* [transform-react-jsx] Add useSpread option to transform JSX
* Add validation for default option
* Add error when using useSpread and useBuiltIns at the same time
* Move useSpread to convertAttribute helper function
* Add useSpread option to presect-react
* Remove casting useSpread to boolean in preset-react option.
Co-Authored-By: Nicolò Ribaudo <nicolo.ribaudo@gmail.com>
Given the following
```js
a = <F new/>
```
We used to generate:
```js
a = React.createElement(F, {"new": true})
```
but now we generate
```js
a = React.createElement(F, {new: true})
```
If you need to quote these (ie for ES3 you can use
transform-property-literals)
* Add JSX Fragments to babel-types
* Support JSX fragments in the transform-react-jsx plugin
* Add tests JSX fragments
* Update helper-builder and transform plugin documentations for jsx fragment
* Add generator for jsx fragments
* Add test for jsx fragment generator
* Split jsx transform example into normal and fragment examples
* Remove unnecessary fields from ElementState in babel-helper-builder-react-jsx
* inline [skip ci]
* Added tests for ifThrowNamespace flag
* JSX transformator could work with XMLNamespaces (ifThrowNamespace flag)
* Use template literal instead
* Attempt to reword the message
* Added docs
* Reworded docs
* Reworded docs
* Fixed missing space in error message
* Use helper-builder-react-jsx inside plugin-transform-react-inline-elements.
This avoids duplicating the logic for converting jsx elements to plain JavaScript.
* Add a comment which explains the _jsx signature, [skip ci]
so it is a little bit easier to understand what all those .splice() calls do
Removed `@flow` annotation from files that don't actually pass Flow check at the moment. These will be added back file by file once the files are properly converted to use Flow.
Closes#3064
I'm extremely stupid and didn't commit as I go. To anyone reading this
I'm extremely sorry. A lot of these changes are very broad and I plan on
releasing Babel 6.0.0 today live on stage at Ember Camp London so I'm
afraid I couldn't wait. If you're ever in London I'll buy you a beer
(or assorted beverage!) to make up for it, also I'll kiss your feet and
give you a back massage, maybe.
