@charcuterie/biome-config

The shared Biome settings, extracted verbatim from mux-magic/biome.json — the reference app for every convention in this repo.

// biome.json, in any consumer
{
  "extends": ["@charcuterie/biome-config"],
  "files": { "includes": ["./**", "!**/dist"] }
}

The consumer owns files.includes, because which paths exist is a property of the app, not of the house style. Everything else — 60-column lines, two-space indent, LF, double quotes, semicolons as-needed, trailing commas everywhere, always-parenthesized arrow params — comes from here.

Why 60 columns. It is narrow enough that a function call with three arguments breaks one-per-line, which is the shape every diff in the fleet already has. Widening it later reflows every file in every repo at once, so it is set here and left alone.

Biome covers formatting and most linting. The rules it cannot express — the ones needing TypeScript type information or a custom AST query — live in @charcuterie/eslint-config.