Disallow duplicate @import
rules.
@import "a.css";
@import "a.css";
/** ↑
* These are duplicates */
The message
secondary option can accept the arguments of this rule.
The following patterns are considered problems:
@import 'a.css';
@import 'a.css';
@import url("a.css");
@import url("a.css");
@import "a.css";
@import 'a.css';
@import "a.css";
@import 'b.css';
@import url(a.css);
The following patterns are not considered problems:
@import "a.css";
@import "b.css";
@import url('a.css') projection;
@import url('a.css') tv;