nw-fp-typescript SKILL.md skillA
nw-fp-typescript from nwave-ai/nwave is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add nwave-ai/nwave/nw-fp-typescript@git:20261102.c67d57bPins git:20261102.c67d57b in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- nwave-ai/nwave
- Path
nWave/skills/nw-fp-typescript/SKILL.md- Versions recorded
- 1
- Latest version
- git:20261102.c67d57b, committed Nov 2, 2026
- Size
- 9,211 bytes
- Repository stars
- 633
- License
- MIT
TypeScript language-specific patterns with fp-ts/Effect, discriminated unions, and railway-oriented error handling.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# FP in TypeScript -- Functional Software Crafter Skill Cross-references: [fp-principles](../nw-fp-principles/SKILL.md) | [fp-domain-modeling](../nw-fp-domain-modeling/SKILL.md) | [pbt-typescript](../nw-pbt-typescript/SKILL.md) ## When to Choose TypeScript - Best for: teams already on the Node/browser ecosystem wanting FP DISCIPLINE without a new runtime | full-stack projects sharing domain types between client and server | the most common first encounter with FP for many engineers - Not ideal for: teams wanting the compiler to ENFORCE purity (TS purity is a convention, `any`/`as` can always escape it) | CPU-bound work needing a stricter type system's exhaustiveness guarantees ## [STARTER] Quick Setup ```bash mkdir order-service && cd order-service && npm init -y npm install typescript fp-ts --save npm install --save-dev fast-check vitest npx tsc --init --strict ``` **Test runner**: Vitest or Jest. `"strict": true` in `tsconfig.json` is load-bearing -- without it, `null`/ `undefined` silently widen every type and most patterns below lose their guarantee. ## [STARTER] Type System for Domain Modeling ### Choice Types (Discriminated Unions) ```typescript …
Read the whole file at its exact version.
How to install
mdr add nwave-ai/nwave/nw-fp-typescript@sha256:b4cf20fff452757dThe line at the top of this page pins the label git:20261102.c67d57b, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_dbtv5gwwsttd7t5k)
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Versions
The registry has recorded 1 version of this file, committed on Nov 2, 2026.
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (9211 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
nwave-ai/nwave · 633 stars · license MIT · pushed 2026-11-07 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_dbtv5gwwsttd7t5k GET https://markdownregistry.com/api/v1/resolve?ref=nwave-ai/nwave/nw-fp-typescript GET https://markdownregistry.com/api/v1/blob/b4cf20fff452757d918fde13656cf8a04fec9c3a46cce0deac0ef8e7d70059d1
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.