Show HN: FP-pack – Functional pipelines in TypeScript without monads

Hacker News (score: 11)
Found: January 03, 2026
ID: 2886

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Show HN: FP-pack – Functional pipelines in TypeScript without monads Hi HN,

I built fp-pack, a small TypeScript functional utility library focused on pipe-first composition.

The goal is to keep pipelines simple and readable, while still supporting early exits and side effects — without introducing monads like Option or Either.

Most code uses plain pipe/pipeAsync. For the few cases that need early termination, fp-pack provides a SideEffect-based pipeline that short-circuits safely.

I also wrote an “AI agent skills” document to help LLMs generate consistent fp-pack-style code.

Feedback, criticism, or questions are very welcome.

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