/**
 * @file HTML filtering rule converter
 */
import { type HtmlFilteringRule } from '../../nodes/index.js';
import { RuleConverterBase } from '../base-interfaces/rule-converter-base.js';
import { type NodeConversionResult } from '../base-interfaces/conversion-result.js';
export declare const ERROR_MESSAGES: {
    ABP_NOT_SUPPORTED: string;
    TAG_SHOULD_BE_FIRST_CHILD: string;
    EXPECTED_BUT_GOT_WITH_VALUE: string;
    INVALID_ATTRIBUTE_NAME: string;
    INVALID_ATTRIBUTE_VALUE: string;
    INVALID_FLAG: string;
    INVALID_OPERATOR_FOR_ATTR: string;
    VALUE_FOR_ATTR_SHOULD_BE_INT: string;
    INVALID_PSEUDO_CLASS: string;
    VALUE_FOR_PSEUDO_CLASS_SHOULD_BE_INT: string;
    REGEXP_NOT_SUPPORTED: string;
    ATTRIBUTE_SELECTOR_REQUIRES_VALUE: string;
    INVALID_ATTRIBUTE_SELECTOR_OPERATOR: string;
    VALUE_SHOULD_BE_SPECIFIED: string;
    VALUE_SHOULD_BE_POSITIVE: string;
    OPERATOR_SHOULD_BE_SPECIFIED: string;
    UNEXPECTED_TOKEN_WITH_VALUE: string;
    FLAGS_NOT_SUPPORTED: string;
};
/**
 * HTML filtering rule converter class
 *
 * @todo Implement `convertToUbo` (ABP currently doesn't support HTML filtering rules)
 */
export declare class HtmlRuleConverter extends RuleConverterBase {
    /**
     * Converts a HTML rule to AdGuard syntax, if possible. Also can be used to convert
     * AdGuard rules to AdGuard syntax to validate them.
     *
     * _Note:_ uBlock Origin supports multiple selectors within a single rule, but AdGuard doesn't,
     * so the following rule
     * ```
     * example.com##^div[attr1="value1"][attr2="value2"], script:has-text(value)
     * ```
     * will be converted to multiple AdGuard rules:
     * ```
     * example.com$$div[attr1="value1"][attr2="value2"][max-length="262144"]
     * example.com$$script[tag-content="value"][max-length="262144"]
     * ```
     *
     * @param rule Rule node to convert
     * @returns An object which follows the {@link NodeConversionResult} interface. Its `result` property contains
     * the array of converted rule nodes, and its `isConverted` flag indicates whether the original rule was converted.
     * If the rule was not converted, the result array will contain the original node with the same object reference
     * @throws If the rule is invalid or cannot be converted
     */
    static convertToAdg(rule: HtmlFilteringRule): NodeConversionResult<HtmlFilteringRule>;
    /**
     * Converts a HTML rule to uBlock Origin syntax, if possible.
     *
     * @note AdGuard rules are often more specific than uBlock Origin rules, so some information
     * may be lost in conversion. AdGuard's `[max-length]` and `[tag-content]` attributes will be converted to
     * uBlock's `:min-text-length()` and `:has-text()` pseudo-classes when possible.
     *
     * @param rule Rule node to convert
     * @returns An object which follows the {@link NodeConversionResult} interface. Its `result` property contains
     * the array of converted rule nodes, and its `isConverted` flag indicates whether the original rule was converted.
     * If the rule was not converted, the result array will contain the original node with the same object reference
     * @throws Error if the rule is invalid or cannot be converted
     */
    static convertToUbo(rule: HtmlFilteringRule): NodeConversionResult<HtmlFilteringRule>;
}