--- title: Claude Code Refactoring: A Practical Workflow | daily.dev description: A structured workflow for using Claude Code (Anthropic's agentic CLI tool) to safely refactor JavaScript code. The guide covers three phases: Read (map all... canonical: https://daily.dev/posts/claude-code-refactoring-a-practical-workflow-tucugcesb twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Claude Code Refactoring: A Practical Workflow | daily.dev og:description: A structured workflow for using Claude Code (Anthropic's agentic CLI tool) to safely refactor JavaScript code. The guide covers three phases: Read (map all... og:url: https://daily.dev/posts/claude-code-refactoring-a-practical-workflow-tucugcesb og:image: https://api.daily.dev/og/posts/TucUgCeSb.png og:image:alt: Claude Code Refactoring: A Practical Workflow og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Claude Code Refactoring: A Practical Workflow **[SitePoint](https://daily.dev/sources/sitepoint)** · 17 min read · 0 upvotes · 0 comments ## Summary A structured workflow for using Claude Code (Anthropic's agentic CLI tool) to safely refactor JavaScript code. The guide covers three phases: Read (map all dependencies before touching any file), Plan (generate and review a step-by-step refactoring plan), and Execute (apply changes incrementally with git commits and test runs between steps). A concrete example walks through decomposing a monolithic Express.js route handler into separate validator and route modules. Key practices include configuring a CLAUDE.md file to declare scope boundaries, using git branches for rollback safety, verifying no unintended file changes via git diff, and keeping sessions under 5 files to avoid context window issues. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Questions this post answers ### How do I stop Claude Code from making unwanted edits while it's just analyzing my code? Use a read-before-changing pattern: explicitly instruct Claude Code in the prompt not to modify any files, and reinforce this in a CLAUDE.md file with a rule requiring an approved plan before execution. Neither layer is a guaranteed hard stop, so verify compliance afterward with git diff --name-only, which should return no output if nothing was touched. _Developers hardening their AI refactoring workflow can compare approaches like this on daily.dev._ ### How many files should I let an AI coding agent refactor in a single session? Cap a session at roughly 5 files or fewer, or keep the total token count of in-scope files under about 40% of the model's context limit. Beyond that, agentic tools like Claude Code tend to produce inconsistent edits, such as updating an import in one file but missing the same import elsewhere; larger refactors should be split into sequential read-map-plan-execute cycles. _Teams scoping AI-assisted refactors can find practical limits like this on daily.dev._ ### What is a CLAUDE.md file used for in Claude Code? It is a project-root configuration file, with a case-sensitive uppercase filename on Linux and macOS, that Claude Code reads to pick up session-level instructions such as which files are in scope for changes, which files are read-only, and project context like the runtime, framework, and test runner. It is not enforced by the tool itself, so changes should still be verified with git diff. _Developers setting project rules for AI coding agents can dig into examples like this on daily.dev._ ## Similar posts on daily.dev - [Untitled](https://daily.dev/posts/untitled-0strkzctw) · SitePoint · 0 upvotes · 0 comments - [How to Refactor Code with Claude Code](https://daily.dev/posts/how-to-refactor-code-with-claude-code-qxpmmtybz) · Towards Data Science · 1 upvotes · 0 comments - [Claude Code felt overhyped until I discovered the workflow that makes it genuinely powerful](https://daily.dev/posts/claude-code-felt-overhyped-until-i-discovered-the-workflow-that-makes-it-genuinely-powerful-ellcs8hij) · XDA Developers · 0 upvotes · 0 comments - [How to Make Claude Code Follow Your Project Rules](https://daily.dev/posts/how-to-make-claude-code-follow-your-project-rules-zgumwnp6g) · Medium · 0 upvotes · 0 comments - [How I Extend My Workflow with Claude Code CLI](https://daily.dev/posts/how-i-extend-my-workflow-with-claude-code-cli-4mt9ezjnc) · Atomic Spin · 0 upvotes · 0 comments --- Tags: [#javascript](https://daily.dev/tags/javascript), [#ai-coding](https://daily.dev/tags/ai-coding), [#claude-code](https://daily.dev/tags/claude-code), [#express](https://daily.dev/tags/express) [View this post on daily.dev](https://daily.dev/posts/claude-code-refactoring-a-practical-workflow-tucugcesb) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"Claude Code Refactoring: A Practical Workflow","url":"https://daily.dev/posts/claude-code-refactoring-a-practical-workflow-tucugcesb","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/claude-code-refactoring-a-practical-workflow-tucugcesb"},"datePublished":"2026-06-24T20:49:23.452Z","dateModified":"2026-09-14T07:59:49.174Z","description":"A structured workflow for using Claude Code (Anthropic's agentic CLI tool) to safely refactor JavaScript code. The guide covers three phases: Read (map all...","image":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/2e49a2ab7ae10d15768449b8e8e43502?_a=AQAEuop","thumbnailUrl":"https://media.daily.dev/image/upload/f_auto,q_auto/v1/posts/2e49a2ab7ae10d15768449b8e8e43502?_a=AQAEuop","isAccessibleForFree":true,"articleSection":"SitePoint","inLanguage":"en","publisher":{"@type":"Organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180}},"author":{"@type":"Organization","name":"SitePoint","logo":"https://media.daily.dev/image/upload/t_logo,f_auto/v1/logos/sitepoint","url":"https://daily.dev/sources/sitepoint"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/claude-code-refactoring-a-practical-workflow-tucugcesb","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":0},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"javascript,ai-coding,claude-code,express","timeRequired":"PT17M"} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"SitePoint","item":"https://daily.dev/sources/sitepoint"},{"@type":"ListItem","position":3,"name":"Claude Code Refactoring: A Practical Workflow"}]} {"@context":"https://schema.org","@type":"FAQPage","@id":"https://daily.dev/posts/claude-code-refactoring-a-practical-workflow-tucugcesb#faq","mainEntity":[{"@type":"Question","name":"How do I stop Claude Code from making unwanted edits while it's just analyzing my code?","acceptedAnswer":{"@type":"Answer","text":"Use a read-before-changing pattern: explicitly instruct Claude Code in the prompt not to modify any files, and reinforce this in a CLAUDE.md file with a rule requiring an approved plan before execution. Neither layer is a guaranteed hard stop, so verify compliance afterward with git diff --name-only, which should return no output if nothing was touched. Developers hardening their AI refactoring workflow can compare approaches like this on daily.dev."}},{"@type":"Question","name":"How many files should I let an AI coding agent refactor in a single session?","acceptedAnswer":{"@type":"Answer","text":"Cap a session at roughly 5 files or fewer, or keep the total token count of in-scope files under about 40% of the model's context limit. Beyond that, agentic tools like Claude Code tend to produce inconsistent edits, such as updating an import in one file but missing the same import elsewhere; larger refactors should be split into sequential read-map-plan-execute cycles. Teams scoping AI-assisted refactors can find practical limits like this on daily.dev."}},{"@type":"Question","name":"What is a CLAUDE.md file used for in Claude Code?","acceptedAnswer":{"@type":"Answer","text":"It is a project-root configuration file, with a case-sensitive uppercase filename on Linux and macOS, that Claude Code reads to pick up session-level instructions such as which files are in scope for changes, which files are read-only, and project context like the runtime, framework, and test runner. It is not enforced by the tool itself, so changes should still be verified with git diff. Developers setting project rules for AI coding agents can dig into examples like this on daily.dev."}}]} ```