DOCX.js | Generate Microsoft Word DOCX files in pure client

I am creating an application using electron and react, and I will need to create a Word text document dynamically, I found a great package, DOCX, but I need to create some tables, and I can't set the size of the columns, I need help setting the size of the columns, follows an excerpt from the code, and documentation link https://docx.js.org/#/

EDIT: Solved (they changed their documentation and I wasn't doing it correctly).

I'm attempting to use the docx NPM package to create docx files in JavaScript. I've copied and pasted the documentation to "get started" and it's returning a "doc.addParagraph" is not a function for each of the lines in the function handler. According to the documentation, the docx package can be run on both the frontend and backend, so I've copied and pasted the documentation starter-kit into my react web app, but it's not working properly.

Here is the documentation: https://docx.js.org/#/

Here is the browser example of docx on the front-end: https://codepen.io/anon/pen/dqoVgQ

And here is my code in my react web app:

A have a project on angularjs and I need to create and download a document for print(no needed to save it on server). It can be .docx, but .pdf is preferable(so simple user won't able to change file). So, I know that there is a framework called PHPWord, but I don't like php at all. And there is another framework called docx.js(but it jquery required).

There is one more problem that I need to add values of variables to the docx template(which located on server, so admin can change it, of course he won't touch variables in this file) and then download fulfilled pdf document. It is not necessary to use docx template, nevertheless this variant is preferable.

Can you give me some recommendation in which way I need to look? Maybe you know some good framework based on native JS?