method
tls.TLSSocket.flatMap
This method returns a new stream by applying the given callback to each chunk of the stream and then flattening the result.
It is possible to return a stream or another iterable or async iterable from fn and the result streams will be merged (flattened) into the returned stream.
@param fn
a function to map over every chunk in the stream. May be async. May be a stream or generator.
@returns
a stream flat-mapped with the function fn.