Summary:
Fixes https://github.com/facebook/react-native/issues/9216.
As nickzuber describes in #9216, conditional `Picker.Item` elements will lead to exceptions downstream when the `Picker` attempts to construct the collection of items.
[In the picker source](a2fb703bbb/Libraries/Components/Picker/PickerIOS.ios.js (L48-L53)) we can see that `child.props` is accessed when `child` has the potential to be an invalid `React` element.
```js
ReactChildren.forEach(props.children, function (child, index) {
if (child.props.value === props.selectedValue) {
selectedIndex = index;
}
items.push({value: child.props.value, label: child.props.label});
});
```
This change ensures the incoming element is valid
```diff
ReactChildren.forEach(props.children, function (child, index) {
+ if (!React.isValidElement(child)) {
+ return;
+ }
if (child.props.value === props.selectedValue) {
selectedIndex = index;
}
items.
Closes https://github.com/facebook/react-native/pull/9243
Differential Revision: D3847514
Pulled By: spicyj
fbshipit-source-id: f46fbd4b0f81de7a92e1ca3e60b5ed15a9cbbf78
Summary: This removes `node_modules/react` from the list of directories that are used for haste module resolutions. Modules required from React are now imported with `require('react/lib/…')`.
Reviewed By: astreet
Differential Revision: D3509863
fbshipit-source-id: 32cd34e2b8496f0a6676dbe6bb1eacc18124c01e
Summary: Creating a view instance just to get the default view size is quite expensive, and affects startup time for the bridge as it must be done on the main thread. I've removed these cases and simply hard-coded the sizes in the JS file. This will need to be updated if the view sizes ever change, but in practice that's very unlikely.
Reviewed By: javache
Differential Revision: D3218917
fb-gh-sync-id: 91a21dabb6046c5d4d5d0bec0845415cb3628ec3
fbshipit-source-id: 91a21dabb6046c5d4d5d0bec0845415cb3628ec3
Brian Vaughn
Jake Dawkins
Adam Dierkens
David Aurelio
Tim Yung
Atticus White
Ben Alpert
Nick Lockwood
