PdfPageImportOptions API in JavaScript PDF API control

// Load an existing PDF document
let document: PdfDocument = new PdfDocument(data);
// Options to customize the support of import PDF pages.
let options: PdfPageImportOptions = new PdfPageImportOptions();
// Sets the target page index to import
options.targetIndex = 1;
// Sets the rotation angle of the page to import
options.rotation = PdfRotationAngle.angle180;
// Sets the boolean value indicating whether the optimize resources while import pages or not
options.optimizeResources = true;
// Copy the first page and add it as second page with page rotation
document.importPage(0, options);
// Save the document
document.save('output.pdf');
// Destroy the document
document.destroy();