched 264,114 diagnostics on this blog repository byte for byte. The commits that ported 51 rules landed in a single day, but turning that into a tool you could actually swap in took two weeks. A record of giving up a parser 37 times faster, correcting two performance misreadings, and finding 11 more compatibility differences in an adversarial review.
Bun rewrite Exposed Something: OSS Could Only Stop External AI
Bun moved roughly 960,000 lines from Zig to Rust in six days using Claude Code. The meaning here is not code quality but OSS governance and resource asymmetry.