Summary:
I thought it would be useful to help clear out references to no longer used styles and also catch typos on style names to have flow error when we try to access a style that isn't defined.
Example:
```javascript
export default class AuthenticationScreen extends React.Component {
render() {
// This throws an error because `continer` is misspelled
return (
<View style={styles.continer} />
)
}
}
const styles = StyleSheet.create({
container: {
flex: 1,
},
}
```
```javascript
export default class AuthenticationScreen extends React.Component {
render() {
// This throws an error because no fancyContainer style is defined
return (
<View style={[styles.container, styles.fancyContainer]} />
)
}
}
const styles = StyleSheet.create({
container: {
flex: 1,
},
}
```
All credit goes to jeffmo in this tweet: https://twitter.com/lbljeffmo/status/755179096271888385
Also included in the PR is some cleanup on styles that
Closes https://github.com/facebook/react-native/pull/8876
Differential Revision: D3584983
Pulled By: yungsters
fbshipit-source-id: 0ee0e12ff3d976c137d932688e323c26690e0a52
a564af853f