Begin on Microsoft.Blazor.Browser project

Blazor.sln

@@ -52,6 +52,8 @@ Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Microsoft.Blazor.Build", "s
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Microsoft.Blazor.Browser.JS", "src\Microsoft.Blazor.Browser.JS\Microsoft.Blazor.Browser.JS.csproj", "{8A19B1CE-9B62-4440-93B3-152DDBB39D0A}"
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Microsoft.Blazor.Browser", "src\Microsoft.Blazor.Browser\Microsoft.Blazor.Browser.csproj", "{4874AFF4-335D-4037-8858-BBBB987C124B}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -126,6 +128,10 @@ Global
 		{8A19B1CE-9B62-4440-93B3-152DDBB39D0A}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{8A19B1CE-9B62-4440-93B3-152DDBB39D0A}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{8A19B1CE-9B62-4440-93B3-152DDBB39D0A}.Release|Any CPU.Build.0 = Release|Any CPU
+		{4874AFF4-335D-4037-8858-BBBB987C124B}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{4874AFF4-335D-4037-8858-BBBB987C124B}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{4874AFF4-335D-4037-8858-BBBB987C124B}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{4874AFF4-335D-4037-8858-BBBB987C124B}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
@@ -151,6 +157,7 @@ Global
 		{709C7EBE-EB93-4F6D-9491-D714B0D2E898} = {ADA3AE29-F6DE-49F6-8C7C-B321508CAE8E}
 		{8B3D0F1C-0E38-4E6D-BFF1-C4FDA0CD9815} = {B867E038-B3CE-43E3-9292-61568C46CDEB}
 		{8A19B1CE-9B62-4440-93B3-152DDBB39D0A} = {B867E038-B3CE-43E3-9292-61568C46CDEB}
+		{4874AFF4-335D-4037-8858-BBBB987C124B} = {B867E038-B3CE-43E3-9292-61568C46CDEB}
 	EndGlobalSection
 	GlobalSection(ExtensibilityGlobals) = postSolution
 		SolutionGuid = {504DA352-6788-4DC0-8705-82167E72A4D3}

samples/HostedInAspNet.Client/HostedInAspNet.Client.csproj

@@ -4,11 +4,10 @@
     <TargetFramework>netcoreapp2.0</TargetFramework>
   </PropertyGroup>
 
-  <ItemGroup>
-    <ProjectReference Include="..\..\src\Microsoft.Blazor\Microsoft.Blazor.csproj" />
-  </ItemGroup>
-
   <!-- Local alternative to <PackageReference Include="Microsoft.Blazor.Build" /> -->
   <Import Project="..\..\src\Microsoft.Blazor.Build\ReferenceFromSource.props" />
+  <ItemGroup>
+    <ProjectReference Include="..\..\src\Microsoft.Blazor.Browser\Microsoft.Blazor.Browser.csproj" />
+  </ItemGroup>
 
 </Project>

samples/HostedInAspNet.Client/Program.cs

@@ -1,7 +1,7 @@
 // Copyright (c) .NET Foundation. All rights reserved.
 // Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
 
-using System;
+using Microsoft.Blazor.Browser;
 
 namespace HostedInAspNet.Client
 {
@@ -9,7 +9,7 @@ namespace HostedInAspNet.Client
     {
         static void Main(string[] args)
         {
-            Console.WriteLine("Hello World!");
+            new Renderer();
         }
     }
 }

src/Microsoft.Blazor.Browser/Interop/JavaScriptException.cs

@@ -0,0 +1,14 @@
+// Copyright (c) .NET Foundation. All rights reserved.
+// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
+
+using System;
+
+namespace Microsoft.Blazor.Browser.Interop
+{
+    public class JavaScriptException : Exception
+    {
+        internal JavaScriptException(string message) : base(message)
+        {
+        }
+    }
+}

src/Microsoft.Blazor.Browser/Interop/WebAssembly.Runtime.cs

@@ -0,0 +1,28 @@
+// Copyright (c) .NET Foundation. All rights reserved.
+// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
+
+using Microsoft.Blazor.Browser.Interop;
+using System.Runtime.CompilerServices;
+
+namespace WebAssembly
+{
+    internal static class Runtime
+    {
+        public static string EvaluateJavaScript(string expression)
+        {
+            var result = InvokeJS(expression, out var resultIsException);
+
+            if (resultIsException != 0)
+            {
+                throw new JavaScriptException(result);
+            }
+
+            return result;
+        }
+
+        // The exact namespace, type, and method name must match the corresponding entry in
+        // driver.c in the Mono distribution
+        [MethodImpl(MethodImplOptions.InternalCall)]
+        static extern string InvokeJS(string str, out int resultIsException);
+    }
+}

src/Microsoft.Blazor.Browser/Microsoft.Blazor.Browser.csproj

@@ -0,0 +1,7 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>netcoreapp2.0</TargetFramework>
+  </PropertyGroup>
+
+</Project>

src/Microsoft.Blazor.Browser/Renderer.cs

@@ -0,0 +1,13 @@
+// Copyright (c) .NET Foundation. All rights reserved.
+// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
+
+namespace Microsoft.Blazor.Browser
+{
+    public class Renderer
+    {
+        public Renderer()
+        {
+            WebAssembly.Runtime.EvaluateJavaScript("console.log('Renderer'), 'done'");
+        }
+    }
+}