async-state-type SKILL.md skillA
async-state-type from ncaq/konoka is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add ncaq/konoka/async-state-type@git:20260512.a1aeadfPins git:20260512.a1aeadf in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- ncaq/konoka
- Path
plugins/web-tasuke/skills/async-state-type/SKILL.md- Versions recorded
- 2
- Latest version
- git:20260512.a1aeadf, committed May 12, 2026
- First version recorded
- Apr 7, 2026
- Size
- 3,264 bytes
- Repository stars
- 3
- License
- Apache-2.0
Avoid contradictory state types for async data fetching. Use Suspense or discriminated unions instead. Use when writing or reviewing async data fetching code in React/TypeScript.
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
# 非同期データ取得の型設計
## 矛盾した状態を許容する型を避ける
非同期データ取得において以下のような型設計は避けてください。
```typescript
// Bad: dataにアクセス可能なのにloading/errorも同時に存在しうる
type AsyncState<T> = {
data: T | undefined;
loading: boolean;
error: Error | undefined;
};
```
この型は以下の問題を持ちます。
- `data`が存在するのに`loading: true`という矛盾した状態を型が許容します
- `data`と`error`が同時に存在する状態を型が許容します
- 実行時の状態遷移に依存しており、型レベルでの安全性がありません
## 推奨されるアプローチ
### Suspenseパターンを使う
React Suspenseを使えば、ローディング中はコンポーネントがレンダリングされないため、
`data`の型が確定します。
```tsx
// Good: useSuspenseQueryはdataがT型で確定している
function UserList() {
const { data } = useSuspenseQuery({
queryKey: ["users"],
queryFn: fetchUsers,
});
// data: User[] (undefinedにならない)
return (
<ul>
{data.map((user) => (
<li key={user.id}>{user.name}</li>
))}
</ul>
);
}
// 親コンポーネントでSuspenseとErrorBoundaryを使う
<ErrorBoundary fallback={<ErrorMessage />}>
<Suspense fallback={<Loading />}>
<UserList />
</Suspense>
</ErrorBoundary>;
```
### 判別共用体(Discriminated Union)を使う
Suspenseが使えない場合は、状態を排他的に表現する判別共用体を使ってください。
```typescript
// Good: 状態が排他的に表現されている
type AsyncState<T> =
| { status: "loading" }
| { status: "error"; error: Error }
| { status: "success"; data: T };
```
…Read the whole file at its exact version.
How to install
mdr add ncaq/konoka/async-state-type@sha256:7de429205e2a81eeThe line at the top of this page pins the label git:20260512.a1aeadf, 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_aghe4w734cjoturp)
1 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 2 versions of this file, between Apr 7, 2026 and May 12, 2026, about one every 35 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260512.a1aeadf latest | 2026-05-12 | a1aeadf | 3,264 B | A | view · diff |
| git:20260407.8cdba48 | 2026-04-07 | 8cdba48 | 3,256 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 (3264 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
ncaq/konoka · 3 stars · license Apache-2.0 · pushed 2026-10-19 · branch master
API
GET https://markdownregistry.com/api/v1/artifacts/art_aghe4w734cjoturp GET https://markdownregistry.com/api/v1/resolve?ref=ncaq/konoka/async-state-type GET https://markdownregistry.com/api/v1/blob/7de429205e2a81ee6e76f529c806dc25856bdcf4f0163f7b66a33f99e8b2ac26
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.