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@houserules/plugin-typescript

v0.1.2

Published

houserules plugin: a path-scoped TypeScript rule covering the type-system decisions that have a right answer.

Downloads

553

Vulnerabilities

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Links

Git

Maintainers

dtcurriedtcurrie

Keywords

houseruleshouserules-plugintypescriptclaude-code

Readme

@houserules/plugin-typescript

npm

An agent writing TypeScript reaches for any the moment data arrives from outside the program, and picks between interface and type by whichever it saw last. Neither choice fails a build, so neither gets caught in review until the codebase has both conventions and no reason for either.

This plugin ships the small set of type-system decisions that have a right answer, as a rule the agent loads only when it has a TypeScript file open.

Install

pnpm add -D @houserules/plugin-typescript
pnpm exec houserules init

Requires @houserules/cli. init is what writes the module into .claude/. This module is off by default, so select it when init asks.

Modules

  • typescript installs .claude/rules/typescript.md, a path-scoped rule covering three decisions. interface for object shapes, because they extend. type for unions and computed types. unknown plus a type guard instead of any for untyped external data.

    Scoped to **/*.ts, **/*.mts, **/*.cts, and **/*.tsx through its paths: frontmatter, plus **/*.svelte and **/*.svelte.ts so svelte.md can defer to it. Claude Code loads it only when a matching file is in the working set, so it costs nothing on the always-loaded surface. Keep that frontmatter. A rule file without paths: is loaded on every turn.

    The rule assumes strict: true.

What it leaves alone

Doc comments and verification commands are out of scope on purpose.

Doc comments belong to code-comments.md in @houserules/plugin-prose, which covers TSDoc form in more depth than a per-language rule should restate. Running pnpm check and pnpm test belongs to the CLAUDE.md managed region, which says it once per turn rather than once per language rule that happens to load.

A rule that repeats something houserules already says costs resident budget every time it loads to say it again. This one says only what is specific to TypeScript's type system.

Part of houserules

houserules is a portable set of Claude Code infrastructure that keeps the agent's context lean. This is one of twelve first-party plugins. The package list has the rest.

License

MIT. See LICENSE.