BREAKING CHANGE(XInvoice): Refactor XInvoice API for XML handling and PDF export by replacing deprecated methods (addXmlString and getParsedXmlData) with fromXml and loadXml, and by introducing a new ExportFormat type for type-safe export. Update tests accordingly.

test/test.validators.ts

@@ -51,15 +51,17 @@ tap.test('CII validator should validate valid XML at syntax level', async () =>
 tap.test('XInvoice class should validate invoices on load when requested', async () => {
   // Import XInvoice dynamically to prevent circular dependencies
   const { XInvoice } = await import('../ts/index.js');
-  const invoice = new XInvoice();
+  
+  // Create XInvoice with validation enabled
+  const options = { validateOnLoad: true };
   
   // Load a UBL invoice with validation
   const path = getInvoices.invoices.XMLRechnung.UBL['EN16931_Einfach.ubl.xml'];
   const invoiceBuffer = await getInvoices.getInvoice(path);
   const xml = invoiceBuffer.toString('utf8');
   
-  // Add XML with validation enabled
-  await invoice.addXmlString(xml, true);
+  // Create XInvoice from XML with validation enabled
+  const invoice = await XInvoice.fromXml(xml, options);
   
   // Check validation results
   expect(invoice.isValid()).toBeTrue();