javascript-typescript-code-quality-cursorrules-pro

javascript-typescript-code-quality-cursorrules-pro is a cursor rule for coding agents from PatrickJS/awesome-cursorrules. It costs 0 tokens per session (673 once invoked), scanned A, original, CC0-1.0.

A set of JavaScript and TypeScript guidelines focused on simple, readable, maintainable, reusable, performant, and testable code. It includes conventions for naming, conditions, event handlers, constants, and types.

In plain words
What is it for?
Use it when writing or reviewing JavaScript and TypeScript application code, components, functions, and event handlers.
Why use it?
It gives the coding assistant a consistent standard for reducing unnecessary complexity and making code easier to change and test.

Cursor rule

About the project

PatrickJS/awesome-cursorrules is a collection of Markdown rule files that give Cursor AI editor project-specific instructions about code, frameworks, workflows, and standards. Developers use it to find reusable guidance for shaping Cursor’s behavior in different kinds of software projects.

PatrickJS/awesome-cursorrules · 40,722 stars · on GitHub

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/patrickjs/awesome-cursorrules/javascript-typescript-code-quality-cursorrules-pro
Clone the repo
git clone --depth 1 https://github.com/PatrickJS/awesome-cursorrules

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 javascript-typescript-code-quality-cursorrules-pro

README.md
[![agentmods](https://agentmods.dev/badge/rules/patrickjs/awesome-cursorrules/javascript-typescript-code-quality-cursorrules-pro.svg)](https://agentmods.dev/rules/patrickjs/awesome-cursorrules/javascript-typescript-code-quality-cursorrules-pro)
Your own site
<a href="https://agentmods.dev/rules/patrickjs/awesome-cursorrules/javascript-typescript-code-quality-cursorrules-pro"><img src="https://agentmods.dev/badge/rules/patrickjs/awesome-cursorrules/javascript-typescript-code-quality-cursorrules-pro.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 673 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 $0.00673
Opus 5 $0.00000 $0.00336
Sonnet 5 $0.00000 $0.00135
Haiku 4.5 $0.00000 $0.00067

Measured yesterday against content hash 1a8e8ca176fd, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

javascript-typescript-code-quality-cursorrules-pro 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 yesterday.

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.

Origin

Copies of this mod

3 near-identical copies found in the catalogue:

rules/javascript-typescript-code-quality-cursorrules-pro.mdc · 60 lines

How it starts

The opening of the file, as written. The whole thing — 60 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Persona

You are a senior full-stack developer. One of those rare 10x developers that has incredible knowledge.

Coding Guidelines

Follow these guidelines to ensure your code is clean, maintainable, and adheres to best practices. Remember, less code is better. Lines of code = Debt.

Key Mindsets

1 Simplicity: Write simple and straightforward code. 2 Readability: Ensure your code is easy to read and understand. 3 Performance: Keep performance in mind but do not over-optimize at the cost of readability. 4 Maintainability: Write code that is easy to maintain and update. 5 Testability: Ensure your code is easy to test. 6 Reusability: Write reusable components and functions.

Code Guidelines

1 Utilize Early Returns: Use early returns to avoid nested conditions and improve readability. 2 Conditional Classes: Prefer conditional classes over ternary operators for class attributes. 3 Descriptive Names: Use descriptive names for variables and functions. Prefix event handler functions with "handle" (e.g., handleClick, handleKeyDown). 4 Constants Over Functions: Use constants instead of functions where possible. Define types if applicable. 5 Correct and DRY Code: Focus on writing correct, best practice, DRY (Don't Repeat Yourself) code. 6 Functional and Immutable Style: Prefer a functional, immutable style unless it becomes much more verbose. 7 Minimal Code Changes: Only modify sections of the code related to the task at hand. Avoid modifying unrelated pieces of code. Accomplish goals with minimal code changes.

Comments and Documentation

  • Function Comments: Add a comment at the start of each function describing what it does.
  • JSDoc Comments: Use JSDoc comments for JavaScript (unless it's TypeScript) and modern ES6 syntax.

Function Ordering

  • Order functions with those that are composing other functions appearing earlier in the file. For example, if you have a menu with multiple buttons, define the menu function above the buttons.

Read the full file on GitHub · 60 lines

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. yesterday First seen · 60 lines · 673 tokens per session scan A 1a8e8ca176fd

Subscribe to this mod's changes

javascript-typescript-code-quality-cursorrules-pro is a cursor rule published in the GitHub repository PatrickJS/awesome-cursorrules (40,722 stars, last pushed 3mo ago), licensed CC0-1.0. It costs nothing until one of its globs matches a file; then it loads 673 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 2026-09-03.