import { CssTokenStream } from '../../parser/css/css-token-stream.js';
import { BaseConverter } from '../base-interfaces/base-converter.js';
import { type ConversionResult } from '../base-interfaces/conversion-result.js';
export declare const ERROR_MESSAGES: {
    INVALID_ATTRIBUTE_VALUE: string;
};
export declare const PseudoClasses: {
    readonly AbpContains: "-abp-contains";
    readonly AbpHas: "-abp-has";
    readonly Contains: "contains";
    readonly Has: "has";
    readonly HasText: "has-text";
    readonly MatchesCss: "matches-css";
    readonly MatchesCssAfter: "matches-css-after";
    readonly MatchesCssBefore: "matches-css-before";
    readonly Not: "not";
};
export type PseudoClasses = typeof PseudoClasses[keyof typeof PseudoClasses];
export declare const PseudoElements: {
    readonly After: "after";
    readonly Before: "before";
};
export type PseudoElements = typeof PseudoElements[keyof typeof PseudoElements];
/**
 * CSS selector converter.
 *
 * @todo Implement `convertToUbo` and `convertToAbp`.
 */
export declare class CssSelectorConverter extends BaseConverter {
    /**
     * Converts Extended CSS elements to AdGuard-compatible ones.
     *
     * @param selectorList Selector list to convert.
     *
     * @returns An object which follows the {@link ConversionResult} interface. Its `result` property contains
     * the converted node, and its `isConverted` flag indicates whether the original node was converted.
     * If the node was not converted, the result will contain the original node with the same object reference.
     *
     * @throws If the rule is invalid or incompatible.
     */
    static convertToAdg(selectorList: string | CssTokenStream): ConversionResult<string>;
}