Change log

February 23, 2026 · View on GitHub

v3.3.1 - February 23, 2026

Was made refactoring

v3.3.0 - February 17, 2026

Optimized a memory usage in the ReflectionHelpers.GetBestFitMethod method
Added support for .NET Standard 2.1 and .NET 10
Performed a migration to the modern C# null/not-null checks
In the lock statements for .NET 10 target now uses a instances of the System.Threading.Lock class
Reduced a memory allocation by using collection expressions
The value of a read-only field in an embedded object or type can no longer be changed

v3.2.5 - March 1, 2024

Added a README.md file to NuGet package

v3.2.4 - January 8, 2024

Fixed a error that occurred in the ReflectionHelpers.IsAllowedProperty method when running on .NET Core 1.0

v3.2.3 - December 6, 2023

JSON2 library was updated to version of May 10, 2023

v3.2.2 - April 10, 2023

Fixed a error due to which the global object to become read-only after embedding of the host objects and types. Special thanks to Denis Pushkarev.

v3.2.1 - February 27, 2023

In JsRT modes improved a performance of .NET methods projection

v3.2.0 - February 26, 2023

In JavaScript engine settings was added one new property - AllowReflection (default false)

v3.1.0 - February 6, 2023

In JsRT modes, JsVariantToValue and JsValueToVariant native methods are no longer used for embedding objects and types
JSON2 library was updated to version of October 30, 2022

v3.0.9 - July 20, 2022

Now a case-sensitive cultural postfixes are used in the names of .resx files

v3.0.8 - August 8, 2021

Improved a implementation of the Dispose method

v3.0.7 - March 8, 2020

Fixed a error “Program crash after function call with too much parameters”

v3.0.6 - December 16, 2019

Fixed a errors leading to null reference exceptions in the ReflectionHelpers class. Special thanks to Vanjoge.

v3.0.5 - October 21, 2019

Fixed a error that caused a crash during finalization
In JsRT modes during calling of the CollectGarbage method is again not performed blocking

v3.0.4 - October 9, 2019

Slightly improved performance
In JsRT modes the CollectGarbage method is called synchronously again
Enabled a SourceLink in NuGet package

v3.0.3 - April 28, 2019

Fixed a error that occurred during the recursive execution and evaluation of JS files (while without correct handling of host exception)

v3.0.2 - March 13, 2019

In version for .NET Core improved a embedding of delegates and types

v3.0.1 - January 23, 2019

Fixed a error, that occurred in the Classic mode during calling an embedded delegate, which does not return a result
Fixed a error, that occurred during setting a value to field of embedded type
Improved a performance of the embedding of objects and types
Accelerated a conversion of script types to host types

v3.0.0 - December 24, 2018

Format of the error messages was unified
Created a new exception classes: JsCompilationException, JsEngineException, JsFatalException, JsInterruptedException, JsScriptException and JsUsageException. These exceptions are responsible for handling errors, some of which were previously handled by the JsRuntimeException class.
In the JsException class was added two new properties: Category and Description
From the JsRuntimeException class was removed one property - ErrorCode
In the JsRuntimeException class was added three new properties: Type, DocumentName and CallStack
JsEngineLoadException class now is inherited from the JsEngineException class
Format method of the JsErrorHelpers class was renamed to the GenerateErrorDetails
One part of the auxiliary code was removed, and other part moved to an external library - AdvancedStringBuilder
Added a ability to interrupt execution of the script
In JsRT modes added a ability to pre-compile scripts
In MsieJsEngine class was added SupportsScriptPrecompilation property and four new methods: Interrupt, Precompile, PrecompileFile and PrecompileResource
In JavaScript engine settings was added one new property - MaxStackSize (default 492 or 984 KB)
Added support of .NET Standard 2.0 (only supported ChakraIeJsRt and ChakraEdgeJsRt modes)

v3.0.0 RC 2 - December 4, 2018

Improved performance of debugging in ActiveScript modes
GetSourceFragmentFromLine method of JsErrorHelpers class has been replaced by the GetTextFragmentFromLine method of TextHelpers class
One part of the auxiliary code was removed, and other part moved to an external library - AdvancedStringBuilder
In the IeNativeMethods and EdgeNativeMethods classes for the netstandard targets was changed a calling convention from StdCall to Cdecl

v2.2.10 - November 20, 2018

Improved performance of debugging in ActiveScript modes
JSON2 library was updated to version of June 12, 2017

v3.0.0 RC 1 - September 18, 2018

In JavaScript engine settings was added one new property - MaxStackSize (default 492 or 984 KB)
JSON2 library was updated to version of June 12, 2017

v3.0.0 Beta 5 - August 23, 2018

Fixed a error, that occurred during the generation of error message

v2.2.9 - June 12, 2018

Changed a implementation of the Dispose method

v3.0.0 Beta 4 - June 6, 2018

Changed a implementation of the Dispose method

v3.0.0 Beta 3 - May 29, 2018

Fixed a error #18 “Block finalizer solved?”

v2.2.8 - May 24, 2018

Fixed a error #18 “Block finalizer solved?”

v3.0.0 Beta 2 - May 22, 2018

In MsieJsEngine class was added SupportsScriptPrecompilation property and three new methods: Precompile, PrecompileFile and PrecompileResource
In JsRT modes added a ability to pre-compile scripts

v2.2.7 - April 10, 2018

Fixed a minor errors

v3.0.0 Beta 1 - April 8, 2018

Format of the error messages was unified
Created a new exception classes: JsCompilationException, JsEngineException, JsFatalException and JsUsageException. These exceptions are responsible for handling errors, some of which were previously handled by the JsRuntimeException class.
In the JsException class was added two new properties: Category and Description
From the JsRuntimeException class was removed one property - ErrorCode
In the JsRuntimeException class was added three new properties: Type, DocumentName and CallStack
JsScriptInterruptedException class was renamed to the JsInterruptedException class and now is inherited from the JsRuntimeException class
JsEngineLoadException class now is inherited from the JsEngineException class
Format method of the JsErrorHelpers class was renamed to the GenerateErrorDetails

v2.2.6 - February 23, 2018

In JsRT modes during calling of the CollectGarbage method is no longer performed blocking

v2.2.5 - December 23, 2017

Removed a redundant code
Fixed a error, that occurred in the Classic mode during removing the embedded host objects and types
Fixed a error, that occurred during finding the suitable method overload, that receives numeric values and interfaces as parameters, of the host object

v3.0.0 Alpha 3 - December 10, 2017

Added support of .NET Standard 2.0
Fixed a error, that occurred in the Classic mode during removing the embedded host objects and types
Removed a redundant code
In JsRT modes during calling of the CollectGarbage method is no longer performed blocking

v3.0.0 Alpha 2 - November 17, 2017

Fixed a error, that occurred during finding the suitable method overload, that receives numeric values and interfaces as parameters, of the host object

v3.0.0 Alpha 1 - September 13, 2017

Added a ability to interrupt execution of the script

v2.2.4 - August 25, 2017

In ActiveScript modes now are uses the short names of error categories
In Classic mode during debugging now script error contains a full stack trace
In JsRT modes the compilation error messages now contains a information about the error location

v2.2.3 - July 4, 2017

Now during the rethrowing of exceptions are preserved the full call stack trace
Reduced a number of delegate-wrappers

v2.2.2 - June 28, 2017

Switched to Apache license
In JsRT modes fixed a problems in calculation of error locations
An attempt was made to prevent occurrence of the access violation exception
Now the original exception is added to instance of the JsRuntimeException class as an inner exception
An attempt was made to prevent a blocking of finalizer's thread
Added support of identifier names compliant with ECMAScript 5

v2.2.1 - April 25, 2017

Now during debugging in ActiveScript modes the script error contains a error location

v2.2.0 - April 21, 2017

Added support of .NET Core 1.0.4
In JsRT modes now script error contains a full stack trace
In MsieJsEngine class was added overloaded versions of the Evaluate, Evaluate<T> and Execute methods, which take the document name as second parameter
Now all modes support the possibility to debug in Visual Studio by adding the debugger statement to script code

v2.1.2 - February 12, 2017

Fixed a error causing a crash during finalization

v2.1.1 - February 10, 2017

Was made refactoring

v2.1.0 - December 19, 2016

Added support of .NET Core 1.0.3
Downgraded .NET Framework version from 4.5.1 to 4.5
Now when you call the overloaded version of the ExecuteResource method, that takes the type, need to pass the resource name without the namespace
Fixed a error “Out of stack space”
JSON2 library was updated to version of October 28, 2016

v2.0.2 - December 2, 2016

Another attempt to prevent occurrence of the access violation exception in the CallFunction method

v2.0.1 - November 8, 2016

All exceptions made serializable

v2.0.0 - September 19, 2016

Added support of .NET Core 1.0.1 (only supported ChakraIeJsRt and ChakraEdgeJsRt modes) and .NET Framework 4.5.1
Added the CollectGarbage method

v2.0.0 Beta 2 - September 17, 2016

Added support of .NET Core 1.0.1

v2.0.0 Beta 1 - September 9, 2016

Added the CollectGarbage method

v2.0.0 Alpha 1 - September 3, 2016

Added support of .NET Core 1.0 (only supported ChakraIeJsRt and ChakraEdgeJsRt modes) and .NET Framework 4.5.1

v1.7.2 - August 17, 2016

An attempt was made to prevent occurrence of the access violation exception in the CallFunction method

v1.7.1 - May 24, 2016

JSON2 library was updated to version of May 10, 2016

v1.7.0 - March 4, 2016

Added the EmbedHostObject method (embeds a instance of simple class, structure or delegate to script code)
Added the EmbedHostType method (embeds a host type to script code)
Added a possibility to debug in Visual Studio by adding the debugger statement to script code. This feature only works in the ChakraIeJsRt and ChakraEdgeJsRt modes.
In JavaScript engine settings was added one new property - EnableDebugging (default false)
Improved implementation of the CallFunction method for Chakra JsRT modes

v1.7.0 Beta 1 - February 26, 2016

Added the EmbedHostType method (embeds a host type to script code)

v1.7.0 Alpha 2 - January 16, 2016

Added a possibility to debug in Visual Studio by adding the debugger statement to script code. This feature only works in the ChakraIeJsRt and ChakraEdgeJsRt modes.
In JavaScript engine settings was added one new property - EnableDebugging (default false)

v1.7.0 Alpha 1 - January 5, 2016

Added the EmbedHostObject method (embeds a instance of simple class, structure or delegate to script code)
Improved implementation of the CallFunction method for Chakra JsRT modes

v1.6.0 - December 3, 2015

Added support of “Edge” JsRT version of Chakra JavaScript engine
ChakraJsRt mode was renamed to ChakraIeJsRt

v1.5.6 - July 23, 2015

Source code of the ChakraJsRtJsEngine was synchronized with the Chakra Sample Hosts version of July 11, 2015

v1.5.5 - June 29, 2015

Fixed an error, that occurs on computers with IE 6
Removed Obsolete attribute from parameterless constructor

v1.5.4 - June 28, 2015

In ChakraActiveScript mode added native support of ECMAScript 5 (without polyfills)
Added JsEngineSettings class for any reason in the future to abandon redundant constructors

v1.5.3 - May 5, 2015

JSON2 library was updated to version of May 3, 2015

v1.5.2 - April 5, 2015

JSON2 library was updated to version of February 25, 2015

v1.5.1 - January 13, 2015

In ECMAScript 5 Polyfill added polyfill for the String.prototype.split method

v1.5.0 - October 12, 2014

Removed dependency on System.Web.Extensions
Assembly is now targeted on the .NET Framework 4 Client Profile

v1.4.4 - July 22, 2014

Source code of the ChakraJsRtJsEngine was synchronized with the Chakra Sample Hosts version of July 22, 2014

v1.4.3 - April 27, 2014

In solution was enabled NuGet package restore
Fixed JavaScriptEngineSwitcher.Msie's bug #7 "MsieJavaScriptEngine.ActiveScript.ActiveScriptException not wrapped"

v1.4.2 - March 24, 2014

Fixed JavaScriptEngineSwitcher.Msie's bug #5 "MSIE "Catastrophic failure" when disposing"

v1.4.1 - March 22, 2014

Fixed minor bugs

v1.4.0 - February 27, 2014

Removed following methods: HasProperty, GetPropertyValue, SetPropertyValue and RemoveProperty
Fixed bug #3 "execute code from different threads"
Now in the ChakraJsRt mode is available a more detailed information about errors
In ECMAScript 5 Polyfill improved a performance of the String.prototype.trim method
JSON2 library was updated to version of February 4, 2014

v1.3.0 - January 16, 2014

Added support of the JsRT version of Chakra
Now the MSIE JavaScript Engine can work in 4 modes: Auto (selected by default), Classic, ChakraActiveScript and ChakraJsRt
Following methods are obsolete: HasProperty, GetPropertyValue, SetPropertyValue and RemoveProperty