Why did someone downvote this? It&#x27;s correct: <a href="https:&#x2F;&#x2F;babeljs.io&#x2F;repl&#x2F;#?experimental=true&amp;evaluate=true&amp;loose=false&amp;spec=false&amp;playground=false&amp;code=let%20foo%20%3D%201%3B%0Aalert(%7B%20foo%3A%20foo%20%7D%20%3D%3D%3D%20%7B%20foo%20%7D)" rel="nofollow">https:&#x2F;&#x2F;babeljs.io&#x2F;repl&#x2F;#?experimental=true&amp;evaluate=true&amp;lo...</a>