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

40 lines
739 B
JavaScript

/**
* 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.
*
* @format
* @flow
*/
'use strict';
type Inset = {
top: ?number,
left: ?number,
right: ?number,
bottom: ?number,
};
const dummyInsets = {
top: undefined,
left: undefined,
right: undefined,
bottom: undefined,
};
const insetsDiffer = function(one: ?Inset, two: ?Inset): boolean {
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;