Let Claude Upgrade Your Dependencies and Fix the Breaking Changes
Major version upgrades are the tasks everyone postpones because they're tedious and risky. Claude Code can handle the whole process — it knows the breaking changes and can find every affected line in your project.
Upgrade React from v17 to v18. Read the migration guide, update package.json,
fix all breaking changes in my components, and run the tests.
Claude bumps the version, installs the new package, then systematically finds and updates every piece of code affected by the breaking changes. It doesn't just find-and-replace deprecated APIs — it understands the new patterns and rewrites your code to match.
This works for all kinds of dependency upgrades:
# Framework upgrades
Upgrade Laravel from 10 to 11. Follow the official upgrade guide.
Update config files, middleware, and any deprecated method calls.
# Build tool migrations
Migrate from Webpack 4 to Vite. Update the config, fix import paths,
and handle any plugin replacements.
# Language version bumps
Update our TypeScript config from 4.x to 5.x. Fix any new type errors
and adopt the new satisfies operator where appropriate.
# ORM upgrades
Upgrade Prisma from v4 to v5. Update the schema, fix the client API
changes, and regenerate the client.
For maximum safety, do it in two passes:
# First pass: audit
I want to upgrade Express from v4 to v5. Without making any changes,
list every file and line that would need to change. Show me the scope.
# Second pass: execute
Looks manageable. Go ahead and make all the changes, then run the test suite.
The first pass gives you a clear picture of the blast radius before any code is touched. If the scope is too large, you can break it into smaller steps.
Dependency upgrades are really just "find every breaking change and fix it" — that's exactly what Claude Code does best.
via Claude Code
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Set up Claude Code as an automated reviewer in your CI pipeline — on every pull request, it reads the diff, checks for bugs, security issues, missing tests, and convention violations, then posts its findings as a PR comment. Your human reviewers get a head start because the obvious issues are already flagged before they look.
Before deploying, tell Claude to read your project — migrations, environment variables, queue workers, scheduled tasks, caching, third-party integrations — and generate a deployment checklist that's specific to your app. Not a generic "did you run migrations?" list, but one that knows YOUR infrastructure and catches the things YOUR deploy can break.
Instead of writing a README from memory or copying a template, tell Claude to read your project and generate one that's actually accurate — real setup instructions from your config, real architecture from your directory structure, real API examples from your routes, and real prerequisites from your dependency files.