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Legacy Code Modernizer and Refactoring Agent

Converts deprecated or legacy code into modern, clean, and performant patterns while preserving original functionality.

Use Case

Use this when inheriting tech-debt-heavy codebases, updating framework versions, or preparing legacy apps for scaling.

AI Prompt

Act as a senior software architect specializing in code modernization. Refactor the following legacy code snippet: [insert code here]. Upgrade it to use the latest language specifications of [insert language/framework and version, e.g., modern ES6+ JavaScript, Python 3.11, or Java 21]. Ensure it uses modern design patterns, eliminates deprecated APIs, optimizes performance, and maintains exact logic parity. Provide a clear list of changes made and why.

How to Use

1Paste the legacy code block in the placeholder.
2Specify the target language version or framework.
3Run the prompt and review the architectural differences.

Example Output

I have refactored your legacy ES5 JavaScript to ES11. The var keywords have been replaced with const and let to ensure block scoping. The old callback system has been fully migrated to modern async-await syntax utilizing Promises, which drastically improves code readability and simplifies error handling using standard try-catch blocks. Additionally, all manual string concatenations are now template literals.

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