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author | Florian Dold <florian.dold@gmail.com> | 2018-09-20 02:56:13 +0200 |
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committer | Florian Dold <florian.dold@gmail.com> | 2018-09-20 02:56:13 +0200 |
commit | bbff7403fbf46f9ad92240ac213df8d30ef31b64 (patch) | |
tree | c58400ec5124da1c7d56b01aea83309f80a56c3b /node_modules/fbjs/lib/shallowEqual.js | |
parent | 003fb34971cf63466184351b4db5f7c67df4f444 (diff) |
update packages
Diffstat (limited to 'node_modules/fbjs/lib/shallowEqual.js')
-rw-r--r-- | node_modules/fbjs/lib/shallowEqual.js | 65 |
1 files changed, 0 insertions, 65 deletions
diff --git a/node_modules/fbjs/lib/shallowEqual.js b/node_modules/fbjs/lib/shallowEqual.js deleted file mode 100644 index 53ec43ea2..000000000 --- a/node_modules/fbjs/lib/shallowEqual.js +++ /dev/null @@ -1,65 +0,0 @@ -/** - * Copyright (c) 2013-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. - * - * @typechecks - * - */ - -/*eslint-disable no-self-compare */ - -'use strict'; - -var hasOwnProperty = Object.prototype.hasOwnProperty; - -/** - * inlined Object.is polyfill to avoid requiring consumers ship their own - * https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/is - */ -function is(x, y) { - // SameValue algorithm - if (x === y) { - // Steps 1-5, 7-10 - // Steps 6.b-6.e: +0 != -0 - // Added the nonzero y check to make Flow happy, but it is redundant - return x !== 0 || y !== 0 || 1 / x === 1 / y; - } else { - // Step 6.a: NaN == NaN - return x !== x && y !== y; - } -} - -/** - * Performs equality by iterating through keys on an object and returning false - * when any key has values which are not strictly equal between the arguments. - * Returns true when the values of all keys are strictly equal. - */ -function shallowEqual(objA, objB) { - if (is(objA, objB)) { - return true; - } - - if (typeof objA !== 'object' || objA === null || typeof objB !== 'object' || objB === null) { - return false; - } - - var keysA = Object.keys(objA); - var keysB = Object.keys(objB); - - if (keysA.length !== keysB.length) { - return false; - } - - // Test for A's keys different from B. - for (var i = 0; i < keysA.length; i++) { - if (!hasOwnProperty.call(objB, keysA[i]) || !is(objA[keysA[i]], objB[keysA[i]])) { - return false; - } - } - - return true; -} - -module.exports = shallowEqual;
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