Blacklist "strict" Babel transformer so "this" isn't transformed incorrectly. Closes #176

Author: Daniel15

build.proj

@@ -11,7 +11,7 @@ of patent rights can be found in the PATENTS file in the same directory.
 	<PropertyGroup>
 		<Major>2</Major>
 		<Minor>0</Minor>
-		<Build>0</Build>
+		<Build>1</Build>
 		<Revision>0</Revision>
 		<DevNuGetServer>http://reactjs.net/packages/</DevNuGetServer>
 		<MSBuildCommunityTasksPath>$(MSBuildProjectDirectory)\tools\MSBuildTasks</MSBuildCommunityTasksPath>

src/React.AspNet/project.json

@@ -1,5 +1,5 @@
 {
-    "version": "2.0.0-*",
+    "version": "2.0.1-*",
     "configurations": {
         "Debug": {
             "compilationOptions": {

src/React.Core/BabelConfig.cs

@@ -16,6 +16,11 @@ public class BabelConfig
 		/// </summary>
 		public bool AllLoose { get; set; }
 
+		/// <summary>
+		/// Gets or sets the transformers to blacklist
+		/// </summary>
+		public IEnumerable<string> Blacklist { get; set; } 
+
 		/// <summary>
 		/// Gets or sets whether Babel should use a reference to babelHelpers instead of placing
 		/// helpers at the top of your code. Meant to be used in conjunction with external 
@@ -46,6 +51,10 @@ public class BabelConfig
 		/// </summary>
 		public BabelConfig()
 		{
+			// By default, we blacklist the "strict" transform, as it messes with the top-level "this".
+			// This is required since we're not actually using JavaScript modules directly in ReactJS.NET yet.
+			// See https://babeljs.io/docs/faq/#why-is-this-being-remapped-to-undefined-
+			Blacklist = new[] {"strict"};
 			Stage = 2;
 		}
 
@@ -57,6 +66,7 @@ public string Serialize()
 		{
 			var config = new Dictionary<string, object>
 			{
+				{"blacklist", Blacklist},
 				{"externalHelpers", ExternalHelpers},
 				{"optional", Optional},
 				{"stage", Stage},

src/React.Sample.Mvc6/project.json

@@ -1,6 +1,6 @@
 {
     "webroot": "wwwroot",
-    "version": "2.0.0-*",
+    "version": "2.0.1-*",
     "dependencies": {
         "Microsoft.AspNet.Mvc": "6.0.0-beta8",
         "Microsoft.AspNet.Diagnostics": "1.0.0-beta8",

src/React.Tests/Core/BabelConfigTests.cs

@@ -22,7 +22,7 @@ public void SerializesAllLoose()
 				AllLoose = true,
 			};
 			var result = config.Serialize();
-			Assert.AreEqual(@"{""externalHelpers"":false,""optional"":null,""stage"":2,""loose"":""all""}", result);
+			Assert.AreEqual(@"{""blacklist"":[""strict""],""externalHelpers"":false,""optional"":null,""stage"":2,""loose"":""all""}", result);
 		}
 
 		[Test]
@@ -33,7 +33,7 @@ public void SerializesSomeLoose()
 				Loose = new[] { "foo" },
 			};
 			var result = config.Serialize();
-			Assert.AreEqual(@"{""externalHelpers"":false,""optional"":null,""stage"":2,""loose"":[""foo""]}", result);
+			Assert.AreEqual(@"{""blacklist"":[""strict""],""externalHelpers"":false,""optional"":null,""stage"":2,""loose"":[""foo""]}", result);
 		}
 	}
 }

src/wrap/React.Core/project.json

@@ -1,5 +1,5 @@
 {
-  "version": "2.0.0-*",
+  "version": "2.0.1-*",
   "frameworks": {
     "net40": {
       "wrappedProject": "../../React.Core/React.Core.csproj",

src/wrap/VroomJs/project.json

@@ -1,5 +1,5 @@
 {
-  "version": "2.0.0-*",
+  "version": "2.0.1-*",
   "frameworks": {
     "net40": {
       "bin": {