javascript-typescript-code-style

A set of writing rules for JavaScript and TypeScript code. It favors modern language features, functional patterns, minimal use of classes, and clear variable names.

In plain words
What is it for?
Use it when generating or revising JavaScript and TypeScript, especially when choosing code structure, language features, and variable names.
Why use it?
It gives a coding agent consistent conventions, making code easier to read, review, and maintain across a project.

Cursor rule

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/paulpham157/paul-s-cursor-rules/javascript-typescript-code-style
Clone the repo
git clone --depth 1 https://github.com/paulpham157/paul-s-cursor-rules
Per session 0 Nothing until a file matches its globs; then the whole rule loads.
When invoked 88 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 $0.00088
Opus 5 $0.00000 $0.00044
Sonnet 5 $0.00000 $0.00018
Haiku 4.5 $0.00000 $0.00009

Measured 2d ago against content hash e4b39e42e44c, 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-style 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 2d 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.

Origin

Copies of this mod

2 near-identical copies found in the catalogue:

1/framework_rules/rules/chrome-extension-dev-js-typescript-cursorrules-pro/javascript-typescript-code-style.mdc · 8 lines

What it actually says

  • Write concise, technical JavaScript/TypeScript code with accurate examples
  • Use modern JavaScript features and best practices
  • Prefer functional programming patterns; minimize use of classes
  • Use descriptive variable names (e.g., isExtensionEnabled, hasPermission)
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. 2d ago First seen · 8 lines · 88 tokens per session scan A e4b39e42e44c

Subscribe to this mod's changes

javascript-typescript-code-style is a cursor rule published in the GitHub repository paulpham157/paul-s-cursor-rules (27 stars, last pushed 1y ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 88 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.