22 lines
499 B
JavaScript
22 lines
499 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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/**
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* This replicates lodash's once functionality for our purposes.
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*/
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module.exports = function(func) {
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let called = false;
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let result;
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return function(...args) {
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if (called) {
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return result;
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}
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called = true;
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return result = func.apply(this, args);
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};
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};
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