s the result.</p>
<p>For each data event, <code>o</code>, in this stream, the returned stream
provides a data event with the value <code>convert(o)</code>.
If <code>convert</code> throws, the returned stream reports it as an error
event instead.</p>
<p>Error and done events are passed through unchanged to the returned stream.</p>
<p>The returned stream is a broadcast stream if this stream is.
The <code>convert</code> function is called once per data event per listener.
If a broadcast stream is listened to m