DefineStaticWebAssets.ReadOrCreateCache opens the *.dswa.cache.json
files under obj/.../ via File.OpenRead with no try/catch, so under
parallel solution builds a sharing-violation / TOCTOU race on the cache
file escapes as MSB4018 and fails the whole build (seen on
Yavsc.Blogs during the rc15 solution build).
Set StaticWebAssetsCacheDefineStaticWebAssetsEnabled=false so
CacheManifestPath is empty and ReadOrCreateCache short-circuits to a
no-file-I/O path. The cache is a pure build-speed optimization; no
effect on output correctness, only on incremental rebuild speed of the
wwwroot-light web projects.
Verified: Yavsc.Api (transitive web deps) and Yavsc.Blogs.Tests build
clean, and zero *.dswa.cache.json files are produced.
Refs:
https://source.dot.net/Microsoft.NET.Sdk.StaticWebAssets.Tasks/DefineStaticWebAssets.Cache.cs.htmlhttps://github.com/dotnet/sdk/issues/49039
Co-Authored-By: Claude <noreply@anthropic.com>
