[Webkit-unassigned] [Bug 151026] Destructuring Assignment: Properties are valid AssignmentElements

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=151026

--- Comment #2 from Caitlin Potter <caitpotter88 at gmail.com> ---
Added a first-stab at a fix.

This only supports the case of ObjectAssignmentPattern properties with identifier property names, so no integer/string/computed properties supported yet. Also, ArrayAssignmentPatterns aren't handled.

A test case:

```js
var foo = {};
({ a: foo.a } = { a: true });
assert(foo.a === true);
```

I'm happy to add tests and clean it up (without cleanup, there will be a pile of duplicate code), but I'd like to make sure the codegen and new AST entry make sense first.

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