Compatibility PR for node 12

[renanccastro]

Please, disregard the changes to the package.json name, if you want it merged I can change it back :)

This PR makes this lib compatible with node 12, based on the libxmljs original PR.

There is also work from @alexdee2007 fork, so also thanks!

Thanks for the good work!!

[sclarson]

Any chance you want to update this for Node 14 compatibility?

[andreafalzetti]

Any update on this? Does this lib work with Node 12?

[renanccastro]

Seems like the author is not active anymore.
But, my fork is working with node 12. it's published on npm too.

@sclarson I do have plans to have node 14 compatibility. Should be done in the following months.

[lognaturel]

Thanks for this, @renanccastro! I take it this is what was released at https://www.npmjs.com/package/node1-libxmljsmt, is that right?

You may have seen me asking related questions at albanm/node-libxslt#83. Thanks for pushing both of these libraries forward. Are you still considering an update for newer Node versions? Or perhaps you'd be able to give some guidance for others who might be interested in looking further into this but are unfamiliar with the tooling?

It looks like both libraries use https://github.com/nodejs/nan which should hopefully make most of the changes to support Node 14 pretty mechanical, does that sound right? Any advice on strategy would be appreciated. As far as I can tell, Node 16 support may require a NAN upgrade to provide V8 9.0 support (nodejs/nan#910).

[rchipka]

Multi-threading, Node 12+, and Typescript types are all coming to the main repo.

Last thing remaining is further fine-tuning the new refcounting strategy to remove any leaks or segfaults.

[lognaturel]

Thanks so much, @rchipka, that looks like a very exciting overhaul indeed!!