When a variable is assigned an ``++undefined++`` or ``++null++`` value, it has no properties. Trying to access properties of such a variable anyway results in a ``++TypeError++``, causing abrupt termination of the script if the error is not caught in a ``++catch++`` block. But instead of ``++catch++``-ing this condition, it is best to avoid it altogether.

== Noncompliant Code Example

----
if (x === undefined) {
  console.log(x.bar); // Noncompliant; TypeError will be thrown
}
----

include::../see.adoc[]

ifdef::env-github,rspecator-view[]
'''
== Comments And Links
(visible only on this page)

include::comments-and-links.adoc[]
endif::env-github,rspecator-view[]
