js-library-packaging SKILL.md skillA
js-library-packaging from event4u-app/agent-config is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add event4u-app/agent-config/js-library-packaging@git:20261013.503b4e9Pins git:20261013.503b4e9 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- event4u-app/agent-config
- Path
src/skills/js-library-packaging/SKILL.md- Versions recorded
- 3
- Latest version
- git:20261013.503b4e9, committed Oct 13, 2026
- First version recorded
- Aug 23, 2026
- Size
- 9,295 bytes
- Repository stars
- 19
- License
- MIT
Use when a JavaScript/TypeScript package is consumed by another package — exports map, peer vs. direct dependencies, files allow-list, and whether it should be built at all.
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
# js-library-packaging > **Pack placement.** `engineering-base`. The step asked for it to be *suggested by* the > `react` and `typescript` packs, and the skill schema carries no `suggested_by` key — so the > intent is recorded here rather than expressed in frontmatter that would fail validation. > A React or TypeScript consumer receives this skill through `engineering-base`, which both > of those packs require. The JavaScript twin of `composer-packages`. A component is a file; a **library** is a package with a public surface, and that surface is declared in `package.json` rather than inferred. Most of the failures below are silent at author time and loud at the consumer's — which is why the surface is read, not assumed. ## The Iron Law ``` `react` AND `react-dom` ARE peerDependencies. NEVER dependencies. `types` IS THE FIRST KEY OF EVERY CONDITIONS OBJECT. DECIDE buildable-VS-source-consumed BEFORE WRITING THE EXPORTS MAP. NEVER HAND-BUMP A VERSION. ``` ## When to use A package in the repository is imported by another package, or is about to be published: an `exports` map is being written or changed, a hook fails at runtime with *"invalid hook …
Read the whole file at its exact version.
How to install
mdr add event4u-app/agent-config/js-library-packaging@sha256:ecdb9ffcf512e279The line at the top of this page pins the label git:20261013.503b4e9, 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_pspjcrnsndu3nu6n)
6 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 3 versions of this file, between Aug 23, 2026 and Oct 13, 2026, about one every 26 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261013.503b4e9 latest | 2026-10-13 | 503b4e9 | 9,295 B | A | view · diff |
| git:20261002.90a0ad5 | 2026-10-02 | 90a0ad5 | 9,191 B | A | view · diff |
| git:20260823.bab97ce | 2026-08-23 | bab97ce | 9,257 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 (9295 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
event4u-app/agent-config · 19 stars · license MIT · pushed 2026-11-05 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_pspjcrnsndu3nu6n GET https://markdownregistry.com/api/v1/resolve?ref=event4u-app/agent-config/js-library-packaging GET https://markdownregistry.com/api/v1/blob/ecdb9ffcf512e27962db0fced432cf83fa9670cb8c579a5a685b706e4552ee6a
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.