JSFiddle - React, Tailwind, and code Playground

HTML

<div>bla</div><div>aaa</div>
<div>aa bla </div>

CSS

span {background:red;}

JavaScript

Slick.definePseudo('contains-text',function(paramater){
   return this.innerHTML.test(new RegExp(paramater.escapeRegExp()));
});

console.log($$('div:contains-text(bla)'))