A solid baseline for modern TypeScript projects that leans hard into strict mode and runtime validation with Zod. The skill pushes you toward 2025 best practices like noUncheckedIndexedAccess and using unknown instead of any, which will catch real bugs but requires discipline. It's opinionated about config (strict mode, declaration files for libraries) and API patterns (Zod schemas at boundaries, satisfies for type narrowing). The graduated approach for existing projects is smart: start with strict false, progressively fix issues. If you're starting fresh or modernizing a TypeScript codebase and want guard rails that actually prevent runtime errors, this gives you a reasonable starting point without having to research every tsconfig flag yourself.
npx skills add https://github.com/bobmatnyc/claude-mpm-skills --skill typescript-core