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.
FP-pack – Functional pipelines in TypeScript without monads launched on January 3, 2026 with 14 votes, #815 of 14,584 launches that month and more than 90% of that year's launches.
In plain words
FP-pack is a TypeScript functional utility library designed for developers who want readable pipe-based composition without monads. It provides straightforward pipe and pipeAsync functions for most operations, with a SideEffect-based pipeline for cases requiring early termination or short-circuiting. The library includes documentation to help AI tools generate consistent code in its style, making it useful for both human developers and AI-assisted programming workflows.
written from the facts on this page · September 2026
From the sources
A functional toolkit focused on type-safe pipelines, not FP dogma, for JavaScript and TypeScript. - superlucky84/fp-pack
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