41 lines
1011 B
JavaScript
41 lines
1011 B
JavaScript
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/**
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* Copyright (c) Facebook, Inc. and its affiliates.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*/
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'use strict';
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const hasOwn =
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Object.prototype.hasOwnProperty.call.bind(Object.prototype.hasOwnProperty);
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/**
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* Checks whether needle is a strict subset of haystack.
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*
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* @param {*} haystack Value to test.
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* @param {*} needle Test function or value to look for in `haystack`.
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* @return {bool}
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*/
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function matchNode(haystack, needle) {
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if (typeof needle === 'function') {
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return needle(haystack);
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}
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if (isNode(needle) && isNode(haystack)) {
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return Object.keys(needle).every(function(property) {
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return (
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hasOwn(haystack, property) &&
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matchNode(haystack[property], needle[property])
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);
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});
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}
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return haystack === needle;
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}
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function isNode(value) {
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return typeof value === 'object' && value;
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}
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module.exports = matchNode;
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