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Shopify shipped Hydrogen 2026.4.0 on April 17, 2026. Most of the release notes celebrate React Router 7.9.2 middleware support, Miniflare v3, and ten new Cookbook recipes. Fine — but buried in PRs #3649 and #3621 are three breaking changes that will ...

When I first started building React applications, I thought routing would be simple. Just show different components based on the URL, right? Then I had to implement protected routes, nested layouts, route parameters, and handle 404 pages. That's when...
