meta-design-expressive-typescript SKILL.md skillA
meta-design-expressive-typescript from agents-inc/skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add agents-inc/skills/meta-design-expressive-typescript@git:20261027.fefa4eaPins git:20261027.fefa4ea in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- agents-inc/skills
- Path
src/skills/meta-design-expressive-typescript/SKILL.md- Versions recorded
- 3
- Latest version
- git:20261027.fefa4ea, committed Oct 27, 2026
- First version recorded
- Mar 26, 2026
- Size
- 14,898 bytes
- Repository stars
- 26
- License
- MIT
Readable TypeScript functions — orchestrators over pure helpers, named predicates and transforms, guard clauses, exhaustive unions. Load when writing or refactoring a function that mixes validation, transformation and assembly, or when deciding whether an expression should be extracted.
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
# Expressive TypeScript Patterns > **Quick Guide:** One test decides every change: can a reader follow the flow without simulating any part of it? Where they cannot, the part they would simulate gets a name, and the function becomes an orchestrator — guards, named calls, assembly — over small pure helpers; where they can, the code stays inline. Two compiler checks carry the shape: a `never` default fails compilation when a union grows past its `switch`, and `as const satisfies` checks a config without widening its literals. **Detailed Resources:** - [examples/core.md](examples/core.md) — orchestrator before/after, named predicates, transforms and constants, guard clauses, exhaustive unions, async orchestrators, `as const satisfies` - [examples/data-transforms.md](examples/data-transforms.md) — grouping, counting, partitioning and indexing by name; when `pipe` helps and when it hurts - [reference.md](reference.md) — refactoring moves at a glance, and what each compiler check needs --- <critical_requirements> ## Before writing expressive TypeScript …
Read the whole file at its exact version.
How to install
mdr add agents-inc/skills/meta-design-expressive-typescript@sha256:d5c4d9c7abdaada1The line at the top of this page pins the label git:20261027.fefa4ea, 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_b7bxew5ed6w4oery)
2 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 3 versions of this file, between Mar 26, 2026 and Oct 27, 2026, about one every 107 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261027.fefa4ea latest | 2026-10-27 | fefa4ea | 14,898 B | A | view · diff |
| git:20261016.c00a712 | 2026-10-16 | c00a712 | 14,551 B | A | view · diff |
| git:20260326.68af79b | 2026-03-26 | 68af79b | 22,481 B | A | view |
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 (14898 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
agents-inc/skills · 26 stars · license MIT · pushed 2026-10-27 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_b7bxew5ed6w4oery GET https://markdownregistry.com/api/v1/resolve?ref=agents-inc/skills/meta-design-expressive-typescript GET https://markdownregistry.com/api/v1/blob/d5c4d9c7abdaada14a52a7985ef77a05e91315bcdc8c4b98f4c1d147b2b8f128
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.