Next.js: New CLI Tool and Backend Improvements
The Next.js team released 9 commits on May 13th, 2026, featuring a new internal CLI command for analyzing route bundle sizes and significant Turbopack backend improvements for better performance and reliability.
Duration: PT2M11S
Episode overview
This episode is a short developer briefing from Next.js.
It explains recent repository work in plain language.
- Show: Next.js
- Published: 2026-05-13T10:02:07Z
- Audio duration: PT2M11S
Transcript excerpt
This excerpt keeps the crawler page concise. Listen to the episode or use the RSS feed for the full update.
Good morning, I'm bringing you the Next.js development update for May 13th, 2026.
Tobias Koppers merged a substantial addition with the new `next internal static-routes-info` CLI command. This tool analyzes built Next.js applications to report per-route bundle sizes across six categories: client JavaScript, client CSS, client source maps, server bundled JavaScript, server unbundled files, and…
Tim Neutkens merged a large test modernization effort, converting existing `createNext()` usage to the newer `nextTestSetup()` across 135 test files. This improves test consistency and maintainability.
Public Theta merged a fix for Turbopack's worker threads URL resolution. The issue affected Next.js applications using the pattern `new Worker(new URL('./worker.ts', import.meta.url))`, which was failing to resolve relative URLs correctly.
Tobias Koppers also merged critical Turbopack backend improvements, including enforcement of root attributes for consistent reads and fixing a potential deadlock between storage map and snapshots operations. These changes strengthen the task system's reliability.
Josh Story merged an important fix for ISR revalidation where concurrent requests with different…
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