I installed bootstrap and react-open-iconic but I cannot get it working.
In the code the following is used:
if (sortColumn.order === "asc") return <TextIcon className="oi sort-ascending" />; return <TextIcon className="oi sort-descending" />;
In the browser under developer tools - react I can see this:

And in the user interface this shows up:
The green frame was added to highlight was is shown for the text icon. It does not show the expected sort icon. There are no errors or warnings. Does anyone know how to use ?

Couldn't find many useful help for react-open-iconic; but you can use open-iconic
relevant js:
working stackblitz here