28 lines
639 B
JavaScript
28 lines
639 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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module.exports = function(arrays) {
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const result = new Set(arrays[0]);
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let resultSize = result.length;
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let i, value, valuesToCheck;
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for (i = 1; i < arrays.length; i++) {
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valuesToCheck = new Set(arrays[i]);
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for (value of result) {
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if (!valuesToCheck.has(value)) {
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result.delete(value);
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resultSize -= 1;
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}
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if (resultSize === 0) {
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return [];
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}
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}
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}
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return Array.from(result);
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};
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