feat: add node 15 support

[ewanharris]

I ran the scripts/abi_crosswalk.js script to update the abi_crosswalk file

Closes #517

[piranna]

There are some errors on CI, can you review them? I'm having problems with node-pre-gyp in Node.js 15...

[ewanharris]

@piranna The failures on this PR look to be identical to the current state of the master branch. I tested this change with a native module my company uses and the module built fine for me, what issues are you having?

Edit:

The failing tests look to be due to a change in node-gyp between npm@5 ([email protected])and npm@6 ([email protected]), it appears that passing the invalid python flag down no longer works

Edit 2:

I think it's down to improved python detection in node-gyp introduced by nodejs/node-gyp/pull/1582, filed #519 to adapt to those changes

[piranna]

what issues are you having?

With node-canvas, after upgrading to Node.js 15 (and by extension, npm 7), it told me that Node.js API versions are incompatible. Rebuild didn't help, so I fully deleted both node_modules and build directories, and when running npm install it fails since it says there's no node-pre-gyp executable, and in fact the node_modules/.bin folder doesn't exists...

[ewanharris]

@piranna, you could try either patching node_modules/node-pre-gyp/lib/util/abi_crosswalk.json with the changes you see in this PR to get it building or downgrade Node.js to 14.x until this PR is merged

[piranna]

@piranna, you could try either patching node_modules/node-pre-gyp/lib/util/abi_crosswalk.json with the changes you see in this PR to get it building or downgrade Node.js to 14.x until this PR is merged

I'm not in a hurry, I can wait :-)

[ewanharris]

Closing as this was done by #520