Doing a quick Google Search, I found these libraries: (I have not used, nor endorsed any of these)

• docx2html


• mammoth

docx2html basic functionality:

var docx2html=require('docx2html')

docx2html(fileInput.files[0],{container:document.getElementById('a')}).then(function(html){

    html.toString()

})

mammoth basic functionality:

var mammoth = require(mammoth);





mammoth.convertToHtml({path: path/to/document.docx})

    .then(function(result){

        var html = result.value; // The generated HTML 

        var messages = result.messages; // Any messages, such as warnings during conversion 

    })

    .done();

I hope this was, at least, useful