JSFiddle - React, Tailwind, and code Playground
JavaScript
var str = 'Proin néc turpis eget dolor dictǔm lacínia. Nullam nǔnc magna, tincidunt eǔ porta in, faucibus sèd magna. Suspendisse laoreet ornare ullamcorper. Nulla in tortòr nibh. Pellentesque sèd est vitae odio vestibulum aliquet in nec leo.';
var newstr = str.replace(/(\b([a-z\u00C0-\u017E]{1,3})\b([^a-z\u00C0-\u017E]|$))/gi,'').split(/\s+/);
alert(newstr);