Additionally, symbols would have provided a neat way to implement private (and privately shared) properties, if they hadn&#x27;t decided on adding the `getOwnPropertySymbols` function[1]. Bummer.<p>[1]: <a href="https:&#x2F;&#x2F;developer.mozilla.org&#x2F;en-US&#x2F;docs&#x2F;Web&#x2F;JavaScript&#x2F;Reference&#x2F;Global_Objects&#x2F;Object&#x2F;getOwnPropertySymbols" rel="nofollow">https:&#x2F;&#x2F;developer.mozilla.org&#x2F;en-US&#x2F;docs&#x2F;Web&#x2F;JavaScript&#x2F;Refe...</a>