works!

demo/demo27.ts

@@ -0,0 +1,27 @@
+import { Document, Packer, Paragraph, ImportDocx } from "../build";
+import * as fs from "fs";
+
+let importDocx = new ImportDocx();
+const filePath = "./demo/dotx/template.dotx";
+fs.readFile(filePath, (err, data) => {
+    if (err) {
+        console.error(`failed to read file ${filePath}.`);
+    }
+    else {
+        importDocx.extract(data).then(templateDocument => {
+            let options = {};
+            options['templateDocument'] = templateDocument;
+            
+            const doc = new Document(options);
+            const paragraph = new Paragraph("Hello World");
+            doc.addParagraph(paragraph);
+
+            const packer = new Packer();
+            packer.toBuffer(doc).then((buffer) => {
+                fs.writeFileSync("MyDocument.docx", buffer);
+                console.log('done. open MyDocument.docx');
+            });
+        
+        });
+    }
+});