import type { Rule } from 'postcss';
export declare function isProcessableRule(rule: Rule): boolean;
export declare const HTML_SELECTOR_REGEXP: RegExp;
export declare const HTML_WHERE_SELECTOR_REGEXP: RegExp;
export declare const ROOT_SELECTOR_REGEXP: RegExp;
export declare const ROOT_WHERE_SELECTOR_REGEXP: RegExp;
export declare const MAYBE_HTML_OR_ROOT_RULE_REGEXP: RegExp;