import { BaseDecoder } from '../base/base.decoder.js';
import type { TInvoice, TCreditNote, TDebitNote } from '../../interfaces/common.js';
import { UBLDocumentType } from './ubl.types.js';
import { xpath } from '../../plugins.js';
/**
 * Base decoder for UBL-based invoice formats
 */
export declare abstract class UBLBaseDecoder extends BaseDecoder {
    protected doc: Document;
    protected namespaces: Record<string, string>;
    protected select: xpath.XPathSelect;
    constructor(xml: string);
    /**
     * Decodes UBL XML into a TInvoice object
     * @returns Promise resolving to a TInvoice object
     */
    decode(): Promise<TInvoice>;
    /**
     * Gets the UBL document type
     * @returns UBL document type
     */
    protected getDocumentType(): UBLDocumentType;
    /**
     * Decodes a UBL credit note
     * @returns Promise resolving to a TCreditNote object
     */
    protected abstract decodeCreditNote(): Promise<TCreditNote>;
    /**
     * Decodes a UBL debit note (invoice)
     * @returns Promise resolving to a TDebitNote object
     */
    protected abstract decodeDebitNote(): Promise<TDebitNote>;
    /**
     * Gets a text value from an XPath expression
     * @param xpath XPath expression
     * @param context Optional context node
     * @returns Text value or empty string if not found
     */
    protected getText(xpathExpr: string, context?: Node): string;
    /**
     * Gets a number value from an XPath expression
     * @param xpath XPath expression
     * @param context Optional context node
     * @returns Number value or 0 if not found or not a number
     */
    protected getNumber(xpathExpr: string, context?: Node): number;
    /**
     * Gets a date value from an XPath expression
     * @param xpath XPath expression
     * @param context Optional context node
     * @returns Date timestamp or current time if not found or invalid
     */
    protected getDate(xpathExpr: string, context?: Node): number;
    /**
     * Checks if a node exists
     * @param xpath XPath expression
     * @param context Optional context node
     * @returns True if node exists
     */
    protected exists(xpathExpr: string, context?: Node): boolean;
}