Recursive object

Input
```js
value = { ['key']: value }
```

Output
```js
value = {};
value['key'] = value
```

It creates a recursive object.

No files or tests are named. Reproduce the input through Buble's object-literal transformation, then locate the transformation entry point and existing regression tests; done means the recursive object remains valid and preserves the self-reference rather than producing an invalid or incorrect rewrite.

Written by the indexing model from the issue text.