Crashes when debugging with VSCode

[hillin]

Issue or Feature

When debugging a server side node app with VSCode, whenever a breakpoint hits in a context with a Canvas variable, the node process crashes.

The crash message:

Microsoft Visual C++ Runtime Library

Assertion failed!

Program: ...s\canvas-prebuilt\canvas\build\Release\canvas.node
File: c:\projects\node-canvas-prebuilt\no...\nan_obj..._wrap.h
Line: 33

Expression: object->InternalFieldCount() > 0

For information on how your program can cause an assertion
failure, see the Visual C++ documentation on asserts

Steps to Reproduce

1. Create a server nodejs side app, I use expressjs
2. Do something with a Canvas
3. Add a breakpoint in VSCode where the ambient contains the Canvas
4. Debug and try to make the breakpoint hit

Your Environment

• Version of node-canvas: 1.6.5-prerelease.1 (canvas-prebuilt)
• Environment: node v8.7.0 on Windows 10 version 1709, VSCode 1.17.2

[hillin]

Sorry, seems this is a duplicate of #855. Strangely I haven't found it when I did a rough search. Closing.

[zbjornson]

@hillin can you try with canvas@next please? I think it's fixed there.

[hillin]

@zbjornson thanks Zach. For some reason I have to use a prebuilt version in our production environment, but canvas-prebuilt hasn't caught up yet. So I guess I'll just walk around this issue for now and try it later when canvas-prebuilt has a new release.