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Using regex

You can use regex in the ignore* secondary options and following classes of rules:

  • *-allowed-list
  • *-disallowed-list
  • *-pattern

Enforce a case

You can use the regex that corresponds to your chosen case convention:

  • kebab-case: ^([a-z][a-z0-9]*)(-[a-z0-9]+)*$
  • lowerCamelCase: ^[a-z][a-zA-Z0-9]+$
  • snake_case: ^([a-z][a-z0-9]*)(_[a-z0-9]+)*$
  • UpperCamelCase: ^[A-Z][a-zA-Z0-9]+$

For example, for lowerCamelCase class selectors use "selector-class-pattern": "^[a-z][a-zA-Z0-9]+$".

All these patterns disallow CSS identifiers that start with a digit, two hyphens, or a hyphen followed by a digit.

Enforce a prefix

You can ensure a prefix by using a positive lookbehind regex.

For example, to ensure all custom properties begin with my- use "custom-property-pattern": "(?<=my-)".