use react-doc-viewer for most of the text content files

[filkovsp]

link to github react-doc-viewer
and npm: react-doc-viewer

supported file types:

• bmp
• doc
• docx
• htm
• html
• jpg
• jpeg
• pdf
• png
• ppt
• pptx
• tiff
• txt
• xls
• xlsx

[filkovsp]

seems react-doc-viewer is slightly buggy, at least with the *.txt files.
might be worth to consider something different. sort of jquery DOMwindow
github links with improved some fixes:

• nivshah/jquery-DOMwindow
• elidickinson/jquery-domwindow

integration of React with JQuery: React : Integrating with Other Libraries

npm jquery: https://www.npmjs.com/package/jquery