processColor index.js

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  /**
 * Copyright (c) Nicolas Gallagher.
 * Copyright (c) Facebook, Inc. and its affiliates.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 *
 * @flow
 */
 
import normalizeColor from 'normalize-css-color';
 
const processColor = (color?: string | number): ?number => {
  Iif (color === undefined || color === null) {
    return color;
  }
 
  // convert number and hex
  let int32Color = normalizeColor(color);
  Iif (int32Color === undefined || int32Color === null) {
    return undefined;
  }
 
  int32Color = ((int32Color << 24) | (int32Color >>> 8)) >>> 0;
 
  return int32Color;
};
 
export default processColor;