1. In JavaScriptEngineSwitcher.Jurassic added support of Jurassic version of March 5, 2016;

2. In JavaScriptEngineSwitcher.Jint added support of Jint version of March 6, 2016;
3. In JavaScriptEngineSwitcher.ChakraCore added support of ChakraCore version of March 6, 2016.

Author: Taritsyn

Binaries/ChakraCore/x64/ChakraCore.dll

@@ -30,7 +30,7 @@ public sealed class ChakraCoreJsEngine : JsEngineBase
 		/// <summary>
 		/// Version of original JavaScript engine
 		/// </summary>
-		private const string ENGINE_VERSION = "1.1";
+		private const string ENGINE_VERSION = "Mar 6, 2016";
 
 		/// <summary>
 		/// Instance of JavaScript runtime
@@ -43,9 +43,9 @@ public sealed class ChakraCoreJsEngine : JsEngineBase
 		private readonly JsContext _jsContext;
 
 		/// <summary>
-		/// Run synchronizer
+		/// Synchronizer of code execution
 		/// </summary>
-		private readonly object _runSynchronizer = new object();
+		private readonly object _executionSynchronizer = new object();
 
 		/// <summary>
 		/// List of external objects
@@ -120,7 +120,7 @@ public ChakraCoreJsEngine()
 
 		private void InvokeScript(Action action)
 		{
-			lock (_runSynchronizer)
+			lock (_executionSynchronizer)
 			using (new JsScope(_jsContext))
 			{
 				try
@@ -136,7 +136,7 @@ private void InvokeScript(Action action)
 
 		private T InvokeScript<T>(Func<T> func)
 		{
-			lock (_runSynchronizer)
+			lock (_executionSynchronizer)
 			using (new JsScope(_jsContext))
 			{
 				try
@@ -157,9 +157,9 @@ private T InvokeScript<T>(Func<T> func)
 		/// managed objects contained in fields of class</param>
 		private void Dispose(bool disposing)
 		{
-			lock (_runSynchronizer)
+			if (_disposedFlag.Set())
 			{
-				if (_disposedFlag.Set())
+				lock (_executionSynchronizer)
 				{
 					_jsRuntime.Dispose();
 
@@ -336,7 +336,7 @@ private void ExternalObjectFinalizeCallback(IntPtr data)
 				return;
 			}
 
-			lock (_runSynchronizer)
+			lock (_executionSynchronizer)
 			{
 				_externalObjects.Remove(obj);
 			}

Binaries/ChakraCore/x86/ChakraCore.dll

@@ -13,5 +13,5 @@
 [assembly: ComVisible(false)]
 [assembly: Guid("07d1fd39-469c-44ae-bf0f-4116f8887669")]
 
-[assembly: AssemblyVersion("1.5.0.0")]
-[assembly: AssemblyFileVersion("1.5.0.0")]
+[assembly: AssemblyVersion("1.5.1.0")]
+[assembly: AssemblyFileVersion("1.5.1.0")]

Binaries/Jint/Jint.dll

@@ -44,7 +44,7 @@
     </ProjectReference>
   </ItemGroup>
   <ItemGroup>
-    <Reference Include="Jint, Version=2.7.1.0, Culture=neutral, PublicKeyToken=2e92ba9c8d81157f, processorArchitecture=MSIL">
+    <Reference Include="Jint, Version=2.8.0.0, Culture=neutral, PublicKeyToken=2e92ba9c8d81157f, processorArchitecture=MSIL">
       <SpecificVersion>False</SpecificVersion>
       <HintPath>..\..\Binaries\Jint\Jint.dll</HintPath>
     </Reference>