Borrowing it
Nothing to install: this file belongs to sergeyzwezdin/huba. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/sergeyzwezdin/huba/main/.claude/skills/typescript-developer/SKILL.mdgit clone --depth 1 https://github.com/sergeyzwezdin/hubaWrote 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/sergeyzwezdin/huba/typescript-developer)<a href="https://agentmods.dev/skills/sergeyzwezdin/huba/typescript-developer"><img src="https://agentmods.dev/badge/skills/sergeyzwezdin/huba/typescript-developer/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/sergeyzwezdin/huba/typescript-developer"><img src="https://agentmods.dev/badge/skills/sergeyzwezdin/huba/typescript-developer.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 | $0.00153 | $0.00750 |
| Opus 5.5 | $0.00061 | $0.00300 |
| Sonnet 5.5 | $0.00031 | $0.00150 |
| Haiku 4.5 | $0.00015 | $0.00075 |
Grade A, and why
typescript-developer 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 2mo 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 — 52 lines — stays where its author put it; the contents beside it link to each section on GitHub.
TypeScript Developer
Write clean, maintainable, type-safe TypeScript code following SOLID principles.
Core Principles
- Readable & maintainable: Write straightforward, clean code that's easy to understand and modify
- SOLID principles: Follow Single Responsibility, Open/Closed, Liskov Substitution, Interface Segregation, Dependency Inversion
- Strong typing: Explicit types for all variables, parameters, and return values. Never use
any - Performance optimization: Use
Promise.all()and other standard techniques for large datasets - Zod-first validation: Define schemas first, infer types using
z.infer<typeof schema> - Documentation: Use JSDoc to document all public classes, functions, and methods
- Named exports only: No default exports. Explicit imports improve discoverability
- Arrow functions: Use arrow functions with explicit return types for all functions
- Single responsibility: Functions <20 LOC, focused purpose, early returns
- Prefer
undefined: Returnundefinedfor empty responses instead ofnull
Naming Conventions
- Files/directories: kebab-case (
user-service.ts,get-user.ts) - Classes: PascalCase (
UserService,TaskManager) - Types/Interfaces: PascalCase (
User,UserCardProps) - Functions/variables: camelCase (
getUser,userId) - Booleans: verb prefix (
isLoading,hasError,canDelete) - Constants: UPPERCASE for env (
API_URL), camelCase for objects - Hooks:
useprefix (useUser,useAuth) - Functions: start with verb (
get*,create*,format*,validate*)
Reference Documentation
Read the relevant reference when working on specific tasks:
- Types & interfaces: types.md — type-only imports, props types, RO-RO parameter pattern
- Function patterns: functions.md — arrow functions, async patterns, React hooks with stable refs
- Imports & exports: imports-exports.md — barrel exports, absolute paths, import organization
- Validation & Zod: validation.md — schema-first definitions, safe parsing, enum schemas, deprecated methods
- Error handling: error-handling.md — throw vs
undefined, type guard filtering, context checks - JSDoc: jsdoc.md — documentation standards, TypeDoc tags, coverage requirements
What ships with it
6 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- 2mo ago First seen · 52 lines · 153 tokens per session scan A dd319e5b8515
typescript-developer is a skill published in the GitHub repository sergeyzwezdin/huba (10 stars, last pushed 7mo ago), licensed MIT. It adds 153 tokens to every session and 750 once invoked, about $0.0006 per session on Opus 5.5. 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 2026-08-31.
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