Empty character classes should not be used in regular expressions

• BAD_REGEXP
• Error
• Medium
• No tags

This rule applies when a regular expression has empty character classes.

Because empty character classes '[]' in regular expressions do not match anything, they are not likely to be a programmer's intent.

Noncompliant Code Example

var foo = /^abc[]/;

Compliant Code Example

var foo = /^abc\[\]/;

Version

This rule was introduced in DeepScan 1.0.0-alpha.

See

• Regular Expressions