refactor

A procedure for refactoring TypeScript code, with tools for understanding symbols, types, and references before changing them.

In plain words
What is it for?
Use it to inspect modules, rename or delete symbols, find usages, move files, and run type and style checks afterward.
Why use it?
It reduces the chance of renaming, deleting, or moving code while leaving broken references behind.

Command for Claude Code

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 commands/mizchi/lsmcp/refactor
Clone the repo
git clone --depth 1 https://github.com/mizchi/lsmcp

Made for: Claude Code.

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 610 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 $0.00610
Opus 5 $0.00000 $0.00305
Sonnet 5 $0.00000 $0.00122
Haiku 4.5 $0.00000 $0.00061

Measured 2d ago against content hash 5c6d2514a800, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, 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 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.

.claude/commands/refactor.md · 66 lines

How it starts

The opening of the file, as written. The whole thing — 66 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Refactor Command

When I need to refactor TypeScript code in this project, follow these steps:

1. Analyze Current Code Structure

  • Use mcp__typescript__get_module_symbols to understand module exports
  • Use mcp__typescript__get_type_at_symbol to analyze type information
  • Use mcp__typescript__find_references to find all usages before refactoring

2. Choose Appropriate Refactoring Tools

For Symbol Operations

  • Rename: Use mcp__typescript__rename_symbol instead of Edit/MultiEdit
  • Delete: Use mcp__typescript__delete_symbol to remove symbols and their references
  • Find usages: Use mcp__typescript__find_references instead of grep

For File Operations

  • Move file: Use mcp__typescript__move_file instead of bash mv
  • Move directory: Use mcp__typescript__move_directory for entire directories

For Type Analysis

  • Get type info: Use mcp__typescript__get_type_at_symbol
  • Module analysis: Use mcp__typescript__get_module_symbols
  • Scope analysis: Use mcp__typescript__get_symbols_in_scope

3. Verify Changes

After refactoring:

  1. Run pnpm typecheck to ensure no TypeScript errors
  2. Run pnpm lint to check code style
  3. Run pnpm test to verify functionality
  4. Use mcp__typescript__get_diagnostics to check for issues

4. Common Refactoring Patterns

Extract Interface/Type

  1. Identify the type structure using get_type_at_symbol
  2. Create new type definition file
  3. Use rename_symbol to update references

Move Module

  1. Use move_file or move_directory
  2. Tool automatically updates all imports
  3. Verify with get_diagnostics

Rename Across Project

  1. Use find_references to see impact
  2. Use rename_symbol for safe renaming
  3. Check affected files with git status

5. Best Practices

  • Always use TypeScript MCP tools for semantic operations
  • Never use text-based Edit/MultiEdit for refactoring
  • Check references before deleting or moving
  • Run tests after each refactoring step
  • Commit frequently with descriptive messages

Read the full file on GitHub · 66 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. 2d ago First seen · 66 lines · 0 tokens per session scan A 5c6d2514a800

Subscribe to this mod's changes

refactor is a command published in the GitHub repository mizchi/lsmcp (453 stars, last pushed 10mo ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 610 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.