<pre><code class="lang-js">let a = {};

a?.k1 = 1;
</code></pre>
If you run the above example, you will meet this error in Chrome.
<blockquote>
Invalid left-hand side in assignment
</blockquote>
I think it should not be accepted because things should not be assigned to other than identifiers.

```js
let a = {};

a?.k1 = 1;
```

If you run the above example, you will meet this error in Chrome.

> Invalid left-hand side in assignment

I think it should not be accepted because things should not be assigned to other than identifiers.

examplist

examplist

Optional Chaining Cannot Be Used on the Left-Hand Side