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How AI Automated My Astro 4 to Astro 5 Migration: A Real-World Example

#ai #cursor #astro

Upgrading dependencies can feel overwhelming, especially when a big update like Astro 4 to Astro 5 brings major breaking changes. After my vacation, I faced 22 outdated packages on my Astro blog. Instead of tackling them all manually, I let AI handle the entire migration process — including the challenging Content Layer redesign in Astro 5.

What you'll learn

✅ How to prepare and categorize dependency updates by risk level

✅ Tackling Astro 5’s new Content Layer API and migration challenges

✅ Adapting your content collections and rendering code for Astro 5

✅ Managing routing changes like switching from slug to id

✅ Handling complex TypeScript errors pragmatically during migration

A taste of what's covered

One major challenge was replacing the old post.render() rendering method with Astro 5’s new Content Layer API. The AI discovered that instead of rendering with a method, you now access the rendered HTML directly:

// Old way in Astro 4
const { Content } = await post.render();

// New way in Astro 5
const renderedHTML = post.rendered?.html;
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The migration also meant updating routing logic to use id instead of slug in some contexts:

// Before
{featuredPosts.map(({ data, slug }) => (
  <Card href={`/posts/${slug}/`} frontmatter={data} />
))}

// After
{featuredPosts.map(({ data, id }) => (
  <Card href={`/posts/${id}/`} frontmatter={data} />
))}
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Conclusion

This real migration shows how AI can help automate complex upgrades and navigate tricky API changes — saving you time and headaches. Want to see the full step-by-step process and lessons learned?

👉 Read the full article here: https://www.56kode.com/posts/automated-astro-dependencies-update-cursor-claude/

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