capture the final output from node processes to help diagnose unexpected node exits

[blushingpenguin]

This should help with #60 - for example I now get something like the output below when node runs out of heap.

2020-06-23 12:10:38.815 +00:00 [Information] Jering.Javascript.NodeJS.HttpNodeJSService:
<--- Last few GCs --->

[56928:00000203B5E6B670]     7425 ms: Scavenge 501.7 (510.4) -> 501.5 (511.1) MB, 3.4 / 0.0 ms  (average mu = 0.090, current mu = 0.060) allocation failure
[56928:00000203B5E6B670]     7432 ms: Scavenge 502.4 (511.1) -> 502.3 (516.9) MB, 4.5 / 0.0 ms  (average mu = 0.090, current mu = 0.060) allocation failure


<--- JS stacktrace --->

==== JS stack trace =========================================

    0: ExitFrame [pc: 00007FF6F67A6C4D]
    1: StubFrame [pc: 00007FF6F67A7B7D]
    2: StubFrame [pc: 00007FF6F67EB7C1]
Security context: 0x03740c9008d1 <JSObject>
    3: repeat [000003740C9163A1](this=0x00df02b87969 <String[#1]: a>,1048576)
    4: appReceived [000001AB9679FD71] [C:\dev\Vendeq.Integrations.Api\Vendeq.Integrations.Jobs.Generic\vendeq.js:~37] [pc=0000033B848D041D](this=0x01ab9679fe01 <JSRunner map = 000002A2CE827949>,0x01ab...


2020-06-23 12:10:38.815 +00:00 [Error] Jering.Javascript.NodeJS.HttpNodeJSService: FATAL ERROR: Ineffective mark-compacts near heap limit Allocation failed - JavaScript heap out of memory

Writing Node.js report to file: report.20200623.131038.56928.0.001.json
Node.js report completed
 1: 00007FF6F5B9D1EF napi_wrap+113103
 2: 00007FF6F5B3CA66 public: bool __cdecl v8::base::CPU::has_sse(void)const __ptr64+64982
 3: 00007FF6F5B3D8F3 public: bool __cdecl v8::base::CPU::has_sse(void)const __ptr64+68707
 4: 00007FF6F6359BBE private: void __cdecl v8::Isolate::ReportExternalAllocationLimitReached(void) __ptr64+94
 5: 00007FF6F6341C91 public: class v8::SharedArrayBuffer::Contents __cdecl v8::SharedArrayBuffer::Externalize(void) __ptr64+833
 6: 00007FF6F620E1EC public: static void __cdecl v8::internal::Heap::EphemeronKeyWriteBarrierFromCode(unsigned __int64,unsigned __int64,class v8::internal::Isolate * __ptr64)+1436
 7: 00007FF6F6219420 public: void __cdecl v8::internal::Heap::ProtectUnprotectedMemoryChunks(void) __ptr64+1312
 8: 00007FF6F6215F44 public: static bool __cdecl v8::internal::Heap::PageFlagsAreConsistent(class v8::internal::HeapObject)+3204
 9: 00007FF6F620B743 public: bool __cdecl v8::internal::Heap::CollectGarbage(enum v8::internal::AllocationSpace,enum v8::internal::GarbageCollectionReason,enum v8::GCCallbackFlags) __ptr64+1283
10: 00007FF6F6209DB4 public: void __cdecl v8::internal::Heap::AddRetainedMap(class v8::internal::Handle<class v8::internal::Map>) __ptr64+2452
11: 00007FF6F622AFBD public: class v8::internal::Handle<class v8::internal::HeapObject> __cdecl v8::internal::Factory::NewFillerObject(int,bool,enum v8::internal::AllocationType,enum v8::internal::AllocationOrigin) __ptr64+61
12: 00007FF6F5F91871 public: class v8::internal::interpreter::JumpTableTargetOffsets::iterator & __ptr64 __cdecl v8::internal::interpreter::JumpTableTargetOffsets::iterator::operator=(class v8::internal::interpreter::JumpTableTargetOffsets::iterator && __ptr64) __ptr64+1665
13: 00007FF6F67A6C4D public: virtual bool __cdecl v8::internal::SetupIsolateDelegate::SetupHeap(class v8::internal::Heap * __ptr64) __ptr64+546637
14: 00007FF6F67A7B7D public: virtual bool __cdecl v8::internal::SetupIsolateDelegate::SetupHeap(class v8::internal::Heap * __ptr64) __ptr64+550525
15: 00007FF6F67EB7C1 public: virtual bool __cdecl v8::internal::SetupIsolateDelegate::SetupHeap(class v8::internal::Heap * __ptr64) __ptr64+828097
16: 00007FF6F67EB8E9 public: virtual bool __cdecl v8::internal::SetupIsolateDelegate::SetupHeap(class v8::internal::Heap * __ptr64) __ptr64+828393
17: 0000033B848D041D

[codecov]

Codecov Report

Merging #84 into master will increase coverage by 0.00%.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##           master      #84   +/-   ##
=======================================
  Coverage   97.02%   97.03%           
=======================================
  Files          23       23           
  Lines         807      809    +2     
=======================================
+ Hits          783      785    +2     
  Misses         24       24           

Impacted Files	Coverage Δ
...rviceImplementations/OutOfProcess/NodeJSProcess.cs	95.14% <100.00%> (+0.09%)	⬆️

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[JeremyTCD]

Hey Mark! Sorry for the slow response.

Great catch. Current behavior is definitely erroneous, no reason to ignore the last message.

Tests look great. Will double check everything and release a new version tomorrow.

Hopefully this helps with #60.

[JeremyTCD]

Kindly add yourself to the ReadMe contributors section. Once that's done I'll merge and publish 5.4.1.

[JeremyTCD]

Released 5.4.1 🚀. Thanks for contributing!