react-native/Libraries/StyleSheet/setNormalizedColorAlpha.js
Rubén Norte d5e9e55fa3 Remove @providesModule from all modules
Summary:
This PR removes the need for having the `providesModule` tags in all the modules in the repository.

It configures Flow, Jest and Metro to get the module names from the filenames (`Libraries/Animated/src/nodes/AnimatedInterpolation.js` => `AnimatedInterpolation`)

* Checked the Flow configuration by running flow on the project root (no errors):

```
yarn flow
```

* Checked the Jest configuration by running the tests with a clean cache:

```
yarn jest --clearCache && yarn test
```

* Checked the Metro configuration by starting the server with a clean cache and requesting some bundles:

```
yarn run start --reset-cache
curl 'localhost:8081/IntegrationTests/AccessibilityManagerTest.bundle?platform=android'
curl 'localhost:8081/Libraries/Alert/Alert.bundle?platform=ios'
```

[INTERNAL] [FEATURE] [All] - Removed providesModule from all modules and configured tools.
Closes https://github.com/facebook/react-native/pull/18995

Reviewed By: mjesun

Differential Revision: D7729509

Pulled By: rubennorte

fbshipit-source-id: 892f760a05ce1fddb088ff0cd2e97e521fb8e825
2018-04-25 07:37:10 -07:00

29 lines
682 B
JavaScript

/**
* Copyright (c) 2015-present, Facebook, Inc.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*
* @flow
*/
/* eslint no-bitwise: 0 */
'use strict';
/**
* number should be a color processed by `normalizeColor`
* alpha should be number between 0 and 1
*/
function setNormalizedColorAlpha(input: number, alpha: number): number {
if (alpha < 0) {
alpha = 0;
} else if (alpha > 1) {
alpha = 1;
}
alpha = Math.round(alpha * 255);
// magic bitshift guarantees we return an unsigned int
return ((input & 0xffffff00) | alpha) >>> 0;
}
module.exports = setNormalizedColorAlpha;