console.log should be doing ToString() on errors so we get the message
we need to disable the itanium exception stuff even for simulator usage, not just on device.
mark class1 and class2 as XFAIL until I can update to a node with working ES6 Map
fix remaining fallout of 64bit refactoring causing esprima tests to fail
if the length was specified we should throw if the arraybuffer doesn't have enough space