Migration Toolkit

Turns scary codebase migrations into structured, step-by-step processes. Covers framework upgrades (React, Next.js, Rails, Django), dependency replacements (moment to dayjs, request to axios), import path changes, database schema migrations, and pattern transformations like CommonJS to ESM or REST to GraphQL.

Includes: automated scope assessment, phased migration plans, safe pattern replacement with preview-before-apply, verification checklists (build, types, tests, lint, bundle size), rollback procedures, and common migration recipes for the most frequent upgrade paths.

Every step is reversible. Every change is previewed before applied. No cowboy migrations.