span class='number'>6</span> };

<span class='ident'>a</span>.<span class='ident'>x</span> <span class='op'>=</span> <span class='number'>10</span>;

<span class='kw'>let</span> <span class='ident'>b</span> <span class='op'>=</span> <span class='ident'>Point</span> { <span class='ident'>x</span>: <span class='number'>5</span>, <span class='ident'>y</span>: <span class='number'>6</span>};

<span class='ident'>b</span>.<span class='ident'>x</span> <span class='op'>=</span> <span class='number'>10</span>; <spa