Engineering & Dev
4 steps
5 tools
Codebase Migration
Migrate or refactor a large codebase -- framework upgrades, language migrations, API changes. Use AI to plan the migration, execute bulk changes, and verify correctness.
developers
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Step 1
Understand the codebase
Use an AI editor's chat to explore the codebase, understand dependencies, and map out what needs to change
Input: Existing codebase + migration goal
Output: Migration plan with affected files and dependencies
Migration plan with affected files and dependencies
Step 2
Research the target
Search for migration guides, breaking changes, and best practices for the target framework or version
Input: Migration goal (e.g., 'React 17 to React 19')
Output: Migration guide, known issues, and patterns
Migration guide, known issues, and patterns
Step 3
Execute bulk changes
Use agentic multi-file editing to apply the migration across the codebase -- renaming, API changes, pattern updates
Input: Migration plan + codebase
Output: Migrated codebase
Migrated codebase
Step 4
Verify and fix
Run tests, fix failures with AI assistance, and use code review to catch anything missed
Input: Migrated codebase + test results
Output: Verified, passing codebase
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