feat: Add 4GB memory configuration detection support

Readme.md

@@ -857,9 +857,22 @@ The bootstrapper provides a set of environment variables that reflect the config
 - `UNO_BOOTSTRAP_MONO_PROFILED_AOT`, which specifies if the package was built using a PG-AOT profile.
 - `UNO_BOOTSTRAP_APP_BASE`, which specifies the location of the app content from the base. Useful to reach assets deployed using the `UnoDeploy="Package"` mode.
 - `UNO_BOOTSTRAP_WEBAPP_BASE_PATH`, which specifies the base location of the webapp. This parameter is used in the context of deep-linking (through the `WasmShellWebAppBasePath` property). This property must contain a trailing `/` and its default is `./`.
+- `UNO_BOOTSTRAP_EMSCRIPTEN_MAXIMUM_MEMORY`, which optionally specifies the maximum memory available to the WebAssembly module. 
 
 Those variables can be accessed through [Environment.GetEnvironmentVariable](https://docs.microsoft.com/en-us/dotnet/api/system.environment.getenvironmentvariable).
 
+### 4GB memory support
+
+The support for 4GB memory space is available by adding the following configuration:
+```xml
+<ItemGroup>
+	<WasmShellExtraEmccFlags Include="-s MAXIMUM_MEMORY=4GB"/>
+</ItemGroup>
+```
+The configuration can also be detected at runtime using the `UNO_BOOTSTRAP_EMSCRIPTEN_MAXIMUM_MEMORY` environment variable, which will be set to `4GB` once set.
+
+See this [blog post from the v8 team](https://v8.dev/blog/4gb-wasm-memory) for more information.
+
 ### Dependency management
 The Uno Bootstrapper uses RequireJS for dependency management, allowing for dependencies to be resolved in a stable manner. 
 

src/Uno.Wasm.Bootstrap/ShellTask.cs

@@ -1646,6 +1646,12 @@ private void GenerateConfig()
 				AddEnvironmentVariable("UNO_BOOTSTRAP_APP_BASE", _remoteBasePackagePath);
 				AddEnvironmentVariable("UNO_BOOTSTRAP_WEBAPP_BASE_PATH", WebAppBasePath);
 
+				if (ExtraEmccFlags?.Any(f => f.ItemSpec?.Contains("MAXIMUM_MEMORY=4GB") ?? false) ?? false)
+				{
+					// Detects the use of the 4GB flag: https://v8.dev/blog/4gb-wasm-memory
+					AddEnvironmentVariable("UNO_BOOTSTRAP_EMSCRIPTEN_MAXIMUM_MEMORY", "4GB");
+				}
+
 				if (EnableLogProfiler)
 				{
 					AddEnvironmentVariable("UNO_BOOTSTRAP_LOG_PROFILER_OPTIONS", LogProfilerOptions);

src/Uno.Wasm.SampleNet6.LogProfiler/Uno.Wasm.SampleNet6.LogProfiler.csproj

@@ -22,6 +22,10 @@
 		<PackageReference Include="Microsoft.Extensions.Logging.Abstractions" Version="1.1.1" />
 	</ItemGroup>
 
+	<ItemGroup>
+		<WasmShellExtraEmccFlags Include="-s MAXIMUM_MEMORY=4GB"/>
+	</ItemGroup>
+
 	<Import Project="..\Uno.Wasm.Sample\Uno.Wasm.Sample.projitems" Label="Shared" />
 
 	<Import Project="..\Uno.Wasm.Sample\sample.common.props" />