Investigate node 12 issues

[s1hofmann]

This issue is linked to nut-js#98 regarding segfaults on macOS using the current node LTS version (lts/erbium).

According to an issue comment, this behaviour also shows in RobotJS, which libnut is based off.
It has been reported that when using node v12.12, no segfault happens

Actions to perform:

• Root cause analysis on why segfaults occur on node > v12.12
• Investigate possible solutions

[s1hofmann]

Update:

• Root cause:
  So far I've been able to debug the affected call. CGEventCreateKeyboardEvent(...) on line 125 in keypress.c.
  In my tests I also realised that the error occurs in node v12.13.1 and above. No segfaults occur up until v12.13.0.

• Investigate possible solutions: WIP

[s1hofmann]

Simple debug snippet:

const libnut = require(".");

libnut.keyTap("enter");
console.log("done");

[s1hofmann]

Update:

• Root cause: An update to libuv introduced with node v12.13.1 causes this issue. It persists up until node v13.6.0. node v13.7.0 introduced an update to libuv v1.34.1, which resolved the issue again. Backporting this version to latest lts/erbium (v12.16.0) also solves the issue here.

• Possible solution: Unfortunately, we will have to wait for libuv v1.34.1 to reach the node 12 release line.

[s1hofmann]

Corresponding node issue: nodejs/node#31623

[s1hofmann]

Tested with build of 12.16.2-proposal, issue is resolved.