refactor

refactor is a command for Claude Code from Justdvp/claude-code-templates. It costs 0 tokens per session (335 once invoked), scanned A, original, MIT.

A JavaScript and TypeScript code-refactoring assistant. It examines existing code, changes its structure or style while preserving behavior, and checks the result with tests and type information.

In plain words
What is it for?
Modernizing JavaScript or TypeScript, extracting reusable code, improving types and names, replacing callbacks with async and await, simplifying logic, and improving tests or performance.
Why use it?
It removes repetitive cleanup and restructuring work while keeping the intended behavior in view. It helps address duplicate code, complex logic, weak types, outdated patterns, and inconsistent error handling.

Command for Claude Code

Written for Claude Code: $ARGUMENTS substitution.

Good fit Modernizing JavaScript or TypeScript, extracting reusable code, improving types and names, replacing callbacks with async and await, simplifying logic, and improving tests or performance.

Compare 6 commands from other repositories ↓
Install with agentmods
npx agentmods add commands/justdvp/claude-code-templates/refactor
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.

Clone the repo
git clone --depth 1 https://github.com/Justdvp/claude-code-templates

Made for: Claude Code.

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 refactor

README.md
[![agentmods](https://agentmods.dev/badge/commands/justdvp/claude-code-templates/refactor/github.svg)](https://agentmods.dev/commands/justdvp/claude-code-templates/refactor)
Your own site
<a href="https://agentmods.dev/commands/justdvp/claude-code-templates/refactor"><img src="https://agentmods.dev/badge/commands/justdvp/claude-code-templates/refactor/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.

agentmods 80×15 button for refactor

Your own site · 80×15
<a href="https://agentmods.dev/commands/justdvp/claude-code-templates/refactor"><img src="https://agentmods.dev/badge/commands/justdvp/claude-code-templates/refactor.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 0 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 335 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
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 5.1 $0.00000 $0.00335
Opus 5.5 $0.00000 $0.00134
Sonnet 5.5 $0.00000 $0.00067
Haiku 4.5 $0.00000 $0.00034

Measured 1mo ago against content hash 760bb38335cb, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

refactor 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 1mo 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

1 near-identical copy found in the catalogue:

  • refactor — 100% identical, 0 lines differ
cli-tool/templates/javascript-typescript/.claude/commands/refactor.md · 55 lines

What it actually says

Code Refactoring Assistant

Refactor $ARGUMENTS following modern JavaScript/TypeScript best practices.

Task

I'll help you refactor code by:

  1. Analyzing the current implementation
  2. Identifying improvement opportunities
  3. Applying modern patterns and practices
  4. Maintaining existing functionality
  5. Ensuring type safety and test coverage
  6. Documenting the changes made

Process

I'll follow these steps:

  1. Examine the code to understand its purpose and structure
  2. Identify code smells, anti-patterns, or outdated approaches
  3. Plan the refactoring strategy with clear goals
  4. Implement changes incrementally while maintaining behavior
  5. Verify refactored code with tests
  6. Document improvements and benefits

Refactoring Techniques

I can apply various refactoring techniques:

  • Converting to modern JavaScript/TypeScript features
  • Improving type definitions and type safety
  • Extracting reusable functions and components
  • Applying design patterns appropriately
  • Converting callbacks to Promises or async/await
  • Simplifying complex conditionals and loops
  • Removing duplicate code
  • Improving naming and readability
  • Optimizing performance
  • Enhancing error handling

Modern Practices I Can Apply

  • ES modules and import/export syntax
  • Optional chaining and nullish coalescing
  • Array and object destructuring
  • Spread and rest operators
  • Template literals
  • Arrow functions
  • Class fields and private methods
  • TypeScript utility types
  • Functional programming patterns
  • React hooks (for React components)

I'll ensure the refactored code maintains compatibility with your project's requirements while improving quality and maintainability.

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. 1mo ago First seen · 55 lines · 0 tokens per session scan A 760bb38335cb

Subscribe to this mod's changes

refactor is a command published in the GitHub repository Justdvp/claude-code-templates (7 stars, last pushed 10d ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 335 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 2026-08-31.

Related

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