The sequence of napi_open_callback_scope(),
napi_call_function(), and napi_close_callback_scope() functions calls
executes the provided JS code and all functions enqueued by
process.nextTick() and Promises during this execution.
The problem is caused by Promises' inconsistency.
The 'date' event could have been triggered before the user has started
listening for it. To resolve the issue, we override the 'on' method of
the request's emitter.
This fixes two issues:
- values for mutiple header fields with the same name
passed as arrays were converted to string;
- the type of field value wasn't preserved as required
by specification.
- Fixed handling of the "options" parameter in Socket() constructor;
- Now the connect() method returns "this";
- Deduplicated the address() method;
- Added missing "callback" argument to the end() method;
- Now the destroy() method returns "this";
- Added "timeout" argument type check in the setTimeout() method.
