Summary:
In order to cleanup the callsites that are not using Animated's native driver, we are going to make useNativeDriver a required option so people have to think about whether they want the native driver or not.
I made this change by changing [Animated.js](https://fburl.com/ritcebri) to have this animation config type:
```
export type AnimationConfig = {
isInteraction?: boolean,
useNativeDriver: true,
onComplete?: ?EndCallback,
iterations?: number,
};
```
This causes Flow to error anywhere where useNativeDriver isn't set or where it is set to false.
I then used these Flow errors to codemod the callsites.
I got the location of the Flow errors by running:
```
flow status --strip-root --json --message-width=0 | jq '.errors | [.[].extra | .[].message | .[].loc | objects | {source: .source, start: .start, end: .end}]'
```
And then ran this codemod:
```
const json = JSON.parse('JSON RESULT FROM FLOW');
const fileLookup = new Map();
json.forEach(item => {
if (!fileLookup.has(item.source)) {
fileLookup.set(item.source, []);
}
fileLookup.get(item.source).push(item);
});
export default function transformer(file, api) {
const j = api.jscodeshift;
const filePath = file.path;
if (!fileLookup.has(filePath)) {
return;
}
const locationInfo = fileLookup.get(filePath);
return j(file.source)
.find(j.ObjectExpression)
.forEach(path => {
if (
path.node.properties.some(
property =>
property != null &&
property.key != null &&
property.key.name === 'useNativeDriver',
)
) {
return;
}
const hasErrorOnLine = locationInfo.some(
singleLocationInfo =>
singleLocationInfo.start.line === path.node.loc.start.line &&
Math.abs(
singleLocationInfo.start.column - path.node.loc.start.column,
) <= 2,
);
if (!hasErrorOnLine) {
return;
}
path.node.properties.push(
j.property(
'init',
j.identifier('useNativeDriver'),
j.booleanLiteral(false),
),
);
})
.toSource();
}
export const parser = 'flow';
```
```
yarn jscodeshift --parser=flow --transform addUseNativeDriver.js RKJSModules react-native-github
```
Followed up with
```
hg status -n --change . | xargs js1 prettier
```
Reviewed By: mdvacca
Differential Revision: D16611291
fbshipit-source-id: 1157587416ec7603d1a59e1fad6a821f1f57b952
Summary:
Changes RNTester, first attempt in the direction of improving the RNTester overall. Related ticket: #24647
Changed the `js` directory of the RNTester to have the following structure:
```
- js
- assets
- components
- examples
- types
- utils
```
* **assets**
_Any images, gifs, and media content_
* **components**
_All shared components_
* **examples**
_Example View/Components to be rendered by the App_
* **types**
_Shared flow types_
* **utils**
_Shared utilities_
## Changelog
[General] [Changed] - Update folder structure of RNTester's JS directory.
Pull Request resolved: https://github.com/facebook/react-native/pull/25013
Differential Revision: D15515773
Pulled By: cpojer
fbshipit-source-id: 0e4b6386127f338dca0ffe8c237073be53a9e221
Logan Daniels
Eli White
AndreiCalazans