import { ExtCssRuleData, RawCssRuleData } from './types';
import { ExtCssDocument } from '../selector';
/**
 * Parses CSS rule into rules data object:
 * 1. Find the last `{` mark in the rule
 *    which supposed to be a divider between selector and style block.
 * 2. Validates found string part before the `{` via selector parser; and if:
 *  - parsing failed – get the previous `{` in the rule,
 *    and validates a new rule part again [2];
 *  - parsing successful — saves a found rule part as selector and parses the style block.
 *
 * @param rawCssRule Single CSS rule to parse.
 * @param extCssDoc ExtCssDocument which is used for selector ast caching.
 *
 * @returns Array of rules data which contains:
 *   - selector as string;
 *   - ast to query elements by;
 *   - map of styles to apply.
 * @throws An error on invalid css rule syntax:
 *   - unsupported CSS features – comments and at-rules
 *   - invalid selector or style block.
 */
export declare const parseRule: (rawCssRule: string, extCssDoc: ExtCssDocument) => RawCssRuleData;
/**
 * Parses array of CSS rules into array of rules data objects.
 * Invalid rules are skipped and not applied,
 * and the errors are logged.
 *
 * @param rawCssRules Array of rules to parse.
 * @param extCssDoc Needed for selector ast caching.
 *
 * @returns Array of parsed valid rules data.
 */
export declare const parseRules: (rawCssRules: string[], extCssDoc: ExtCssDocument) => ExtCssRuleData[];