> One question about @@create though... What would this do:
>
> function Foo () {}
>
> Foo.prototype[Symbol.create] = null;
>
> // ???
> // Maybe error out, like currently host objects without [[Construct]]:
> // TypeError: Foo is not a constructor.
> new Foo();
>
> - Jussi

```javascript
function Foo(){}
Object.defineProperty(Foo, Symbol.create, {value: null});
new Foo();
```
Results in `uncaught exception: TypeError: "Symbol(Symbol.create)" is 
not a function`.

Whereas this version creates a default object with [[Prototype]] set to 
`Bar.prototype`:
```javascript
function Bar(){}
Object.defineProperty(Bar, Symbol.create, {value: void 0});
new Bar();
```

The exact behaviour is specified in CreateFromConstructor(F) and 
Construct(F, argumentsList)
- 
https://people.mozilla.org/~jorendorff/es6-draft.html#sec-createfromconstructor
- 
https://people.mozilla.org/~jorendorff/es6-draft.html#sec-construct-f-argumentslist

> One question about @@create though... What would this do:
>
> ```js
> function Foo () {}
>
> Foo.prototype[Symbol.create] = null;
>
> // ???
> // Maybe error out, like currently host objects without [[Construct]]:
> // TypeError: Foo is not a constructor.
> new Foo();
> ```

```javascript
function Foo(){}
Object.defineProperty(Foo, Symbol.create, {value: null});
new Foo();
```
Results in `uncaught exception: TypeError: "Symbol(Symbol.create)" is 
not a function`.

Whereas this version creates a default object with [[Prototype]] set to 
`Bar.prototype`:
```javascript
function Bar(){}
Object.defineProperty(Bar, Symbol.create, {value: void 0});
new Bar();
```

The exact behaviour is specified in CreateFromConstructor(F) and 
Construct(F, argumentsList)
- 
https://people.mozilla.org/~jorendorff/es6-draft.html#sec-createfromconstructor
- 
https://people.mozilla.org/~jorendorff/es6-draft.html#sec