react-native/Libraries/Utilities/differ/insetsDiffer.js

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/**
* Copyright (c) 2015-present, Facebook, Inc.
* All rights reserved.
*
* This source code is licensed under the BSD-style license found in the
* LICENSE file in the root directory of this source tree. An additional grant
* of patent rights can be found in the PATENTS file in the same directory.
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*
* @providesModule insetsDiffer
* @flow
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*/
'use strict';
type Inset = {
top: ?number;
left: ?number;
right: ?number;
bottom: ?number;
}
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var dummyInsets = {
top: undefined,
left: undefined,
right: undefined,
bottom: undefined,
};
var insetsDiffer = function(
one: ?Inset,
two: ?Inset
): bool {
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one = one || dummyInsets;
two = two || dummyInsets;
return one !== two && (
one.top !== two.top ||
one.left !== two.left ||
one.right !== two.right ||
one.bottom !== two.bottom
);
};
module.exports = insetsDiffer;