Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add cass-2003/local-workflow-skill --skill typescript-advancedgit clone --depth 1 https://github.com/cass-2003/local-workflow-skillWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/cass-2003/local-workflow-skill/typescript-advanced)<a href="https://agentmods.dev/skills/cass-2003/local-workflow-skill/typescript-advanced"><img src="https://agentmods.dev/badge/skills/cass-2003/local-workflow-skill/typescript-advanced/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/cass-2003/local-workflow-skill/typescript-advanced"><img src="https://agentmods.dev/badge/skills/cass-2003/local-workflow-skill/typescript-advanced.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00117 | $0.03306 |
| Opus 5 | $0.00059 | $0.01653 |
| Sonnet 5 | $0.00023 | $0.00661 |
| Haiku 4.5 | $0.00012 | $0.00331 |
Grade A, and why
typescript-advanced scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 7d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 322 lines — stays where its author put it; the contents beside it link to each section on GitHub.
TypeScript Advanced Skill — 高级类型设计
何时使用
- 设计公共库 / SDK 的类型 API（type-level public surface）
- 把"运行时检查"上提到"类型层面"消除整类 bug
- 调试
Type 'X' is not assignable to 'Y'难以理解的错误 - TS 5.0+ 新特性落地（const type params / satisfies / decorators）
- 评审 PR 时检查
as any/// @ts-ignore/ 弱类型
一、tsconfig 严格度（公共库 / 应用基线）
{
"compilerOptions": {
// 严格族（必开）
"strict": true, // 一键开 8 个严格
"noUncheckedIndexedAccess": true, // arr[0] 推断为 T | undefined（强烈推荐）
"exactOptionalPropertyTypes": true, // { a?: T } 不允许 a: undefined 赋值
"noImplicitOverride": true, // 子类必须 override 关键字
"noPropertyAccessFromIndexSignature": true, // obj.foo vs obj["foo"]，索引签名只能用方括号
"noFallthroughCasesInSwitch": true,
"noImplicitReturns": true,
"useUnknownInCatchVariables": true, // catch (e: unknown) 而非 any
// 模块（现代项目）
"module": "ESNext",
"moduleResolution": "Bundler", // 5.0+ 推荐（vite/turbopack）
"verbatimModuleSyntax": true, // import type 严格区分
"isolatedModules": true,
// 库构建
"declaration": true,
"declarationMap": true,
"skipLibCheck": true, // 只跳过 node_modules 类型检查（速度）
}
}
noUncheckedIndexedAccess 是新项目最该开的 — 把"索引访问可能 undefined"提到类型层。
二、Utility Types 速查（内置）
| 工具 | 含义 | 例子 |
|---|---|---|
Partial<T> |
全字段可选 | type PatchUser = Partial<User> |
Required<T> |
全字段必填 | Required<{ a?: string }> → { a: string } |
Readonly<T> |
全字段只读 | Readonly<User> |
Pick<T,K> |
选子集 | Pick<User, 'id' | 'name'> |
Omit<T,K> |
排除子集 | Omit<User, 'password'> |
Record<K,V> |
字典类型 | Record<'zh' | 'en', string> |
Exclude<T,U> |
联合类型剔除 | Exclude<'a'|'b'|'c','b'> → 'a'|'c' |
Extract<T,U> |
联合类型提取 | Extract<string|number, string> → string |
NonNullable<T> |
去掉 null/undefined | NonNullable<string|null> → string |
Parameters<F> |
函数参数元组 | Parameters<(a:string,b:number)=>void> → [string,number] |
ReturnType<F> |
函数返回 | ReturnType<()=>Promise<User>> → Promise<User> |
Awaited<T> |
unwrap promise | Awaited<Promise<User>> → User |
InstanceType<C> |
class 实例类型 | InstanceType<typeof Foo> |
ConstructorParameters<C> |
class 构造参数 |
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 7d ago First seen · 322 lines · 117 tokens per session scan A 786d15ecda70
typescript-advanced is a skill published in the GitHub repository cass-2003/local-workflow-skill (12 stars, last pushed 2mo ago), licensed MIT. It adds 117 tokens to every session and 3,306 once invoked, about $0.0006 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.
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