docx-js/demo/86-generate-template.ts

// Generate a template document
// Import from 'docx' rather than '../build' if you install from npm
import * as fs from "fs";
import { Document, Packer, Paragraph, TextRun } from "../build";

const doc = new Document({
    sections: [
        {
            children: [
                new Paragraph({
                    children: [new TextRun("{{template}}")],
                }),
            ],
        },
    ],
});

Packer.toBuffer(doc).then((buffer) => {
    fs.writeFileSync("My Document.docx", buffer);
});