This is current V8 behavior:
```
> let obj = {};
> obj[Object(Symbol())] = true;
TypeError: Cannot convert object to primitive value
> '' + Object(Symbol())
TypeError: Cannot convert a Symbol wrapper object to a primitive value
```
Both exceptions make a lot of sense, but I don’t see that in the spec. The way
I’d expect it to happen is via `Symbol.prototype[@@toPrimitive]` – it would
always throw. But that’s not the case.
https://people.mozilla.org/~jorendorff/es6-draft.html#sec-symbol.prototype-@@toprimitive
--
Dr. Axel Rauschmayer
[email protected]
rauschma.de
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