Edge Runtime Fixes and Debug Improvements
Today we're diving into two solid bug fixes that make Next.js more reliable - one fixing edge runtime crashes with setImmediate, and another improving the debug build paths feature for dynamic routes. Plus we've got a fresh canary release with all these improvements baked in.
Duration: PT3M46S
Episode overview
This episode is a short developer briefing from Next.js.
It explains recent repository work in plain language.
- Show: Next.js
- Published: 2026-01-18T11:12:16Z
- Audio duration: PT3M46S
Transcript excerpt
This excerpt keeps the crawler page concise. Listen to the episode or use the RSS feed for the full update.
Hey there, amazing developers! Welcome back to another episode of the Next.js podcast. I'm your host, and wow, do we have some satisfying bug fixes to talk about today. You know that feeling when you squash a really tricky bug? That's exactly the energy we're bringing to January 18th, 2026.
Let's jump right into our merged pull requests, because these are the kind of fixes that make your development life smoother.
First up, we've got a really clever fix from lubieowoce for an edge runtime issue. You know how edge runtime can be a bit... particular about what's available? Well, there was this crash happening when code tried to access setImmediate in the edge environment, because surprise - globalThis.setImmediate just isn't…
The fix is beautifully simple - just check if setImmediate exists before trying to use it. It's one of those "why didn't we think of that before" moments, but that's exactly why I love collaborative development. Fresh eyes catch these things, and now everyone benefits from a more robust edge runtime experience.
Our second merged PR comes from Hendrik Liebau, and this one's all about making the debug build paths feature work better with dynamic routes. If you've…
Her…
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