If we encounter another error while handling an error, the best thing to do would be to abort with a fatal error message. We'll need a napi_fatal_error() or similar API for that, which doesn't exist yet. Currently the error-handling code just has asserts, which are only helpful in debug mode.

See also:

• Fix reporting of API error messages #43 (comment)
• Make Error a persistent reference #32 (comment)
• Can't use node::FatalError() abi-stable-node#232