I shipped my first npm package with AI — and it's already in production

Short summary

Developer built daterly, a production React date picker optimized for react-hook-form, using Claude Code for algorithms and boilerplate. Key insight: AI excels at tedious work but needs careful review, not autonomous operation. Publishing required Changesets versioning, Playwright/Vitest tests, CI budgets, and dual ESM/CJS builds.

• •Built and shipped a React component library using Claude Code, solving real pain points with react-datepicker and react-hook-form integration
• •AI accelerated algorithm work (masked input round-trip validation) and boilerplate (build config, TypeScript setup) but required careful code review
• •Production shipping means serious tooling: Changesets for versioning, comprehensive tests, CI coverage budgets, and dual-build support

Generated with AI, which can make mistakes.