What is the Refactor Legacy Code prompt?

The Refactor Legacy Code prompt is a professionally crafted AI prompt template designed for claude-opus-4 to help you refactor legacy code. It's optimized for Coding & Development use cases and includes customizable variables for personalization.

How do I use the Refactor Legacy Code prompt?

To use this prompt: 1) Copy the prompt text using the copy button, 2) Customize any variables in brackets like [YOUR_INPUT] with your specific details, 3) Paste into claude-opus-4, and 4) Review and iterate on the output as needed.

Is the Refactor Legacy Code prompt free to use?

Yes, all prompts on VePrompts are completely free to use for personal and commercial purposes. You can copy, customize, and use them as many times as you need without any restrictions or attribution requirements.

Does the Refactor Legacy Code prompt work with other AI models?

While optimized for claude-opus-4, this prompt is designed to work with most major AI models including ChatGPT, Claude, Gemini, and others. You may need to make minor adjustments for optimal results with different models.

claude-opus-4 Coding & Development

While optimized for claude-opus-4, this prompt is compatible with most major AI models.

Refactor Legacy Code

Modernize old code while preserving functionality — improve structure, naming, and performance.

Prompt Health: 100%

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Est. 221 tokens

# Refactor Legacy Code **Best model:** Claude 4 Opus **Category:** Coding & Development **Tags:** refactoring, legacy code, maintenance, clean code ## Description Modernize old code while preserving functionality — improve structure, naming, and performance. ## Prompt Refactor this legacy code. Goals: 1. IMPROVE READABILITY: Better naming, smaller functions, clear flow. 2. REDUCE COMPLEXITY: Extract methods, remove nesting, simplify conditionals. 3. MODERNIZE: Use current language features and patterns. 4. ADD TYPES: If TypeScript or typed language, add proper types. 5. ADD TESTS: Suggest 3-5 unit tests for the refactored code. 6. DOCUMENT: Add docstrings/comments explaining 'why' not 'what'. Preserve all existing functionality. Do not change behavior unless there's a bug. Show before/after comparison. CODE: [CODE] LANGUAGE: [LANGUAGE] FRAMEWORK: [FRAMEWORK]

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