Haxe 4.3 `@:enum abstract` is deprecated

[johhnry]

Hi,

Using hxnodejs 12.1.0 on Haxe 4.3.1 gives the following warnings when compiling:

.../.haxelib/hxnodejs/12,1,0/src/js/node/ChildProcess.hx:139: characters 1-7 : Warning : (WDeprecated) `@:enum abstract` is deprecated in favor of `enum abstract`
.../.haxelib/hxnodejs/12,1,0/src/js/node/ChildProcess.hx:159: characters 1-7 : Warning : (WDeprecated) `@:enum abstract` is deprecated in favor of `enum abstract`
.../.haxelib/hxnodejs/12,1,0/src/js/node/child_process/ChildProcess.hx:38: characters 1-7 : Warning : (WDeprecated) `@:enum abstract` is deprecated in favor of `enum abstract`
.../.haxelib/hxnodejs/12,1,0/src/js/node/events/EventEmitter.hx:35: characters 1-7 : Warning : (WDeprecated) `@:enum abstract` is deprecated in favor of `enum abstract`
.../.haxelib/hxnodejs/12,1,0/src/js/node/stream/Readable.hx:40: characters 1-7 : Warning : (WDeprecated) `@:enum abstract` is deprecated in favor of `enum abstract`
.../.haxelib/hxnodejs/12,1,0/src/js/node/stream/Writable.hx:43: characters 1-7 : Warning : (WDeprecated) `@:enum abstract` is deprecated in favor of `enum abstract`
.../.haxelib/hxnodejs/12,1,0/src/js/node/Fs.hx:171: characters 1-7 : Warning : (WDeprecated) `@:enum abstract` is deprecated in favor of `enum abstract`
.../.haxelib/hxnodejs/12,1,0/src/js/node/Fs.hx:187: characters 1-7 : Warning : (WDeprecated) `@:enum abstract` is deprecated in favor of `enum abstract`
.../.haxelib/hxnodejs/12,1,0/src/js/node/fs/FSWatcher.hx:36: characters 1-7 : Warning : (WDeprecated) `@:enum abstract` is deprecated in favor of `enum abstract`
.../.haxelib/hxnodejs/12,1,0/src/js/node/fs/FSWatcher.hx:44: characters 1-7 : Warning : (WDeprecated) `@:enum abstract` is deprecated in favor of `enum abstract`
.../.haxelib/hxnodejs/12,1,0/src/js/node/fs/ReadStream.hx:28: characters 1-7 : Warning : (WDeprecated) `@:enum abstract` is deprecated in favor of `enum abstract`
.../.haxelib/hxnodejs/12,1,0/src/js/node/fs/WriteStream.hx:28: characters 1-7 : Warning : (WDeprecated) `@:enum abstract` is deprecated in favor of `enum abstract`
.../.haxelib/hxnodejs/12,1,0/src/js/node/Process.hx:41: characters 1-7 : Warning : (WDeprecated) `@:enum abstract` is deprecated in favor of `enum abstract`

Thanks!