smart-typecheck

/plugin install smart-typecheck --marketplace rezk2ll/skills

What it does

After a turn where Claude edited code, runs npm run check once in each package it touched, and toasts if it fails. You find a type error at the end of the turn, not in CI.

When to use it

• Your packages have a check script (tsc --noEmit, svelte-check, vue-tsc, a lint pass).
• You work in a monorepo and only want the packages you changed checked.

How it works

• Records every successful Edit or Write to a .ts, .tsx, .js, .jsx, .mjs, .cjs, .svelte or .vue file.
• When the main turn ends, walks up from each file to its nearest package.json inside the session root. If that package has the script, it is checked once, however many of its files changed.
• Shows the package name in the status line while the check runs (up to 3 minutes), and a toast if it exits non-zero.
• Subagent turns are skipped. Packages without the script are skipped.

Configuration

Set these with /config, or under pluginConfigs in your user settings.

• script (default check): the package.json script to run.
• packageManager (default npm): the command that runs it, as in <packageManager> run <script>. Use pnpm, yarn or bun if that is what your repo uses.

Requirements

• Claude Code 2.1.287 or later.
• The package manager you configure, on your PATH.

{ "modules": ["./register.ts"] }