feat: cloudflare workers support

.github/workflows/ci.yaml

@@ -14,6 +14,9 @@ jobs:
           dotnet-version: | 
             8.0.x
             9.0.x
+            10.0.x
+      - name: Installl WASM workloads
+        run: dotnet workload install wasm-tools --skip-manifest-update
       - name: Install dependencies
         run: dotnet restore
       - name: Locate MSBuild with vswhere
@@ -36,13 +39,24 @@ jobs:
           & $env:MSBUILD AspNetCore.sln /p:Configuration=Debug /p:Platform="Any CPU"
       - name: Test Zapto.AspNetCore.NetFx
         run: dotnet test --no-restore --no-build --verbosity normal tests/Zapto.AspNetCore.NetFx.Tests/Zapto.AspNetCore.NetFx.Tests.csproj
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: '22'
+      - name: Install wrangler
+        run: npm install -g wrangler
+      - name: Test Zapto.AspNetCore.Wasm
+        run: dotnet test --verbosity normal tests/Zapto.AspNetCore.Wasm.Tests/Zapto.AspNetCore.Wasm.Tests.csproj
       - name: Publish
         uses: GerardSmit/publish-nuget@v4.0.2
         if: github.ref == 'refs/heads/main'
         with:
           NUGET_KEY: ${{secrets.NUGET_API_KEY}}
           VERSION_FILE_PATH: src/Directory.Build.props
           PROJECT_FILE_PATH: |
+            src/Zapto.AspNetCore.Wasm.Interop/Zapto.AspNetCore.Wasm.Interop.csproj
+            src/Zapto.AspNetCore.Wasm/Zapto.AspNetCore.Wasm.csproj
             src/Zapto.AspNetCore.Polyfill/Zapto.AspNetCore.Polyfill.csproj
             src/Zapto.AspNetCore.NetFx/Zapto.AspNetCore.NetFx.csproj
+            sdk/Zapto.AspNetCore.CloudFlare.SDK/Zapto.AspNetCore.CloudFlare.SDK.csproj
 

Directory.Build.props

@@ -0,0 +1,14 @@
+<Project>
+
+    <PropertyGroup>
+        <Version>1.0.0-alpha.2</Version>
+        <PackageVersion>1.0.0-alpha.2</PackageVersion>
+        <Authors>Zapto</Authors>
+        <RepositoryUrl>https://github.com/zapto-dev/AspNetCore</RepositoryUrl>
+        <Copyright>Copyright © 2025 Zapto</Copyright>
+        <PackageTags>zapto, aspnetcore</PackageTags>
+        <PackageProjectUrl>https://github.com/zapto-dev/AspNetCore</PackageProjectUrl>
+        <PackageLicenseExpression>MIT</PackageLicenseExpression>
+    </PropertyGroup>
+
+</Project>

nuget.config

@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="utf-8"?>
+<configuration>
+  <packageSources>
+    <clear />
+    <add key="dotnet-public" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-public/nuget/v3/index.json" />
+    <add key="dotnet-experimental" value="https://pkgs.dev.azure.com/dnceng/public/_packaging/dotnet-experimental/nuget/v3/index.json" />
+    <add key="nuget" value="https://api.nuget.org/v3/index.json" />
+  </packageSources>
+</configuration>

sandbox/WasmApp.Library/Example.wasmlib.js

@@ -0,0 +1,8 @@
+/**
+ * Greets a person by name.
+ * @param {string} name - The name of the person to greet.
+ * @returns {Promise<string>} A greeting message.
+ */
+export function greet(name) {
+    return Promise.resolve(`Greetings from Example, ${name}!`);
+}

sandbox/WasmApp.Library/NativeMethods.cs

@@ -0,0 +1,13 @@
+using Zapto.AspNetCore.Wasm.Interop;
+
+namespace WasmApp.Library;
+
+public static partial class NativeMethods
+{
+    /// <summary>
+    /// Calls the JavaScript greet function from the Example module.
+    /// WASM import: Example_greet(byte* namePtr, int nameLen, int callbackId)
+    /// </summary>
+    [WasmLibraryImport("greet", "Example")]
+    public static partial Task<string?> GreetAsync(string name);
+}

sandbox/WasmApp.Library/WasmApp.Library.csproj

@@ -0,0 +1,23 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+    <PropertyGroup>
+        <TargetFramework>net10.0</TargetFramework>
+        <RuntimeIdentifier>browser-wasm</RuntimeIdentifier>
+        <Nullable>enable</Nullable>
+        <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
+        <ImplicitUsings>enable</ImplicitUsings>
+    </PropertyGroup>
+
+    <ItemGroup>
+        <ProjectReference Include="..\..\src\Zapto.AspNetCore.Wasm.Interop\Zapto.AspNetCore.Wasm.Interop.csproj" />
+        <ProjectReference Include="..\..\src\Zapto.AspNetCore.Wasm.SourceGenerator\Zapto.AspNetCore.Wasm.SourceGenerator.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false" />
+    </ItemGroup>
+
+    <ItemGroup>
+        <Content Include="Example.wasmlib.js">
+            <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+            <CopyToPublishDirectory>PreserveNewest</CopyToPublishDirectory>
+        </Content>
+    </ItemGroup>
+
+</Project>

sandbox/WasmApp/Program.cs

@@ -0,0 +1,44 @@
+using System.Text.Json.Serialization;
+using Microsoft.AspNetCore.Builder;
+using Microsoft.AspNetCore.Hosting;
+using Microsoft.AspNetCore.Http;
+using Microsoft.Extensions.DependencyInjection;
+using WasmApp.Library;
+
+var builder = WebApplication.CreateBuilder(args);
+
+builder.Services.AddRouting();
+
+builder.Services.ConfigureHttpJsonOptions(options =>
+{
+    options.SerializerOptions.TypeInfoResolverChain.Insert(0, AppJsonContext.Default);
+});
+
+var app = builder.Build();
+
+app.UseRouting();
+
+app.MapGet("/", () => "Hello from ASP.NET Core on Cloudflare Workers!");
+
+app.MapGet("/api/time", () =>
+{
+    return Results.Json(new TimeResponse(DateTime.UtcNow.ToString("O")), AppJsonContext.Default.TimeResponse);
+});
+
+app.MapGet("/api/greet/{name}", (string name) => $"Hello, {name}!");
+
+app.MapGet("/library/greet/{name}", async (string name) => await NativeMethods.GreetAsync(name));
+
+app.MapPost("/api/echo", async context =>
+{
+    using var reader = new StreamReader(context.Request.Body);
+    var body = await reader.ReadToEndAsync(context.RequestAborted);
+    await context.Response.WriteAsync($"Echo: {body}");
+});
+
+await app.RunAsync();
+
+internal record TimeResponse([property: JsonPropertyName("time")] string Time);
+
+[JsonSerializable(typeof(TimeResponse))]
+internal partial class AppJsonContext : JsonSerializerContext;

sandbox/WasmApp/WasmApp.csproj

@@ -0,0 +1,18 @@
+<Project Sdk="Microsoft.NET.Sdk">
+    <!-- Import SDK props -->
+    <Import Project="..\..\sdk\Zapto.AspNetCore.CloudFlare.SDK\Sdk\Sdk.props" />
+
+    <PropertyGroup>
+        <TargetFrameworks>net10.0-browser;net10.0</TargetFrameworks>
+
+        <!-- For local development, reference the project directly -->
+        <ZaptoWasmUseProjectReference>true</ZaptoWasmUseProjectReference>
+    </PropertyGroup>
+
+    <ItemGroup>
+        <ProjectReference Include="..\WasmApp.Library\WasmApp.Library.csproj" />
+    </ItemGroup>
+
+    <!-- Import SDK targets -->
+    <Import Project="..\..\sdk\Zapto.AspNetCore.CloudFlare.SDK\Sdk\Sdk.targets" />
+</Project>