/**
 * @file CSS injection rule converter
 */
import { type CssInjectionRule } from '../../nodes/index.js';
import { RuleConverterBase } from '../base-interfaces/rule-converter-base.js';
import { type NodeConversionResult } from '../base-interfaces/conversion-result.js';
/**
 * CSS injection rule converter class
 *
 * @todo Implement `convertToUbo` and `convertToAbp`
 */
export declare class CssInjectionRuleConverter extends RuleConverterBase {
    /**
     * Converts a CSS injection rule to AdGuard format, if 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 If the rule is invalid or cannot be converted
     */
    static convertToAdg(rule: CssInjectionRule): NodeConversionResult<CssInjectionRule>;
}