I'm guessing you haven't seen the new data types?

- https://developer.mozilla.org/en-US/docs/Web/JavaScript/Refe... - https://developer.mozilla.org/en-US/docs/Web/JavaScript/Refe... - https://developer.mozilla.org/en-US/docs/Web/JavaScript/Refe... - https://developer.mozilla.org/en-US/docs/Web/JavaScript/Refe... - https://developer.mozilla.org/en-US/docs/Web/JavaScript/Refe... - https://developer.mozilla.org/en-US/docs/Web/JavaScript/Refe... - https://developer.mozilla.org/en-US/docs/Web/JavaScript/Refe... - https://developer.mozilla.org/en-US/docs/Web/JavaScript/Refe... - https://developer.mozilla.org/en-US/docs/Web/JavaScript/Refe... - https://developer.mozilla.org/en-US/docs/Web/JavaScript/Refe...