== Why is this an issue? Empty character classes in regular expressions don't match anything. This is likely a sign that the regular expression does not work as intended. === Noncompliant code example [source,javascript] ---- /^foo[]/.test("foobar"); // false ---- === Compliant solution [source,javascript] ---- /^foo/.test("foobar"); // true ---- ifdef::env-github,rspecator-view[] ''' == Implementation Specification (visible only on this page) === Message Rework this empty character class that doesn't match anything. ''' == Comments And Links (visible only on this page) include::../comments-and-links.adoc[] endif::env-github,rspecator-view[]