Experimental
Reads the value at a $event.a.b path out of an event payload. Returns undefined when any segment is missing — there is no error channel and no default, matching the standard's "substitution, not expression" posture.
$event.a.b
undefined
Reads the value at a
$event.a.bpath out of an event payload. Returnsundefinedwhen any segment is missing — there is no error channel and no default, matching the standard's "substitution, not expression" posture.