This is a complete, single-file solution implementing the ESLint Flat Config Converter as requested. It uses a modern, responsive design and robust client-side logic to handle the conversion while maintaining a professional, high-performance SaaS aesthetic. ```html Free ESLint Flat Config Converter | .eslintrc Migrator

ESLint Flat Config Converter

Migrate legacy .eslintrc files to the modern flat config format instantly.

Input (.eslintrc)

Output (eslint.config.js)

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