支持 mac

npm-packages/mac-v2.4.x/canvas/changes

@@ -0,0 +1,19 @@
+toBuffer and other canvas methods were static and unwrapped
+the this arg. this seemed weird. they are now instance
+methods since that's how object wrap works, XXX add
+instanceof checks?
+
+node-canvas no lunger flushes microtasks when calling stream
+cbs XXX wait now that I say it that sounds wrong?
+
+we don't need CHECK_RECEIVER anymore? dbl check that?
+
+TODO: check changes from As<X> to AsX. bad assumption.
+
+dbl check try catch changes?
+
+Error is now CairoError
+
+global this in all callbacks, streamPNGSync now flushes microtasks
+
+streamPDF uses MakeCallback, not runInAsyncScope