const fs = require('fs')
const Docxtemplater = require('docxtemplater')

const content = fs.readFileSync(__dirname + "/input.docx", "binary")

const PizZip = require('pizzip')
const zip = new PizZip(content)

const doc = new Docxtemplater(zip)

doc.render({
  Letters: [null, null] // Two
})

const buf = doc.getZip().generate({type: 'nodebuffer'})

const template = __dirname + '/output.docx'
console.log(`writing ${template}`)
fs.writeFileSync(template, buf)