Channel: ClearScript
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Released: ClearScript 5.4 (Oct 22, 2014)

  • Enabled V8 snapshot feature to accelerate V8ScriptEngine initialization.
  • Overhauled V8 interface, eliminating deprecated API usage and fixing Issue #116.
  • Tested with V8 5.5.372.40.

  • Added support for V8 parser and code caching.
  • Added ScriptObject to ease script object identification.
  • Fixed argument validation for interop interface parameters.
  • Fixed V8 crash when exceptions are thrown during script interruption (Issue #112).
  • Fixed V8 crash when code that consumes iterable host objects is optimized.
  • Fixed intermittent deadlocks during V8 runtime teardown.
  • Added a 64-bit OS check in V8Update.cmd.
  • Added tests for bug fixes and new APIs.
  • Tested with V8 5.4.500.40.

  • Added ImmutableValueAttribute and fixed canonical reference support.
  • Hardened native timers and V8 background tasks, fixing intermittent V8 crashes.
  • Fixed nested V8 syntax error reporting.
  • Added tests for bug fixes and new APIs.
  • Tested with V8 5.3.332.45.

  • Expanded canonical reference support to all equatable value types.
  • Fixed host-side and cross-engine assignment of VBScript class object properties (Issue #104).
  • Fixed a bug preventing assembly-qualified type names from being used with ScriptEngine.AddHostType().
  • Fixed double execution of exception-throwing code via C# dynamic (Issue #105).
  • Added IScriptEngineException.ExecutionStarted.
  • Fixed memory leak with shared V8 runtimes (Issue #107).
  • Fixed cross-engine double execution of exception-throwing code (Issue #108).
  • Tweaked V8 debug protocol implementation to support non-Eclipse debuggers.
  • Added tests for bug fixes and new APIs.
  • Tested with V8

  • Breaking Change: Added strongly-typed indexing support for IList<T>. Because IList<T> takes precedence over IList, array and list elements retrieved by index are now correctly type-restricted. Use the new propertyScriptEngine.DisableListIndexTypeRestriction to restore the previous behavior, orScriptEngine.DisableTypeRestriction to control type restriction globally.
  • Added V8ScriptEngine.SuppressExtensionMethodEnumeration (Issue #101).
  • Fixed native property hiding on V8 (Issue #98).
  • Fixed host method clobbering on V8.
  • Reduced V8 stack overflow detection false positives.
  • Added HostItemFlags.DirectAccess.
  • Added tests for bug fixes and new APIs.
  • Tested with V8 4.9.385.30.

  • Added fast data transfer between host arrays and JavaScript typed arrays (and other ArrayBuffer views) (Issue #83).
  • IEnumerable instances now supportES6 iteration andfor...of when exposed inV8ScriptEngine.
  • Added fully dynamic treatment for exposed IDispatchEx instances (Issue #96).
  • Fixed host member enumeration and deletion on JScript with Standards Mode (Issue #94).
  • Improved numeric argument conversion and matching (Issue #95).
  • Fixed nested termination behavior on V8.
  • Added tests for bug fixes and new APIs.
  • Tested with V8

  • Added support for Visual Studio 2015.
  • Changed V8Update to use installed Python 2.x.
  • Fixed hangs in V8 proxy finalizers during script execution (Issue #86).
  • Fixed V8 weak handle callback context leak (Issue #90).
  • Fixed dynamic method invocation with value-typed arguments (Issue #89).
  • Improved V8ScriptEngine.Interrupt() latency and reliability.
  • Added tests for bug fixes.
  • Tested with V8
  • Fixed unnecessary assembly table construction (Issue #84).

  • Updated ClearScriptBenchmarks to use SunSpider 1.0.2.
  • Host methods and delegates in V8ScriptEngine now supporttoFunction(), which creates a native JavaScript function wrapper.
  • Fixed syntax error reporting in nested WindowsScriptEngine invocations.
  • Added defensive code to tolerate IProcessDebugManager::AddApplication() failure (Issue #76).
  • Added ScriptEngine.AddHostType() overloads that derive the script item name from the type name.
  • Implemented host item data sharing and other optimizations, boosting memory efficiency in many scenarios.
  • Added default ScriptAccess settings at the type, assembly, and engine levels.
  • Enhanced support for default properties, fixing Issue #74.
  • Added IHostWindow and WindowsScriptEngine.HostWindow (Issue #73).
  • V8RuntimeConstraints limits are now specified inMiB. For compatibility with hosts that predate an inadvertent breaking change in Version 5.4.1, values greater than 1048576 (1TiB) are still interpreted as bytes.
  • Fixed V8 debug agent in ASP.NET and eliminated excessive thread usage (Issue #75).
  • Added ScriptMemberFlags.WrapNullResult, ScriptEngine.EnableNullResultWrapping, and HostFunctions.isNull() (Issue #72).
  • Added enforcement of restricted access to non-public accessors of public properties (Issue #71).
  • (Andrey Taritsyn) Switched assembly targets to .NET 4 Client Profile.
  • Added tests for bug fixes and new APIs.
  • Tested with V8

  • Fixed several issues affecting GlobalMembers on V8.
  • Implemented a V8 debug agent to compensate for removed V8 API.
  • V8Update now fetches V8 source and dependencies from Git repositories.
  • Fixed V8 assembly unloading and patched V8 to tolerate redundant initialization (Issue #60).
  • Added ScriptEngine.EnableAutoHostVariables.
  • Fixed by-reference arguments to VBScript functions (Issue #58).
  • Removed support for Visual Studio 2012 (V8 build now requires at least Visual Studio 2013).
  • Added explicit loading of primary interop assemblies to fix Issue #68.
  • Added host exception marshaling for V8.
  • Fixed V8ScriptEngine crash when script code calls theHostObject constructor.
  • Fixed host item caching for host variables.
  • Added non-generic overloads of newArr() andfunc() to HostFunctions.
  • Added ScriptEngine.Current.
  • HostFunctions instances can now be exposed in multiple script engines.
  • Added a GetDynamicMemberNames() override toMetaScriptItem (Issue #64).
  • Fixed indexed property binding ambiguity for inherited interfaces (Issue #69).
  • Added tests for bug fixes and new APIs.
  • Tested with V8

  • Added COM object projection (Issue #38):
    • New ScriptEngine methods: AddCOMObject() and AddCOMType().
    • New ExtendedHostFunctions methods: newComObj() and comType().
  • Improved performance and memory usage:
    • Host methods, events, and const/readonly fields are now cached as direct V8 object properties.
    • Added shared bind cache for improved performance and enhanced binder leak mitigation.
    • Made V8ScriptEngine.CollectGarbage() much more aggressive.
    • Switched to weak context/isolate bindings for V8 script objects and compiled scripts, fixingIssue #44.
    • Bypassed reflection for Windows script item property and method access, fixingIssue #47.
    • Added explicit disposal of cached V8 objects to fix Issue #48.
  • Enhanced support for legacy scripts:
    • Added null, decimal, and array marshaling options to WindowsScriptEngine.
    • Added ScriptEngine.UseReflectionBindFallback.
    • VBScript's For Each ... Next and JScript's Enumerator now operate on IEnumerable instances.
  • Other enhancements:
    • Added optional heap size monitoring to V8ScriptEngine andV8Runtime (experimental).
    • Added HostFunctions.tryCatch().
    • Added ScriptEngine.Invoke() and V8ScriptEngine.Execute(V8Script).
    • Added {{ScriptEn

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