Fix various spelling errors.

Fixes misspellings of:

• a..z (the English alphabet sequence a..z with one pair of letters transposed)
• actual
• algorithm
• amount
• although
• argument
• array
• as
• assignment
• auxiliary
• availability
• avoiding
• because
• beginning
• built
• canonicalization
• canonical
• catch
• causes
• collection
• committed
• compare
• comparison
• compilation
• completed
• concurrent
• conditions
• constructor
• contain
• context
• contiguous
• conversion
• convert
• corresponding
• counterparts
• coverage
• covered
• current
• declaration
• default
• deferred
• delimiters
• dependencies
• descriptions
• descriptor
• diagonal
• dictionary
• differently
• different
• disposed
• dynamically
• dynamic
• earlier
• emitting
• empty
• emulated
• encodable
• enough
• entrypoint
• enumerable
• environment
• evaluate
• everything
• exactly
• exception
• exercised
• existing
• expandos
• explicitly
• extension
• floatarray
• for-in
• foreign
• function
• generate
• generator
• granularity
• identical
• implemented
• implicit
• inclusive
• index
• indicate
• indicating
• infinity
• initializer
• initial
• injection
• inlinable
• inline
• insertion
• instance
• instantiate
• interior
• interpreter
• interpret
• invalidation
• invoke
• iterable
• iterator
• javascript
• label
• lambda
• lane
• language
• left
• length
• manager
• maximum
• member
• memory
• message
• metadata
• necessarily
• occurrence
• offset
• offsets
• of lit (two word sequence)
• ofobj
• ofreturn
• optimization
• original
• outer
• output
• overridable
• overridden
• owning
• parameter
• participate
• perlargest
• physical
• pollute
• polyfill
• polymorphic
• popping
• possibility
• preceded
• precise
• precision
• preferenced
• primitive
• processed
• profiled
• profile
• program
• progress
• propagate
• prop'd
• properties
• property
• prototype
• recycler
• re-enable
• referenceable
• reference
• registers
• removed
• required
• result
• semantics
• semicolon
• separately
• separator
• sequences
• should
• sibling
• signature
• similar
• simultaneously
• source
• sources
• spec'd
• specialization
• statement
• store
• straight
• subtags
• succeed
• successful
• sufficient
• summation
• supplied
• supported
• support
• surrogate
• telemetry
• ternary
• testing
• then
• the
• though
• threshold
• timing
• transferred
• traversal
• truncation
• typespec'd
• underflow
• uninitialized
• unknown
• unless
• unregister
• unroll
• unscopable
• using
• value
• variable
• verifies
• verify
• visitor
• without
• zero

brand:

• ForceES5Array

grammar:

• a/an
• any one of the ... is
• as an input/output
• because
• be replaced
• different thresholds
• have
• is
• is a
• it is
• lossless
• not to report
• operations
• required by
• the
• true
• a tortured sentence involving interleaving

Tagging an ambiguous token with a guess

• pronunciation

Whitespace

With our efforts to enable cross-platform development, and recently, to enable the use of NuGet packages for ChakraCore development with .NET and Native apps (#85), as well as other work we've been doing to enable other scenarios, we're interested in hearing from the community about what you've been building with ChakraCore, and what you would like to build.

Besides the issues you file, the feedback you give us on Gitter, and other tags of the ChakraCore project, we don't have as much visibility into your needs as we would like, we're hoping to hear from you about anything you'd like to share with us about your projects.

Some questions we have in mind:

• What projects are you working on?
• What have your experiences been when working with ChakraCore?
• Is our documentation helpful? If not, how can we improve? Were you able to find answers to your questions?
• Have you written any blog posts or made any other public documentation about your experiences with ChakraCore? We'd love to read them!
• Is there anything we can do to improve your development experiences?
• Are you interested in contributing to ChakraCore but something is blocking you from making progress?

Below, I’m tagging some folks who replied to #85, various other GitHub issues, and/or on Gitter with interest in a NuGet package for .NET and/or Native apps, or have otherwise indicated interest in developing with ChakraCore:

@resnyanskiy @gulbanana @ormico @jimmcslim @Oceanswave @matthargett @pre10der @MartinJohns @Fishrock123 @WickedA @jackTheRipper @dthompso99 @CatCatCatDog @fubar-coder @alexhultman @snowmantw @kphillisjr @TomSeymour @navidR @liydu @likidu @lwansbrough @atanasovg @galvesribeiro @ReubenBond @ninlar @kostaspl @lwansbrough, etc.

/cc @digitalinfinity @boingoing @liminzhu @bterlson @aruneshchandra @edmaurer @sethgaurav

I have implemented significant part of new APIs to debug ChakraCore and flushed most of bugs using debugger implemented in ch.

Before opening the PR request for merging code from JsRTDebugging to master it will be good to discuss the APIs name, signature and arguments.

Please take a look at https://github.com/Microsoft/ChakraCore/blob/JsRTDebugging/lib/Jsrt/ChakraDebug.h and provide any feedback you have.

Hello Friends of ChakraCore,

Yesterday, Microsoft Edge announced its intent to adopt the Chromium open source project in the development of desktop Microsoft Edge to create better web compatibility and less fragmentation for web developers and customers. You can read the announcement blog for more information.

We’ve seen your questions for ChakraCore and we want to be transparent and honest with the open-source community that has given us so much support. To be compatible with the rest of the platform and reduce interoperability risks, Microsoft Edge will use the V8 engine as part of this change. There is much to build and learn, but we’re excited to take part in the V8 community and start contributing to the project.

ChakraCore is currently being used in various projects outside the browser. So, despite the change of direction for Microsoft Edge, our team will continue supporting ChakraCore. We will ensure that any security vulnerability is patched in a timely manner, apart from bringing other enhancements to the engine. The project will also continue taking public contributions.

As the team learns from the move to support and contribute to Chromium and V8, we’ll keep the community informed about our progress and adjustments, if any, that we’ll need to make.

ChakraCore team

We had a mix of inconsistent file name styles. This creates problems on Linux as we had to modify source code includes to the same casing as real file names. This change attempts rename (most) /lib/ files to CamelCase.

lib/Backend                         =>  Lib/Backend

     BackEnd.cpp                             Backend.cpp
     BackEnd.h                               Backend.h
     BackEndOpcodeAttrAsmJs.cpp              BackendOpCodeAttrAsmJs.cpp
     BackEndOpcodeAttrAsmJs.h                BackendOpCodeAttrAsmJs.h
     BackEndOpCodeList.h                     BackendOpCodeList.h
     CodegenNumberAllocator.cpp              CodeGenNumberAllocator.cpp
     GlobOptBailout.cpp                      GlobOptBailOut.cpp
     SCCLiveness.cpp                         SccLiveness.cpp
     SCCLiveness.h                           SccLiveness.h


lib/Backend/amd64                   =>  Lib/Backend/amd64

     MdOpcodes.h                             MdOpCodes.h


lib/Backend/arm                     =>  Lib/Backend/arm

     MdOpcodes.h                             MdOpCodes.h


lib/Backend/arm64                   =>  Lib/Backend/arm64

     MdOpcodes.h                             MdOpCodes.h


lib/Backend/i386                    =>  Lib/Backend/i386

     MdOpcodes.h                             MdOpCodes.h


lib/common                          =>  Lib/Common

     BackEndAPI.h                            BackendApi.h
     commoninl.h                             CommonInl.h
     resource.h                              Resource.h


lib/common/common                   =>  Lib/Common/Common

     cfglogger.cpp                           CfgLogger.cpp
     cfglogger.h                             CfgLogger.h
     GetCurrentFrameID.h                     GetCurrentFrameId.h
     int16math.h                             Int16Math.h
     SmartFPUControl.cpp                     SmartFpuControl.cpp
     SmartFPUControl.h                       SmartFpuControl.h


lib/common/core                     =>  Lib/Common/Core

     api.h                                   Api.h
     AutoFILE.h                              AutoFile.h


lib/common/DataStructures           =>  Lib/Common/DataStructures

     comparer.h                              Comparer.h
     dictionary.h                            Dictionary.h
     Dlist.h                                 DList.h
     growingArray.cpp                        GrowingArray.cpp
     growingArray.h                          GrowingArray.h
     interval.h                              Interval.h
     list.h                                  List.h
     stack.h                                 Stack.h


lib/common/Exceptions               =>  Lib/Common/Exceptions

     reporterror.cpp                         ReportError.cpp
     reporterror.h                           ReportError.h


lib/common/Memory                   =>  Lib/Common/Memory

     collectionstate.h                       CollectionState.h
     heapblock.inl                           HeapBlock.inl
     heapbucket.cpp                          HeapBucket.cpp
     heapbucket.h                            HeapBucket.h
     heapbucket.inl                          HeapBucket.inl
     heapinfo.cpp                            HeapInfo.cpp
     heapinfo.h                              HeapInfo.h
     leakreport.cpp                          LeakReport.cpp
     leakreport.h                            LeakReport.h


lib/common/util                     =>  Lib/Common/Util

     pinned.cpp                              Pinned.cpp
     pinned.h                                Pinned.h


lib/jsrt                            =>  Lib/Jsrt

     chakracommon.h                          ChakraCommon.h
     jsrtcontext.cpp                         JsrtContext.cpp
     jsrtcontext.h                           JsrtContext.h
     jsrtExternalObject.cpp                  JsrtExternalObject.cpp
     jsrtExternalObject.h                    JsrtExternalObject.h
     jsrtinternal.h                          JsrtInternal.h
     jsrtRuntime.cpp                         JsrtRuntime.cpp
     jsrtRuntime.h                           JsrtRuntime.h
     jsrtThreadService.cpp                   JsrtThreadService.cpp
     jsrtThreadService.h                     JsrtThreadService.h


lib/Parser                          =>  Lib/Parser

     alloc.cpp                               Alloc.cpp
     alloc.h                                 Alloc.h
     hash.cpp                                Hash.cpp
     hash.h                                  Hash.h
     hashfunc.cpp                            HashFunc.cpp
     jsscan.js                               JsScan.js
     parse.cpp                               Parse.cpp
     parse.h                                 Parse.h
     regcodes.h                              RegCodes.h
     RegexOpcodes.h                          RegexOpCodes.h
     RegexRunTime.cpp                        RegexRuntime.cpp
     RegexRunTime.h                          RegexRuntime.h
     scan.cpp                                Scan.cpp
     scan.h                                  Scan.h


lib/Runtime/Base                    =>  Lib/Runtime/Base

     scriptcontextbase.h                     ScriptContextBase.h
     ThreadContextTLSEntry.cpp               ThreadContextTlsEntry.cpp
     ThreadContextTLSEntry.h                 ThreadContextTlsEntry.h
     threadservicewrapper.h                  ThreadServiceWrapper.h


lib/Runtime/ByteCode                =>  Lib/Runtime/ByteCode

     AsmJSByteCodeDumper.cpp                 AsmJsByteCodeDumper.cpp
     AsmJSByteCodeDumper.h                   AsmJsByteCodeDumper.h
     BackEndOpcodeAttr.cpp                   BackendOpCodeAttr.cpp
     BackEndOpcodeAttr.h                     BackendOpCodeAttr.h
     ByteCodeAPI.h                           ByteCodeApi.h
     byteCodeCacheReleaseFileVersion.h       ByteCodeCacheReleaseFileVersion.h
     Opcodes.cpp                             OpCodes.cpp


lib/Runtime/Language                =>  Lib/Runtime/Language

     asmjs.cpp                               AsmJs.cpp
     AsmJS.h                                 AsmJs.h
     AsmJsBuiltinNames.h                     AsmJsBuiltInNames.h
     AsmJSBytecodeGenerator.cpp              AsmJsByteCodeGenerator.cpp
     AsmJSBytecodeGenerator.h                AsmJsByteCodeGenerator.h
     AsmJSCodeGenerator.cpp                  AsmJsCodeGenerator.cpp
     AsmJSCodeGenerator.h                    AsmJsCodeGenerator.h
     AsmJSEncoder.cpp                        AsmJsEncoder.cpp
     AsmJSEncoder.h                          AsmJsEncoder.h
     AsmJSEncoder.inl                        AsmJsEncoder.inl
     AsmJSEncoderHandler.inl                 AsmJsEncoderHandler.inl
     AsmJSJitTemplate.h                      AsmJsJitTemplate.h
     AsmJSLink.cpp                           AsmJsLink.cpp
     AsmJSLink.h                             AsmJsLink.h
     AsmJSModule.cpp                         AsmJsModule.cpp
     AsmJSModule.h                           AsmJsModule.h
     AsmJSTypes.cpp                          AsmJsTypes.cpp
     AsmJSTypes.h                            AsmJsTypes.h
     AsmJSUtils.cpp                          AsmJsUtils.cpp
     AsmJSUtils.h                            AsmJsUtils.h
     SIMDBool16x8Operation.cpp               SimdBool16x8Operation.cpp
     SIMDBool16x8Operation.h                 SimdBool16x8Operation.h
     SIMDBool16x8OperationX86X64.cpp         SimdBool16x8OperationX86X64.cpp
     SIMDBool32x4Operation.cpp               SimdBool32x4Operation.cpp
     SIMDBool32x4Operation.h                 SimdBool32x4Operation.h
     SIMDBool32x4OperationX86X64.cpp         SimdBool32x4OperationX86X64.cpp
     SIMDBool8x16Operation.cpp               SimdBool8x16Operation.cpp
     SIMDBool8x16Operation.h                 SimdBool8x16Operation.h
     SIMDBool8x16OperationX86X64.cpp         SimdBool8x16OperationX86X64.cpp
     SIMDFloat32x4Operation.cpp              SimdFloat32x4Operation.cpp
     SIMDFloat32x4Operation.h                SimdFloat32x4Operation.h
     SIMDfloat32x4OperationX86X64.cpp        SimdFloat32x4OperationX86X64.cpp
     SIMDFloat64x2Operation.cpp              SimdFloat64x2Operation.cpp
     SIMDFloat64x2Operation.h                SimdFloat64x2Operation.h
     SIMDfloat64x2OperationX86X64.cpp        SimdFloat64x2OperationX86X64.cpp
     SIMDInt16x8Operation.cpp                SimdInt16x8Operation.cpp
     SIMDInt16x8Operation.h                  SimdInt16x8Operation.h
     SIMDInt16x8OperationX86X64.cpp          SimdInt16x8OperationX86X64.cpp
     SIMDInt32x4Operation.cpp                SimdInt32x4Operation.cpp
     SIMDInt32x4Operation.h                  SimdInt32x4Operation.h
     SIMDInt32x4OperationX86X64.cpp          SimdInt32x4OperationX86X64.cpp
     SIMDInt8x16Operation.cpp                SimdInt8x16Operation.cpp
     SIMDInt8x16Operation.h                  SimdInt8x16Operation.h
     SIMDInt8x16OperationX86X64.cpp          SimdInt8x16OperationX86X64.cpp
     SIMDUint16x8Operation.cpp               SimdUint16x8Operation.cpp
     SIMDUint16x8Operation.h                 SimdUint16x8Operation.h
     SIMDUint16x8OperationX86X64.cpp         SimdUint16x8OperationX86X64.cpp
     SIMDUInt32x4Operation.cpp               SimdUint32x4Operation.cpp
     SIMDUInt32x4Operation.h                 SimdUint32x4Operation.h
     SIMDUInt32x4OperationX86X64.cpp         SimdUint32x4OperationX86X64.cpp
     SIMDUint8x16Operation.cpp               SimdUint8x16Operation.cpp
     SIMDUint8x16Operation.h                 SimdUint8x16Operation.h
     SIMDUint8x16OperationX86X64.cpp         SimdUint8x16OperationX86X64.cpp
     SIMDUtils.cpp                           SimdUtils.cpp
     SIMDUtils.h                             SimdUtils.h


lib/Runtime/Language/amd64          =>  Lib/Runtime/Language/amd64

     AsmJSJitTemplate.cpp                    AsmJsJitTemplate.cpp
     stackframe.cpp                          StackFrame.cpp
     stackframe.h                            StackFrame.h
     stackframe.inl                          StackFrame.inl


lib/Runtime/Language/arm            =>  Lib/Runtime/Language/arm

     stackframe.cpp                          StackFrame.cpp
     stackframe.h                            StackFrame.h


lib/Runtime/Language/arm64          =>  Lib/Runtime/Language/arm64

     stackframe.cpp                          StackFrame.cpp
     stackframe.h                            StackFrame.h


lib/Runtime/Language/i386           =>  Lib/Runtime/Language/i386

     AsmJSJitTemplate.cpp                    AsmJsJitTemplate.cpp
     stackframe.cpp                          StackFrame.cpp
     stackframe.h                            StackFrame.h


lib/Runtime/Library                 =>  Lib/Runtime/Library

     dataview.cpp                            DataView.cpp
     dataview.h                              DataView.h
     JavascriptSIMDBool16x8.cpp              JavascriptSimdBool16x8.cpp
     JavascriptSIMDBool16x8.h                JavascriptSimdBool16x8.h
     JavascriptSIMDBool32x4.cpp              JavascriptSimdBool32x4.cpp
     JavascriptSIMDBool32x4.h                JavascriptSimdBool32x4.h
     JavascriptSIMDBool8x16.cpp              JavascriptSimdBool8x16.cpp
     JavascriptSIMDBool8x16.h                JavascriptSimdBool8x16.h
     JavascriptSIMDFloat32x4.cpp             JavascriptSimdFloat32x4.cpp
     JavascriptSIMDFloat32x4.h               JavascriptSimdFloat32x4.h
     JavascriptSIMDFloat64x2.cpp             JavascriptSimdFloat64x2.cpp
     JavascriptSIMDFloat64x2.h               JavascriptSimdFloat64x2.h
     JavascriptSIMDInt16x8.cpp               JavascriptSimdInt16x8.cpp
     JavascriptSIMDInt16x8.h                 JavascriptSimdInt16x8.h
     JavascriptSIMDInt32x4.cpp               JavascriptSimdInt32x4.cpp
     JavascriptSIMDInt32x4.h                 JavascriptSimdInt32x4.h
     JavascriptSIMDInt8x16.cpp               JavascriptSimdInt8x16.cpp
     JavascriptSIMDInt8x16.h                 JavascriptSimdInt8x16.h
     JavascriptSIMDUint16x8.cpp              JavascriptSimdUint16x8.cpp
     JavascriptSIMDUint16x8.h                JavascriptSimdUint16x8.h
     JavascriptSIMDUInt32x4.cpp              JavascriptSimdUint32x4.cpp
     JavascriptSIMDUInt32x4.h                JavascriptSimdUint32x4.h
     JavascriptSIMDUint8x16.cpp              JavascriptSimdUint8x16.cpp
     JavascriptSIMDUint8x16.h                JavascriptSimdUint8x16.h
     javascripttypednumber.cpp               JavascriptTypedNumber.cpp
     javascripttypednumber.h                 JavascriptTypedNumber.h
     moduleroot.cpp                          ModuleRoot.cpp
     moduleroot.h                            ModuleRoot.h
     SIMDBool16x8Lib.cpp                     SimdBool16x8Lib.cpp
     SIMDBool16x8Lib.h                       SimdBool16x8Lib.h
     SIMDBool32x4Lib.cpp                     SimdBool32x4Lib.cpp
     SIMDBool32x4Lib.h                       SimdBool32x4Lib.h
     SIMDBool8x16Lib.cpp                     SimdBool8x16Lib.cpp
     SIMDBool8x16Lib.h                       SimdBool8x16Lib.h
     SIMDFloat32x4Lib.cpp                    SimdFloat32x4Lib.cpp
     SIMDFloat32x4Lib.h                      SimdFloat32x4Lib.h
     SIMDFloat64x2Lib.cpp                    SimdFloat64x2Lib.cpp
     SIMDFloat64x2Lib.h                      SimdFloat64x2Lib.h
     SIMDInt16x8Lib.cpp                      SimdInt16x8Lib.cpp
     SIMDInt16x8Lib.h                        SimdInt16x8Lib.h
     SIMDInt32x4Lib.cpp                      SimdInt32x4Lib.cpp
     SIMDInt32x4Lib.h                        SimdInt32x4Lib.h
     SIMDInt8x16Lib.cpp                      SimdInt8x16Lib.cpp
     SIMDInt8x16Lib.h                        SimdInt8x16Lib.h
     SIMDUint16x8Lib.cpp                     SimdUint16x8Lib.cpp
     SIMDUint16x8Lib.h                       SimdUint16x8Lib.h
     SIMDUInt32x4Lib.cpp                     SimdUint32x4Lib.cpp
     SIMDUInt32x4Lib.h                       SimdUint32x4Lib.h
     SIMDUint8x16Lib.cpp                     SimdUint8x16Lib.cpp
     SIMDUint8x16Lib.h                       SimdUint8x16Lib.h
     typedArrayEnumerator.cpp                TypedArrayEnumerator.cpp
     typedArrayEnumerator.h                  TypedArrayEnumerator.h


lib/Runtime/Library/amd64           =>  Lib/Runtime/Library/amd64

     javascriptfunctiona.asm                 JavascriptFunctionA.asm


lib/Runtime/Library/InJavascript    =>  Lib/Runtime/Library/InJavascript

     intl.js.bc.32b.h                        Intl.js.bc.32b.h
     intl.js.bc.64b.h                        Intl.js.bc.64b.h

If code such as the snippet below is run under the debugger, the host is not notified of the thrown exception via JsDiagDebugEventRuntimeException:

(async () => {
    await null;
    throw new Error();
})();

Note that moving the throw before the await makes the debugger able to intercept it again. This issue occurs because of an AutoCatchHandlerExists being in scope when the promise reaction is run: https://github.com/Microsoft/ChakraCore/blob/ad79be8811806622190b55266c73f20b600ed46c/lib/Runtime/Library/JavascriptPromise.cpp#L1037-L1051

The fix is to not construct an AutoCatchHandlerExists in this situation. While the exception is indeed caught and squelched, it's not actually swallowed but converted to a promise rejection, which may well be fatal depending on the host. We need the debugger to be able to intercept it before that happens so the user can view the callstack, variables, etc. before the stack is unwound.

There is no test coverage for this yet, I will try to add some in the next day or so.

Fixes #4630.

I have convinced myself, that I am looking at an optimization issue in EdgeHTML 14. The most annoying part is, that it doesn't reproduce when the F12 tools are open.

I'm building an application including the new d3 version 4, angular2, and core-js' es6 modules (amongst other things). Everything is bundled with webpack. I have tried to reduce the problem by editing the webpack-generated JavaScript and removing some of the moving parts, but that seems to fix it. I'll try to describe my environment, some code snippets etc., but I wouldn't expect this to be easy to reproduce.

The problem appears in the range function, more exactly in the range = slice.call(_) assignment in the first branch. slice is imported from array.js and is just Array.prototype.slice.

The first three times this function gets called (when arguments.length === 1, an array with two elements), the .call(_) returns the expected copy of that array. The fourth time, range gets function slice() { [native code] } assigned instead.

With webpack in the picture, here is what the browser actually executes:

/* harmony import */ var __WEBPACK_IMPORTED_MODULE_2__array__ = __webpack_require__(22);

// […]

  scale.range = function(_) {
    return arguments.length ? (range = __WEBPACK_IMPORTED_MODULE_2__array__["a" /* slice */].call(_), rescale()) : range.slice();
  };

or my debug version:

  scale.range = function (_) {
      var result;
      if (arguments.length) {
          console.log('change!');
          console.log(range);
          range = __WEBPACK_IMPORTED_MODULE_2__array__["a" /* slice */].call(_);
          console.log(range);
          result = rescale();
      }
      else {
          result = range.slice();
      }
      return result;
  };

I have rerouted console.log() and console.error() to append the logs to a DOM element, so I have a chance to see what happened when I open the F12 tools after things blew up. The log is:

Angular 2 is running in the development mode. Call enableProdMode() to enable the production mode.
change!
0,1
278.3333333333333,0
change!
0,1
0,885
change!
0,1
278.3333333333333,0
change!
0,1
function slice() { [native code] }

Continuing the program executing then runs into an exception when the range function is called without arguments:

TypeError: Object doesn't support property or method 'slice'
  at scale.range (…)
  at …

I have verified, that the webpack imported slice function is always the same. I have tried to inline the webpack infrastructure, but that fixes the problem. The same code works beautifully in Chrome. The code works (much slower) when the F12 are open.

Help!

Fixes #254

This is a rough implementation based on a combination of getOwnPropertyDescriptor as a reference, and what I could intuit from a day of digging.

I'd appreciate as much feedback as possible on how I did this. I used existing functions I was aware of when possible, but if there are better choices of helper functions here, please do let me know. I also did the tests all in javascript (similar to what I could find on getOwnPropertyDescriptor), and tried to make them as thorough as possible.

When out of memory happens, exception value reference doesn’t have a stack property or stack is undefined.

This update converts exception value reference to string in such case to produce a meaningful output.

To test the issue, run script below with ch:

var arr = [];
for(var i=0;i<1e9;i++)
 arr[i]  = i%9;

print(“-> " + arr[Date.now()%1e9]);

This is for general discussions on the cross-platfrom effort. Please open individual issues for tasks clearly identified from this discussion, or PRs if they are small and you can do them quickly.

Please see the Roadmap for our cross-platform checklist and progress.

Related issues:

• [ ] #197
• [ ] #198
• [ ] #200

See https://github.com/caitp/ChakraCore/issues/1 for some examples of work items we might want to consider.

We have icu-intl is enabled by default now. ICU-intl impl. uses couple of ICU API those are not available on ICU 52. Although we don't say we officially support any of these, we could simply feature detect and pick API we can use and keep the number of platforms we support.

IMHO we shouldn't break our default build with Ubuntu 14LTS

Issue

According to es spec Object.defineProperty should throw if internal [[DefineOwnProperty]] returns false-ish. This happens specifically if the defineProperty proxy trap returns false (See #6505).

Changes

• Throw TypeError in JavascriptObject::EntryDefineProperty if DefineOwnPropertyHelper returns false-ish
• Changed content of JSERR_ProxyHandlerReturnedFalse
• Routed PropertyOperationFlags through the call stack

Open questions

• Why is test\Bugs\misc_bugs.js tagged with exclude_windows?

@rhuanjl

Related to PR #5412 Fixes #6505

I am using Visual Studio 2015.

When I try to debug my application, it does not step into the Chakra code - I have built the Chakra solution on the same machine and the Debug Output window indicates that the symbols for ChakraCore.dll have been loaded.

If I locate the source file in chakra where a particular function is, and put a break point there, the debugger does stop there and lets me debug the code .. different matter that debugging c++ is not easy for me.

I had to debug in the context of an issue .. a script was passing a native function a boolean object where a boolean value was expected. The native function determined that that argument was an instance of the Boolean object and so tried to convert that to the boolean value ..

Tried with ConvertValueToBoolean - that always returns a value of false. Tried calling the valueOf function of the Boolean object - that returns an object and not a value. But ConvertValueToString returns the correct value.

Thanks K

After the MSVC team implemented P2468R2 The Equality Operator You Are Looking For, we got an error compiling ChakraCore with /std:c++latest on MSVC, now it is fixed.

Error message: F:\gitP\microsoft\ChakraCore\lib\Runtime\Language\SimdUtils.h(70,16): error C2666: '_SIMDValue::operator ==': overloaded functions have similar conversions F:\gitP\microsoft\ChakraCore\lib\Runtime\Language\SimdUtils.h(48,10): note: could be 'bool _SIMDValue::operator ==(const _SIMDValue &)' C:\Program Files (x86)\Windows Kits\10\include\10.0.22618.0\shared\guiddef.h(192,15): note: or 'bool operator ==(const GUID &,const GUID &)' F:\gitP\microsoft\ChakraCore\lib\Runtime\Language\SimdUtils.h(48,10): note: or 'bool _SIMDValue::operator ==(const _SIMDValue &)' [synthesized expression 'y == x'] C:\Program Files (x86)\Windows Kits\10\include\10.0.22618.0\shared\guiddef.h(192,15): note: or 'bool operator ==(const GUID &,const GUID &)' [synthesized expression 'y == x'] F:\gitP\microsoft\ChakraCore\lib\Runtime\Language\SimdUtils.h(70,16): note: while trying to match the argument list '(_SIMDValue, _SIMDValue)'

On ARM macOS (all versions), ./build.sh --icu=/opt/homebrew/opt/icu4c/include -j=4 -y --lto-thin leads to:

CMake Error at CMakeLists.txt:47 (message):
    Couldn't detect target processor, try `--arch` argument with build.sh

Using Object.setPrototypeOf may result in instanceof returning the wrong result, as the IsInstInlineCache is not invalidated (See #5915).

Steps:

• Iterate over the existing function -> IsInstInlineCache[] dictionary using the new ThreadContext.MapIsInstInlineCaches function
• Walk the prototype chain to check for the cached type
• Ignore if type is null https://github.com/chakra-core/ChakraCore/blob/0cfe82d202c0298f4bbde06070f8dbf9099946c8/lib/Runtime/Library/JavascriptFunction.cpp#L3365-L3367
• If found, remove from list using ThreadContext.UnregisterIsInstInlineCache (corrects next) and ...
• Invalidate using memset

I couldn't come up with a scenario where the function could be affected (x instance of function). Therefore, the following code should not be necessary (not included in latest commit): https://github.com/chakra-core/ChakraCore/blob/2d7e459c40cbf12efff28e00811dc768b7d52f65/lib/Runtime/Library/JavascriptObject.cpp#L255-L272

@rhuanjl

Fixes #5915

Ubuntu18 tests will already fail during scheduled brownout. They will be fully unsupported by 4/1/2023.

See https://github.com/actions/runner-images/issues/6002, #6831. PR: https://github.com/chakra-core/ChakraCore/pull/6833