diff --git a/blazor/samples/MonoSanityClient/InternalCalls.cs b/blazor/samples/MonoSanityClient/InternalCalls.cs
new file mode 100644
index 0000000000..0fb15337e8
--- /dev/null
+++ b/blazor/samples/MonoSanityClient/InternalCalls.cs
@@ -0,0 +1,25 @@
+// 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.Runtime.CompilerServices;
+
+namespace WebAssembly.JSInterop
+{
+    // This file is copied from https://github.com/dotnet/jsinterop/blob/master/src/Mono.WebAssembly.Interop/InternalCalls.cs
+    // so that MonoSanityClient can directly use the same underlying interop APIs (because
+    // we're trying to observe the behavior of the Mono runtime itself, not JSInterop).
+
+    internal class InternalCalls
+    {
+        // The exact namespace, type, and method names must match the corresponding entries
+        // in driver.c in the Mono distribution
+
+        // We're passing asyncHandle by ref not because we want it to be writable, but so it gets
+        // passed as a pointer (4 bytes). We can pass 4-byte values, but not 8-byte ones.
+        [MethodImpl(MethodImplOptions.InternalCall)]
+        public static extern string InvokeJSMarshalled(out string exception, ref long asyncHandle, string functionIdentifier, string argsJson);
+
+        [MethodImpl(MethodImplOptions.InternalCall)]
+        public static extern TRes InvokeJSUnmarshalled<T0, T1, T2, TRes>(out string exception, string functionIdentifier, T0 arg0, T1 arg1, T2 arg2);
+    }
+}
diff --git a/blazor/samples/MonoSanityClient/MonoSanityClient.csproj b/blazor/samples/MonoSanityClient/MonoSanityClient.csproj
index 8d7ffa740d..72f20a8fc8 100644
--- a/blazor/samples/MonoSanityClient/MonoSanityClient.csproj
+++ b/blazor/samples/MonoSanityClient/MonoSanityClient.csproj
@@ -13,9 +13,4 @@
   <!-- Local alternative to <PackageReference Include="Microsoft.AspNetCore.Blazor.Build" /> -->
   <Import Project="..\..\..\src\Microsoft.AspNetCore.Components.Build\ReferenceFromSource.props" />
 
-  <ItemGroup>
-    <!-- Share the InternalCalls.cs source here so we get access to the same interop externs -->
-    <Compile Include="..\..\..\modules\jsinterop\src\Mono.WebAssembly.Interop\InternalCalls.cs" />
-  </ItemGroup>
-
 </Project>
diff --git a/build/SignToolData.json b/build/SignToolData.json
index 8c249e3738..e36f9b408e 100644
--- a/build/SignToolData.json
+++ b/build/SignToolData.json
@@ -53,6 +53,7 @@
     "Microsoft.Extensions.FileProviders.Physical.dll",
     "Microsoft.Extensions.FileSystemGlobbing.dll",
     "Microsoft.Extensions.Primitives.dll",
+    "Microsoft.JSInterop.dll",
     "Mono.Cecil.dll",
     "Mono.Cecil.Mdb.dll",
     "Mono.Cecil.Pdb.dll",
diff --git a/build/dependencies.props b/build/dependencies.props
index b40920679f..b46d82443a 100644
--- a/build/dependencies.props
+++ b/build/dependencies.props
@@ -16,6 +16,10 @@
     <TemplateBlazorPackageVersion>0.8.0-preview1-20181122.3</TemplateBlazorPackageVersion>
     <TemplateRazorDesignPackageVersion>2.1.2</TemplateRazorDesignPackageVersion>
     <RazorPackageVersion>2.1.0</RazorPackageVersion>
+    <MicrosoftAspNetCoreBlazorMonoPackageVersion>0.8.0-preview1-20181126.1</MicrosoftAspNetCoreBlazorMonoPackageVersion>
+
+    <!-- When updating this, ensure you also update Browser.JS/package.json to reference the corresponding version of @dotnet/jsinterop -->
+    <JSInteropPackageVersion>0.8.0-preview1-20181126.1</JSInteropPackageVersion>
   </PropertyGroup>
 
   <Import Project="$(DotNetPackageVersionPropsPath)" Condition=" '$(DotNetPackageVersionPropsPath)' != '' " />
diff --git a/src/Microsoft.AspNetCore.Components.Browser.JS/Microsoft.AspNetCore.Components.Browser.JS.csproj b/src/Microsoft.AspNetCore.Components.Browser.JS/Microsoft.AspNetCore.Components.Browser.JS.csproj
index cf51e80890..e0292e9698 100644
--- a/src/Microsoft.AspNetCore.Components.Browser.JS/Microsoft.AspNetCore.Components.Browser.JS.csproj
+++ b/src/Microsoft.AspNetCore.Components.Browser.JS/Microsoft.AspNetCore.Components.Browser.JS.csproj
@@ -12,16 +12,11 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <ProjectReference Include="..\..\blazor\src\Microsoft.AspNetCore.Blazor.BuildTools\Microsoft.AspNetCore.Blazor.BuildTools.csproj" PrivateAssets="all" ReferenceOutputAssembly="false" />
     <PackageReference Include="Microsoft.Extensions.FileProviders.Embedded" Version="$(AspNetCorePackageVersion)" />
     <WebpackInputs Include="**\*.ts" Exclude="node_modules\**" />
-    <WebpackInputs Include="..\..\modules\jsinterop\src\Microsoft.JSInterop.JS\src\**" />
   </ItemGroup>
 
-  <Import Project="..\..\blazor\src\Microsoft.AspNetCore.Blazor.BuildTools\BuildToolsExe.props" />
-
   <Target Name="EnsureNpmRestored" Condition="!Exists('node_modules')">
-    <Exec Command="$(BlazorBuildToolsExe) checknodejs -v 8.3.0" />
     <Message Importance="high" Text="Restoring dependencies using 'npm'. This may take several minutes..." />
     <Exec Command="npm install" />
   </Target>
diff --git a/src/Microsoft.AspNetCore.Components.Browser.JS/package-lock.json b/src/Microsoft.AspNetCore.Components.Browser.JS/package-lock.json
index 900f191d18..93ca3e202d 100644
--- a/src/Microsoft.AspNetCore.Components.Browser.JS/package-lock.json
+++ b/src/Microsoft.AspNetCore.Components.Browser.JS/package-lock.json
@@ -1,5 +1,5 @@
 {
-  "name": "blazor.host.client",
+  "name": "microsoft.aspnetcore.components.browser.js",
   "version": "0.0.1",
   "lockfileVersion": 1,
   "requires": true,
@@ -19,6 +19,12 @@
         "msgpack5": "4.2.0"
       }
     },
+    "@dotnet/jsinterop": {
+      "version": "0.1.1",
+      "resolved": "https://registry.npmjs.org/@dotnet/jsinterop/-/jsinterop-0.1.1.tgz",
+      "integrity": "sha512-/Y5f3rtzZ85y8ukBds6IHRgnu7zwlAxe/JhaqN8mvj/JPDA4AtfdNqjJBZuZJxLrP0k6+q4owx/DS7LyZWccFQ==",
+      "dev": true
+    },
     "@types/emscripten": {
       "version": "0.0.31",
       "resolved": "https://registry.npmjs.org/@types/emscripten/-/emscripten-0.0.31.tgz",
@@ -1533,23 +1539,21 @@
           "dev": true,
           "optional": true,
           "requires": {
-            "delegates": "^1.0.0",
-            "readable-stream": "^2.0.6"
+            "delegates": "1.0.0",
+            "readable-stream": "2.3.6"
           }
         },
         "balanced-match": {
           "version": "1.0.0",
           "bundled": true,
-          "dev": true,
-          "optional": true
+          "dev": true
         },
         "brace-expansion": {
           "version": "1.1.11",
           "bundled": true,
           "dev": true,
-          "optional": true,
           "requires": {
-            "balanced-match": "^1.0.0",
+            "balanced-match": "1.0.0",
             "concat-map": "0.0.1"
           }
         },
@@ -1562,20 +1566,17 @@
         "code-point-at": {
           "version": "1.1.0",
           "bundled": true,
-          "dev": true,
-          "optional": true
+          "dev": true
         },
         "concat-map": {
           "version": "0.0.1",
           "bundled": true,
-          "dev": true,
-          "optional": true
+          "dev": true
         },
         "console-control-strings": {
           "version": "1.1.0",
           "bundled": true,
-          "dev": true,
-          "optional": true
+          "dev": true
         },
         "core-util-is": {
           "version": "1.0.2",
@@ -1616,7 +1617,7 @@
           "dev": true,
           "optional": true,
           "requires": {
-            "minipass": "^2.2.1"
+            "minipass": "2.2.4"
           }
         },
         "fs.realpath": {
@@ -1631,14 +1632,14 @@
           "dev": true,
           "optional": true,
           "requires": {
-            "aproba": "^1.0.3",
-            "console-control-strings": "^1.0.0",
-            "has-unicode": "^2.0.0",
-            "object-assign": "^4.1.0",
-            "signal-exit": "^3.0.0",
-            "string-width": "^1.0.1",
-            "strip-ansi": "^3.0.1",
-            "wide-align": "^1.1.0"
+            "aproba": "1.2.0",
+            "console-control-strings": "1.1.0",
+            "has-unicode": "2.0.1",
+            "object-assign": "4.1.1",
+            "signal-exit": "3.0.2",
+            "string-width": "1.0.2",
+            "strip-ansi": "3.0.1",
+            "wide-align": "1.1.2"
           }
         },
         "glob": {
@@ -1647,12 +1648,12 @@
           "dev": true,
           "optional": true,
           "requires": {
-            "fs.realpath": "^1.0.0",
-            "inflight": "^1.0.4",
-            "inherits": "2",
-            "minimatch": "^3.0.4",
-            "once": "^1.3.0",
-            "path-is-absolute": "^1.0.0"
+            "fs.realpath": "1.0.0",
+            "inflight": "1.0.6",
+            "inherits": "2.0.3",
+            "minimatch": "3.0.4",
+            "once": "1.4.0",
+            "path-is-absolute": "1.0.1"
           }
         },
         "has-unicode": {
@@ -1667,7 +1668,7 @@
           "dev": true,
           "optional": true,
           "requires": {
-            "safer-buffer": "^2.1.0"
+            "safer-buffer": "2.1.2"
           }
         },
         "ignore-walk": {
@@ -1676,7 +1677,7 @@
           "dev": true,
           "optional": true,
           "requires": {
-            "minimatch": "^3.0.4"
+            "minimatch": "3.0.4"
           }
         },
         "inflight": {
@@ -1685,15 +1686,14 @@
           "dev": true,
           "optional": true,
           "requires": {
-            "once": "^1.3.0",
-            "wrappy": "1"
+            "once": "1.4.0",
+            "wrappy": "1.0.2"
           }
         },
         "inherits": {
           "version": "2.0.3",
           "bundled": true,
-          "dev": true,
-          "optional": true
+          "dev": true
         },
         "ini": {
           "version": "1.3.5",
@@ -1705,9 +1705,8 @@
           "version": "1.0.0",
           "bundled": true,
           "dev": true,
-          "optional": true,
           "requires": {
-            "number-is-nan": "^1.0.0"
+            "number-is-nan": "1.0.1"
           }
         },
         "isarray": {
@@ -1720,25 +1719,22 @@
           "version": "3.0.4",
           "bundled": true,
           "dev": true,
-          "optional": true,
           "requires": {
-            "brace-expansion": "^1.1.7"
+            "brace-expansion": "1.1.11"
           }
         },
         "minimist": {
           "version": "0.0.8",
           "bundled": true,
-          "dev": true,
-          "optional": true
+          "dev": true
         },
         "minipass": {
           "version": "2.2.4",
           "bundled": true,
           "dev": true,
-          "optional": true,
           "requires": {
-            "safe-buffer": "^5.1.1",
-            "yallist": "^3.0.0"
+            "safe-buffer": "5.1.1",
+            "yallist": "3.0.2"
           }
         },
         "minizlib": {
@@ -1747,14 +1743,13 @@
           "dev": true,
           "optional": true,
           "requires": {
-            "minipass": "^2.2.1"
+            "minipass": "2.2.4"
           }
         },
         "mkdirp": {
           "version": "0.5.1",
           "bundled": true,
           "dev": true,
-          "optional": true,
           "requires": {
             "minimist": "0.0.8"
           }
@@ -1771,9 +1766,9 @@
           "dev": true,
           "optional": true,
           "requires": {
-            "debug": "^2.1.2",
-            "iconv-lite": "^0.4.4",
-            "sax": "^1.2.4"
+            "debug": "2.6.9",
+            "iconv-lite": "0.4.21",
+            "sax": "1.2.4"
           }
         },
         "node-pre-gyp": {
@@ -1782,16 +1777,16 @@
           "dev": true,
           "optional": true,
           "requires": {
-            "detect-libc": "^1.0.2",
-            "mkdirp": "^0.5.1",
-            "needle": "^2.2.0",
-            "nopt": "^4.0.1",
-            "npm-packlist": "^1.1.6",
-            "npmlog": "^4.0.2",
-            "rc": "^1.1.7",
-            "rimraf": "^2.6.1",
-            "semver": "^5.3.0",
-            "tar": "^4"
+            "detect-libc": "1.0.3",
+            "mkdirp": "0.5.1",
+            "needle": "2.2.0",
+            "nopt": "4.0.1",
+            "npm-packlist": "1.1.10",
+            "npmlog": "4.1.2",
+            "rc": "1.2.7",
+            "rimraf": "2.6.2",
+            "semver": "5.5.0",
+            "tar": "4.4.1"
           }
         },
         "nopt": {
@@ -1800,8 +1795,8 @@
           "dev": true,
           "optional": true,
           "requires": {
-            "abbrev": "1",
-            "osenv": "^0.1.4"
+            "abbrev": "1.1.1",
+            "osenv": "0.1.5"
           }
         },
         "npm-bundled": {
@@ -1816,8 +1811,8 @@
           "dev": true,
           "optional": true,
           "requires": {
-            "ignore-walk": "^3.0.1",
-            "npm-bundled": "^1.0.1"
+            "ignore-walk": "3.0.1",
+            "npm-bundled": "1.0.3"
           }
         },
         "npmlog": {
@@ -1826,17 +1821,16 @@
           "dev": true,
           "optional": true,
           "requires": {
-            "are-we-there-yet": "~1.1.2",
-            "console-control-strings": "~1.1.0",
-            "gauge": "~2.7.3",
-            "set-blocking": "~2.0.0"
+            "are-we-there-yet": "1.1.4",
+            "console-control-strings": "1.1.0",
+            "gauge": "2.7.4",
+            "set-blocking": "2.0.0"
           }
         },
         "number-is-nan": {
           "version": "1.0.1",
           "bundled": true,
-          "dev": true,
-          "optional": true
+          "dev": true
         },
         "object-assign": {
           "version": "4.1.1",
@@ -1848,9 +1842,8 @@
           "version": "1.4.0",
           "bundled": true,
           "dev": true,
-          "optional": true,
           "requires": {
-            "wrappy": "1"
+            "wrappy": "1.0.2"
           }
         },
         "os-homedir": {
@@ -1871,8 +1864,8 @@
           "dev": true,
           "optional": true,
           "requires": {
-            "os-homedir": "^1.0.0",
-            "os-tmpdir": "^1.0.0"
+            "os-homedir": "1.0.2",
+            "os-tmpdir": "1.0.2"
           }
         },
         "path-is-absolute": {
@@ -1893,10 +1886,10 @@
           "dev": true,
           "optional": true,
           "requires": {
-            "deep-extend": "^0.5.1",
-            "ini": "~1.3.0",
-            "minimist": "^1.2.0",
-            "strip-json-comments": "~2.0.1"
+            "deep-extend": "0.5.1",
+            "ini": "1.3.5",
+            "minimist": "1.2.0",
+            "strip-json-comments": "2.0.1"
           },
           "dependencies": {
             "minimist": {
@@ -1913,13 +1906,13 @@
           "dev": true,
           "optional": true,
           "requires": {
-            "core-util-is": "~1.0.0",
-            "inherits": "~2.0.3",
-            "isarray": "~1.0.0",
-            "process-nextick-args": "~2.0.0",
-            "safe-buffer": "~5.1.1",
-            "string_decoder": "~1.1.1",
-            "util-deprecate": "~1.0.1"
+            "core-util-is": "1.0.2",
+            "inherits": "2.0.3",
+            "isarray": "1.0.0",
+            "process-nextick-args": "2.0.0",
+            "safe-buffer": "5.1.1",
+            "string_decoder": "1.1.1",
+            "util-deprecate": "1.0.2"
           }
         },
         "rimraf": {
@@ -1928,7 +1921,7 @@
           "dev": true,
           "optional": true,
           "requires": {
-            "glob": "^7.0.5"
+            "glob": "7.1.2"
           }
         },
         "safe-buffer": {
@@ -1970,11 +1963,10 @@
           "version": "1.0.2",
           "bundled": true,
           "dev": true,
-          "optional": true,
           "requires": {
-            "code-point-at": "^1.0.0",
-            "is-fullwidth-code-point": "^1.0.0",
-            "strip-ansi": "^3.0.0"
+            "code-point-at": "1.1.0",
+            "is-fullwidth-code-point": "1.0.0",
+            "strip-ansi": "3.0.1"
           }
         },
         "string_decoder": {
@@ -1983,7 +1975,7 @@
           "dev": true,
           "optional": true,
           "requires": {
-            "safe-buffer": "~5.1.0"
+            "safe-buffer": "5.1.1"
           }
         },
         "strip-ansi": {
@@ -1991,7 +1983,7 @@
           "bundled": true,
           "dev": true,
           "requires": {
-            "ansi-regex": "^2.0.0"
+            "ansi-regex": "2.1.1"
           }
         },
         "strip-json-comments": {
@@ -2006,13 +1998,13 @@
           "dev": true,
           "optional": true,
           "requires": {
-            "chownr": "^1.0.1",
-            "fs-minipass": "^1.2.5",
-            "minipass": "^2.2.4",
-            "minizlib": "^1.1.0",
-            "mkdirp": "^0.5.0",
-            "safe-buffer": "^5.1.1",
-            "yallist": "^3.0.2"
+            "chownr": "1.0.1",
+            "fs-minipass": "1.2.5",
+            "minipass": "2.2.4",
+            "minizlib": "1.1.0",
+            "mkdirp": "0.5.1",
+            "safe-buffer": "5.1.1",
+            "yallist": "3.0.2"
           }
         },
         "util-deprecate": {
@@ -2027,7 +2019,7 @@
           "dev": true,
           "optional": true,
           "requires": {
-            "string-width": "^1.0.2"
+            "string-width": "1.0.2"
           }
         },
         "wrappy": {
diff --git a/src/Microsoft.AspNetCore.Components.Browser.JS/package.json b/src/Microsoft.AspNetCore.Components.Browser.JS/package.json
index 46337ca916..0a25d7414c 100644
--- a/src/Microsoft.AspNetCore.Components.Browser.JS/package.json
+++ b/src/Microsoft.AspNetCore.Components.Browser.JS/package.json
@@ -1,5 +1,5 @@
 {
-  "name": "blazor.host.client",
+  "name": "microsoft.aspnetcore.components.browser.js",
   "version": "0.0.1",
   "description": "",
   "main": "index.js",
@@ -9,12 +9,13 @@
     "test": "echo \"Error: no test specified\" && exit 1"
   },
   "devDependencies": {
+    "@aspnet/signalr": "^1.0.0",
+    "@aspnet/signalr-protocol-msgpack": "^1.0.0",
+    "@dotnet/jsinterop": "^0.1.1",
     "@types/emscripten": "0.0.31",
     "ts-loader": "^4.4.1",
     "typescript": "^2.9.2",
     "webpack": "^4.12.0",
-    "webpack-cli": "^3.0.8",
-    "@aspnet/signalr": "^1.0.0",
-    "@aspnet/signalr-protocol-msgpack": "^1.0.0"
+    "webpack-cli": "^3.0.8"
   }
 }
diff --git a/src/Microsoft.AspNetCore.Components.Browser.JS/src/Boot.Server.ts b/src/Microsoft.AspNetCore.Components.Browser.JS/src/Boot.Server.ts
index d9d9fede0e..c8c4720eab 100644
--- a/src/Microsoft.AspNetCore.Components.Browser.JS/src/Boot.Server.ts
+++ b/src/Microsoft.AspNetCore.Components.Browser.JS/src/Boot.Server.ts
@@ -1,6 +1,5 @@
-import '../../../modules/jsinterop/src/Microsoft.JSInterop.JS/src/Microsoft.JSInterop';
+import '@dotnet/jsinterop';
 import './GlobalExports';
-import * as Environment from './Environment';
 import * as signalR from '@aspnet/signalr';
 import { MessagePackHubProtocol } from '@aspnet/signalr-protocol-msgpack';
 import { OutOfProcessRenderBatch } from './Rendering/RenderBatch/OutOfProcessRenderBatch';
diff --git a/src/Microsoft.AspNetCore.Components.Browser.JS/src/Boot.WebAssembly.ts b/src/Microsoft.AspNetCore.Components.Browser.JS/src/Boot.WebAssembly.ts
index 040451b813..86eac84de1 100644
--- a/src/Microsoft.AspNetCore.Components.Browser.JS/src/Boot.WebAssembly.ts
+++ b/src/Microsoft.AspNetCore.Components.Browser.JS/src/Boot.WebAssembly.ts
@@ -1,10 +1,9 @@
-import '../../../modules/jsinterop/src/Microsoft.JSInterop.JS/src/Microsoft.JSInterop';
+import '@dotnet/jsinterop';
 import './GlobalExports';
 import * as Environment from './Environment';
 import { monoPlatform } from './Platform/Mono/MonoPlatform';
 import { getAssemblyNameFromUrl } from './Platform/Url';
 import { renderBatch } from './Rendering/Renderer';
-import { RenderBatch } from './Rendering/RenderBatch/RenderBatch';
 import { SharedMemoryRenderBatch } from './Rendering/RenderBatch/SharedMemoryRenderBatch';
 import { Pointer } from './Platform/Platform';
 import { fetchBootConfigAsync, loadEmbeddedResourcesAsync } from './BootCommon';
diff --git a/src/Microsoft.AspNetCore.Components.Browser.JS/src/BootCommon.ts b/src/Microsoft.AspNetCore.Components.Browser.JS/src/BootCommon.ts
index ae45c5740c..ee17d8263b 100644
--- a/src/Microsoft.AspNetCore.Components.Browser.JS/src/BootCommon.ts
+++ b/src/Microsoft.AspNetCore.Components.Browser.JS/src/BootCommon.ts
@@ -24,7 +24,7 @@ function loadResourceFromElement(element: HTMLElement) {
   return new Promise((resolve, reject) => {
     element.onload = resolve;
     element.onerror = reject;
-    document.head.appendChild(element);
+    document.head!.appendChild(element);
   });
 }
 
diff --git a/src/Microsoft.AspNetCore.Components.Browser/Microsoft.AspNetCore.Components.Browser.csproj b/src/Microsoft.AspNetCore.Components.Browser/Microsoft.AspNetCore.Components.Browser.csproj
index 36f517dc36..b22bb0538d 100644
--- a/src/Microsoft.AspNetCore.Components.Browser/Microsoft.AspNetCore.Components.Browser.csproj
+++ b/src/Microsoft.AspNetCore.Components.Browser/Microsoft.AspNetCore.Components.Browser.csproj
@@ -6,10 +6,10 @@
 
   <ItemGroup>
     <PackageReference Include="Microsoft.Extensions.DependencyInjection" Version="$(AspNetCorePackageVersion)" />
+    <PackageReference Include="Mono.WebAssembly.Interop" Version="$(JSInteropPackageVersion)" />
   </ItemGroup>
 
   <ItemGroup>
-    <ProjectReference Include="..\..\modules\jsinterop\src\Mono.WebAssembly.Interop\Mono.WebAssembly.Interop.csproj" />
     <ProjectReference Include="..\Microsoft.AspNetCore.Components\Microsoft.AspNetCore.Components.csproj" />
   </ItemGroup>
 
diff --git a/src/Microsoft.AspNetCore.Components.Build/Microsoft.AspNetCore.Components.Build.csproj b/src/Microsoft.AspNetCore.Components.Build/Microsoft.AspNetCore.Components.Build.csproj
index 41b12945a9..9c94289ee5 100644
--- a/src/Microsoft.AspNetCore.Components.Build/Microsoft.AspNetCore.Components.Build.csproj
+++ b/src/Microsoft.AspNetCore.Components.Build/Microsoft.AspNetCore.Components.Build.csproj
@@ -21,7 +21,8 @@
       <NuspecProperties>
       version=$(PackageVersion);
       publishDir=$([MSBuild]::NormalizeDirectory($(IntermediatePackDir)));
-      razorversion=$(MicrosoftAspNetCoreRazorDesignPackageVersion);</NuspecProperties>
+      razorversion=$(MicrosoftAspNetCoreRazorDesignPackageVersion);
+      blazormonoversion=$(MicrosoftAspNetCoreBlazorMonoPackageVersion);</NuspecProperties>
     </PropertyGroup>
     <ItemGroup>
       <_TargetFramework Include="$(TargetFrameworks)" />
diff --git a/src/Microsoft.AspNetCore.Components.Build/Microsoft.AspNetCore.Components.Build.nuspec b/src/Microsoft.AspNetCore.Components.Build/Microsoft.AspNetCore.Components.Build.nuspec
index ecb5b09c42..94ee93f4b3 100644
--- a/src/Microsoft.AspNetCore.Components.Build/Microsoft.AspNetCore.Components.Build.nuspec
+++ b/src/Microsoft.AspNetCore.Components.Build/Microsoft.AspNetCore.Components.Build.nuspec
@@ -12,7 +12,7 @@
     <dependencies>
       <dependency id="Microsoft.AspNetCore.Razor.Design" version="$razorversion$" include="all" />
       <dependency id="Microsoft.AspNetCore.Components.Analyzers" version="$version$" include="all" />
-      <dependency id="Microsoft.AspNetCore.Blazor.Mono" version="$version$" include="all" />
+      <dependency id="Microsoft.AspNetCore.Blazor.Mono" version="$blazormonoversion$" include="all" />
     </dependencies>
   </metadata>
   <files>
diff --git a/src/Microsoft.AspNetCore.Components.Build/ReferenceFromSource.props b/src/Microsoft.AspNetCore.Components.Build/ReferenceFromSource.props
index c4eb7b731c..dae35da3f1 100644
--- a/src/Microsoft.AspNetCore.Components.Build/ReferenceFromSource.props
+++ b/src/Microsoft.AspNetCore.Components.Build/ReferenceFromSource.props
@@ -9,17 +9,8 @@
   This is only intended for use by other projects in this repo.
   -->
 
-  <!--
-    TODO: Remove this propertygroup once we start referencing Microsoft.AspNetCore.Blazor.Mono
-    as an external package dependency (i.e., not in same repo).
-  -->
   <PropertyGroup>
     <BlazorBuildReferenceFromSource>true</BlazorBuildReferenceFromSource>
-    <BlazorMonoRuntimeBasePath>$(MSBuildThisFileDirectory)../../blazor/src/Microsoft.AspNetCore.Blazor.Mono/</BlazorMonoRuntimeBasePath>
-    <MonoLinkerPath>$(BlazorMonoRuntimeBasePath)tools/binaries/illink/illink.dll</MonoLinkerPath>
-    <MonoBaseClassLibraryPath>$(BlazorMonoRuntimeBasePath)dist/bcl/</MonoBaseClassLibraryPath>
-    <MonoBaseClassLibraryFacadesPath>$(BlazorMonoRuntimeBasePath)dist/bcl/Facades/</MonoBaseClassLibraryFacadesPath>
-    <MonoWasmRuntimePath>$(BlazorMonoRuntimeBasePath)dist/wasm/</MonoWasmRuntimePath>
     <BlazorJsPath>$(MSBuildThisFileDirectory)../Microsoft.AspNetCore.Components.Browser.JS/dist/blazor.*.js</BlazorJsPath>
   </PropertyGroup>
 
@@ -27,6 +18,7 @@
   <Import Project="$(MSBuildThisFileDirectory)targets/All.targets" />
 
   <ItemGroup>
+    <PackageReference Include="Microsoft.AspNetCore.Blazor.Mono" Version="$(MicrosoftAspNetCoreBlazorMonoPackageVersion)" />
     <PackageReference Include="Microsoft.AspNetCore.Razor.Design" Version="$(MicrosoftAspNetCoreRazorDesignPackageVersion)" />
   </ItemGroup>
 
@@ -41,8 +33,6 @@
     <!-- Ensures these projects are built before the consuming project, but without
          adding a runtime dependency on the .dll (to be equivalent to a <PackageDependency>
          given that the packed version of this project wouldn't add a .dll reference) -->
-    <MSBuild Projects="$(MSBuildThisFileDirectory)..\..\blazor\src\Microsoft.AspNetCore.Blazor.BuildTools\Microsoft.AspNetCore.Blazor.BuildTools.csproj" Targets="Build" />
-    <MSBuild Projects="$(MSBuildThisFileDirectory)..\..\blazor\src\Microsoft.AspNetCore.Blazor.Mono\Microsoft.AspNetCore.Blazor.Mono.csproj" Targets="Build" />
     <MSBuild Projects="$(MSBuildThisFileDirectory)Microsoft.AspNetCore.Components.Build.csproj" Targets="Build" />
   </Target>
 
diff --git a/src/Microsoft.AspNetCore.Components/Microsoft.AspNetCore.Components.csproj b/src/Microsoft.AspNetCore.Components/Microsoft.AspNetCore.Components.csproj
index 8124edc0aa..23745a96e6 100644
--- a/src/Microsoft.AspNetCore.Components/Microsoft.AspNetCore.Components.csproj
+++ b/src/Microsoft.AspNetCore.Components/Microsoft.AspNetCore.Components.csproj
@@ -5,7 +5,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <ProjectReference Include="..\..\modules\jsinterop\src\Microsoft.JSInterop\Microsoft.JSInterop.csproj" />
+    <PackageReference Include="Microsoft.JSInterop" Version="$(JSInteropPackageVersion)" />
   </ItemGroup>
 
 </Project>
diff --git a/test/Microsoft.AspNetCore.Components.Build.Test/Microsoft.AspNetCore.Components.Build.Test.csproj b/test/Microsoft.AspNetCore.Components.Build.Test/Microsoft.AspNetCore.Components.Build.Test.csproj
index f5d8905b6f..457103fa08 100644
--- a/test/Microsoft.AspNetCore.Components.Build.Test/Microsoft.AspNetCore.Components.Build.Test.csproj
+++ b/test/Microsoft.AspNetCore.Components.Build.Test/Microsoft.AspNetCore.Components.Build.Test.csproj
@@ -28,6 +28,7 @@
     <PackageReference Include="xunit" Version="2.3.1" />
     <PackageReference Include="xunit.runner.visualstudio" Version="2.3.1" />
     <PackageReference Include="Mono.Cecil" Version="0.10.0-beta7" />
+    <PackageReference Include="Microsoft.AspNetCore.Blazor.Mono" Version="$(MicrosoftAspNetCoreBlazorMonoPackageVersion)" />
   </ItemGroup>
 
   <ItemGroup>
@@ -41,7 +42,13 @@
 
   <!-- A bit of msbuild magic to support reference resolver tests -->
   <Target Name="CreateReferenceHintPathsList" AfterTargets="Build">
+    <ItemGroup>
+      <_BclDirectory Include="$(MonoBaseClassLibraryPath)" />
+      <_BclDirectory Include="$(MonoBaseClassLibraryFacadesPath)" />
+    </ItemGroup>
+
     <WriteLinesToFile Lines="@(ReferencePath)" File="$(TargetDir)referenceHints.txt" WriteOnlyWhenDifferent="true" Overwrite="true" />
+    <WriteLinesToFile Lines="@(_BclDirectory)" File="$(TargetDir)bclLocations.txt" WriteOnlyWhenDifferent="true" Overwrite="true" />
   </Target>
 
 </Project>
diff --git a/test/Microsoft.AspNetCore.Components.Build.Test/RuntimeDependenciesResolverTest.cs b/test/Microsoft.AspNetCore.Components.Build.Test/RuntimeDependenciesResolverTest.cs
index 42f5741d39..0e8c2a805f 100644
--- a/test/Microsoft.AspNetCore.Components.Build.Test/RuntimeDependenciesResolverTest.cs
+++ b/test/Microsoft.AspNetCore.Components.Build.Test/RuntimeDependenciesResolverTest.cs
@@ -16,11 +16,13 @@ namespace Microsoft.AspNetCore.Components.Build.Test
             // Arrange
             var standaloneAppAssembly = typeof(StandaloneApp.Program).Assembly;
             var mainAssemblyLocation = standaloneAppAssembly.Location;
+            var mainAssemblyDirectory = Path.GetDirectoryName(mainAssemblyLocation);
             // This list of hints is populated by MSBuild so it will be on the output
             // folder.
             var hintPaths = File.ReadAllLines(Path.Combine(
-                Path.GetDirectoryName(mainAssemblyLocation),
-                "referenceHints.txt"));
+                mainAssemblyDirectory, "referenceHints.txt"));
+            var bclLocations = File.ReadAllLines(Path.Combine(
+                mainAssemblyDirectory, "bclLocations.txt"));
             var references = new[]
             {
                 "Microsoft.AspNetCore.Components.Browser.dll",
@@ -32,13 +34,6 @@ namespace Microsoft.AspNetCore.Components.Build.Test
             }.Select(a => hintPaths.Single(p => Path.GetFileName(p) == a))
             .ToArray();
 
-            var basePath = Path.GetDirectoryName(typeof(RuntimeDependenciesResolverTest).Assembly.Location);
-            var bclLocations = new []
-            {
-                Path.Combine(basePath, "../../../../../blazor/src/Microsoft.AspNetCore.Blazor.Mono/dist/bcl/"),
-                Path.Combine(basePath, "../../../../../blazor/src/Microsoft.AspNetCore.Blazor.Mono/dist/bcl/Facades/"),
-            };
-
             var expectedContents = new[]
             {
                 /*
@@ -64,10 +59,8 @@ namespace Microsoft.AspNetCore.Components.Build.Test
                 "Microsoft.Extensions.DependencyInjection.Abstractions.dll",
                 "Microsoft.Extensions.DependencyInjection.dll",
                 "Microsoft.JSInterop.dll",
-                "Microsoft.JSInterop.pdb",
                 "Mono.Security.dll",
                 "Mono.WebAssembly.Interop.dll",
-                "Mono.WebAssembly.Interop.pdb",
                 "mscorlib.dll",
                 "netstandard.dll",
                 "StandaloneApp.dll",