title: .includes() algorithm and speed?
body: <p>I'm interested to know what algorithm the .includes() method uses? Does it use a modularized hash like rabin karp? </p>
  
  <p>I'm somewhat hesitant to use .includes() without knowing more about its methodology and speed. The documentation I've found doesn't go into specifics when discussing it (e.g. <a href="https://developer.mozilla.org/en/docs/Web/JavaScript/Reference/Global_Objects/String/includes" rel="noreferrer">https://developer.mozilla.org/en/docs/Web/JavaScript/Reference/Global_Objects/String/includes</a>)</p>