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[browser] Make WASM framework asset CopyToOutputDirectory configurable #127286

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Merged
maraf merged 1 commit into from
Apr 23, 2026
+13 −3
Merged

[browser] Make WASM framework asset CopyToOutputDirectory configurable #127286

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4 changes: 4 additions & 0 deletions eng/testing/tests.browser.targets
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Original file line number Diff line number Diff line change
Expand Up @@ -51,6 +51,10 @@
<UseSystemResourceKeys Condition="'$(UseSystemResourceKeys)' == ''">false</UseSystemResourceKeys>
<EventSourceSupport Condition="'$(EventSourceSupport)' == ''">true</EventSourceSupport>
<NullabilityInfoContextSupport Condition="'$(NullabilityInfoContextSupport)' == ''">true</NullabilityInfoContextSupport>

<!-- Library tests run directly from bin/ without the static web assets middleware,
so copy framework files to the output directory. See https://github.com/dotnet/runtime/issues/127257. -->
<_WasmFrameworkCopyToOutputDirectory>PreserveNewest</_WasmFrameworkCopyToOutputDirectory>
</PropertyGroup>
<PropertyGroup Condition="'$(RuntimeFlavor)' == 'CoreCLR'">
<WasmTestSupport>true</WasmTestSupport>
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12 changes: 9 additions & 3 deletions ...et/Microsoft.NET.Sdk.WebAssembly.Pack/build/Microsoft.NET.Sdk.WebAssembly.Browser.targets
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Expand Up @@ -354,6 +354,12 @@ Copyright (c) .NET Foundation. All rights reserved.
<PropertyGroup>
<_WasmBuildWebcilPath>$([MSBuild]::NormalizeDirectory($(IntermediateOutputPath), 'webcil'))</_WasmBuildWebcilPath>
<_WasmBuildTmpWebcilPath>$([MSBuild]::NormalizeDirectory($(IntermediateOutputPath), 'tmp-webcil'))</_WasmBuildTmpWebcilPath>
<!-- Controls whether WASM framework/webcil static web assets are copied to bin/wwwroot/_framework/
at build time. Defaults to 'Never' (assets stay in obj/fx/ and are served via the static web
assets middleware). Set to 'PreserveNewest' to copy them to the output directory — this is
required for scenarios that run the app from bin/ without the static web assets middleware
(e.g. in-tree library tests). -->
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<_WasmFrameworkCopyToOutputDirectory Condition="'$(_WasmFrameworkCopyToOutputDirectory)' == ''">Never</_WasmFrameworkCopyToOutputDirectory>
</PropertyGroup>

<ConvertDllsToWebcil Candidates="@(_BuildAssetsCandidates)" IntermediateOutputPath="$(_WasmBuildTmpWebcilPath)" OutputPath="$(_WasmBuildWebcilPath)" IsEnabled="$(_WasmEnableWebcil)" WebcilVersion="$(_WasmWebcilVersion)">
Expand Down Expand Up @@ -387,7 +393,7 @@ Copyright (c) .NET Foundation. All rights reserved.
SourceType="Computed"
AssetKind="Build"
AssetRole="Primary"
CopyToOutputDirectory="Never"
CopyToOutputDirectory="$(_WasmFrameworkCopyToOutputDirectory)"
CopyToPublishDirectory="Never"
FingerprintCandidates="$(_WasmFingerprintAssets)"
FingerprintPatterns="@(FingerprintPatterns);@(_WasmFingerprintPatterns)"
Expand All @@ -406,7 +412,7 @@ Copyright (c) .NET Foundation. All rights reserved.
SourceType="Framework"
AssetKind="Build"
AssetRole="Primary"
CopyToOutputDirectory="Never"
CopyToOutputDirectory="$(_WasmFrameworkCopyToOutputDirectory)"
CopyToPublishDirectory="Never"
FingerprintCandidates="$(_WasmFingerprintAssets)"
FingerprintPatterns="@(FingerprintPatterns);@(_WasmFingerprintPatterns)"
Expand Down Expand Up @@ -435,7 +441,7 @@ Copyright (c) .NET Foundation. All rights reserved.
during dotnet run — they are not copied to bin/wwwroot/_framework/ at build time. -->
<ItemGroup>
<_WasmMaterializedFrameworkAssets Update="@(_WasmMaterializedFrameworkAssets)"
AssetMode="All" CopyToOutputDirectory="Never" />
AssetMode="All" CopyToOutputDirectory="$(_WasmFrameworkCopyToOutputDirectory)" />
<WasmStaticWebAsset Include="@(_WasmMaterializedFrameworkAssets)" />
</ItemGroup>

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