v5.0.1

Released: 2026-10-24

Bug Fixes

Islands (Rolldown, the default bundler): a lazy import() chunk no longer imports the unfingerprinted ./islands.js entry. Production publishes only islands-<hash>.js, so a lazily loaded island that shared exported code with the eagerly loaded islands failed in the browser with GET /assets/islands.js 404 and Failed to fetch dynamically imported module (1d4f53282, fixes #4444). Code shared between the entry and a lazy chunk now goes to an islands-chunk-[hash] common chunk, the same shape esbuild produces. Affected sites can drop the ZFB_BUNDLER=esbuild workaround. Asset hashes may change for sites with that shape.