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 mickeyyaya/refactoring-skills --skill typescript-review-patternsgit clone --depth 1 https://github.com/mickeyyaya/refactoring-skillsWrote 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/mickeyyaya/refactoring-skills/typescript-review-patterns)<a href="https://agentmods.dev/skills/mickeyyaya/refactoring-skills/typescript-review-patterns"><img src="https://agentmods.dev/badge/skills/mickeyyaya/refactoring-skills/typescript-review-patterns/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/mickeyyaya/refactoring-skills/typescript-review-patterns"><img src="https://agentmods.dev/badge/skills/mickeyyaya/refactoring-skills/typescript-review-patterns.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 | $0.00088 | $0.03724 |
| Opus 5 | $0.00044 | $0.01862 |
| Sonnet 5 | $0.00018 | $0.00745 |
| Haiku 4.5 | $0.00009 | $0.00372 |
Grade A, and why
typescript-review-patterns 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 9d 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 — 422 lines — stays where its author put it; the contents beside it link to each section on GitHub.
TypeScript Code Review Patterns
Overview
TypeScript adds a rich static type system on top of JavaScript, but the type system has escape hatches — and those escape hatches are where most TypeScript-specific bugs hide. A reviewer who does not know where the safety net has holes will miss real defects while flagging non-issues.
This skill covers five high-value review dimensions unique to TypeScript: type escape hatches (any, as, !, @ts-ignore), type narrowing (discriminated unions, type guards), async/Promise pitfalls (unhandled rejections, floating promises), React hook rules (stale closures, dependency arrays), and module patterns (barrel exports, import type).
Load alongside review-accuracy-calibration to score confidence before posting.
Quick Reference
| Review Dimension | Severity | Primary Red Flag |
|---|---|---|
any on public API boundary |
HIGH | param: any or : any in exported function |
as assertion without prior narrowing |
HIGH | value as SpecificType after JSON.parse or fetch |
Non-null assertion ! |
MEDIUM | obj!.prop where null is plausible |
@ts-ignore without explanation |
MEDIUM | suppress comment with no linked issue |
Missing type guard (is) |
MEDIUM | boolean check function used as narrowing |
| Unhandled Promise rejection | HIGH | async called without await or .catch() |
| Floating promise | HIGH | Promise expression with no await or handler |
async in forEach |
HIGH | arr.forEach(async (x) => ...) — errors swallowed |
Promise.all swallows partial failure |
MEDIUM | use allSettled when partial success matters |
Stale closure in useEffect |
HIGH | captured variable missing from dependency array |
| Missing dep in dependency array | HIGH | useEffect(() => { fn(x) }, []) — x missing |
| Conditional hook call | CRITICAL | if (cond) { useState(...) } inside component |
useCallback/useMemo overuse |
NIT | wrapping cheap callbacks without referential need |
| Barrel export blocking tree-shaking | MEDIUM | export * from './utils' in public library API |
Missing import type |
NIT | value import used only as a type |
| Mutable reducer state | HIGH | direct state.items.push(...) in reducer function |
Object or Function type |
MEDIUM | param: Object instead of typed interface |
| Numeric enum footguns | LOW | numeric enum used in serialized or flag context |
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.
- 9d ago First seen · 422 lines · 88 tokens per session scan A 649898c792a8
typescript-review-patterns is a skill published in the GitHub repository mickeyyaya/refactoring-skills (6 stars, last pushed 5mo ago), licensed MIT. It adds 88 tokens to every session and 3,724 once invoked, about $0.0004 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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