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size-limit report 📦Compared: 837f086 (PR test merge using develop at 3cb76b2) Against: 3cb76b2 (develop) · base run #63878 ✅ Baseline matches: this diff contains only this PR's changes.
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opennextjs/opennextjs-cloudflare#1356 shipped in @opennextjs/cloudflare 1.20.12, so restore the canary variant on the Cloudflare runtime and unpin the latest variant from Next.js 16.3. Fixes #23541 Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
OpenNext's Turbopack runtime patch breaks on Next.js 16.5 canary. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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This raises the
@opennextjs/cloudflarefloor of thenextjs-16app to^1.20.12. That release contains the fix for opennextjs/opennextjs-cloudflare#1356, which is why the Cloudflare variants were pinned to 16.3 before instead or latest.Note that the canary variant is still not re-enabled, because there seems to be a bug in
@opennextjs/cloudflare. See below for details on what may be happening there.Canary is still failing (follow up work needed):
This PR originally also restored the
nextjs-16 (cloudflare, canary)variant, but that variant currently fails nearly every test with a 500, so it is not re-added yet.Workerd can't
requiredynamic paths, so OpenNext rewrites the Turbopack runtime'srequire(resolved)chunk loads into a call to afunction requireChunk(chunkPath)it appends to[turbopack]_runtime.js. Next.js 16.5 canary (seen with16.5.0-canary.28and@opennextjs/cloudflare@1.20.13) now declares its ownfunction requireChunk(chunkPath, sourceModuleId)in that file. It is used for async chunk loads and also installs the chunk's module factories. Both declarations live in the same scope, so OpenNext's wins. Async chunk loads then onlyrequirethe chunk without registering its modules. Ourinstrumentation.tsloadssentry.server.configwith a dynamicimport(), so every request fails withAn error occurred while loading instrumentation hook: Module … was instantiated … but the module factory is not available, which OpenNext turns into a generic 500. Renaming OpenNext's injected helper fixes it: with that change, the wholenextjs-16Cloudflare suite passes locally on canary. Next.js 16.4 has norequireChunkof its own, which is why thelatestvariant passes.The canary variant can come back once OpenNext ships a fix for this.
Ref #23541