ts-reuse-review
TS Reuse Review
Scans a TypeScript/JavaScript diff for code that reinvents existing utilities. Reports a prioritized list of reuse opportunities — external libs (es-toolkit, date-fns, zod), ES2020+ native APIs, installed project libs (effect, remeda, ts-pattern, etc.), and already-existing internal helpers. Never applies edits.
Prerequisites
- ripgrep — used for internal helper search. Install:
brew install ripgreporcargo install ripgrep. - ast-grep — structural pattern matching. Install:
npm i -g @ast-grep/cliorbrew install ast-grep.
If ast-grep is missing, fall back to ripgrep-only detection and flag the degraded mode in the report header. Do not abort.
Workflow
Do not read script source code. Run scripts directly and use --help for usage. Scripts live under scripts/ relative to this skill's directory.
Step 1: Determine review scope
If the scope is not already clear from the invocation, use AskUserQuestion:
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