agentmods.dev

typescript

typescript is a cursor rule for Cursor from iloveitaly/llm-ide-rules. It costs 0 tokens per session (458 once invoked), scanned A, original, MIT.

Project rules for organizing TypeScript frontend code in a React application. They define where shared code, utilities, page helpers, hooks, components, and configuration should live, along with several coding conventions.

In plain words
What is it for?
Use it when adding or moving frontend files, choosing between shared utilities and page-specific helpers, reading environment variables, logging, or running the project's JavaScript checks.
Why use it?
A growing frontend can become difficult to navigate when similar code is placed inconsistently. These rules give developers a common structure and avoid unsupported tooling or inconsistent patterns.

Cursor rule for Cursor

not rated 13 4d ago A scan 0 tokens original MIT
View the source file iloveitaly/llm-ide-rules
Install

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.

agentmods
npx agentmods add rules/iloveitaly/llm-ide-rules/typescript
Clone the repo
git clone --depth 1 https://github.com/iloveitaly/llm-ide-rules

Made for: Cursor.

Wrote 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.

agentmods badge for typescript

README.md
[![agentmods](https://agentmods.dev/badge/rules/iloveitaly/llm-ide-rules/typescript.svg)](https://agentmods.dev/rules/iloveitaly/llm-ide-rules/typescript)
Your own site
<a href="https://agentmods.dev/rules/iloveitaly/llm-ide-rules/typescript"><img src="https://agentmods.dev/badge/rules/iloveitaly/llm-ide-rules/typescript.svg" alt="Measured on agentmods" height="20"></a>
Per session 0 Nothing until a file matches its globs; then the whole rule loads.
When invoked 458 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5 $0.00000 $0.00458
Opus 5 $0.00000 $0.00229
Sonnet 5 $0.00000 $0.00092
Haiku 4.5 $0.00000 $0.00046

Measured 3d ago against content hash 379d420b4144, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

typescript 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 3d 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.

.cursor/rules/typescript.mdc · 36 lines

What it actually says

Typescript

  • Use pnpm or pnpx and not npm or npx.
    • Use just js_shadcn, just pnpm, and just js_lint instead of executing these operations exactly. @just/javascript.just
  • Node libraries are not available
  • Use lib/ for generic code, utils/ for project utilities, hooks/ for React hooks, and helpers/ for page-specific helpers.
  • Prefer function theName() { over const theName = () =>
  • Use import { invariant } from @epic-web/invariant instead of another invariant library
  • Use requireEnv("VITE_THE_ENV_VAR") instead of process.env.THE_ENV_VAR
  • Don't use console.{log,error}. Use from ~/configuration/logging import log and log.info("string", {structured: "log"}) instead.

Here's how frontend code is organized in web/app/:

  • lib/ not specific to the project. This code could be a separate package at some point.
  • utils/ project-specific code, but not specific to a particular page.
  • helpers/ page- or section-specific code that is not a component, hook, etc.
  • hooks/ react hooks.
  • configuration/ providers, library configuration, and other setup code.
  • components/ react components.
    • ui/ reusable ShadCN UI components (buttons, forms, etc.).
    • shared/ components shared across multiple pages.
    • create additional folders for route- or section-specific components.

Dates & Times

  • Always use the ISO 8601 format when sending dates in an API request.
  • Use Temporal for any date or time manipulation. You can assume it's available in the browser.
  • DateTime objects should always be converted to UTC before included in any API request. Never send a timestamp with the user's timezone.
  • Unless otherwise specified, do not shift server-provided times based on the user's timezone.
Changes

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.

  1. 3d ago First seen · 36 lines · 458 tokens per session scan A 379d420b4144

Subscribe to this mod's changes

typescript is a cursor rule published in the GitHub repository iloveitaly/llm-ide-rules (13 stars, last pushed 4d ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 458 tokens. 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 2026-08-30.

FrontendLLMLanguagesTypeScriptautomationcopilotcursorinstructions
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