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20 lines
621 B
20 lines
621 B
/**
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* Copyright (c) Meta Platforms, Inc. and 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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*/
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import * as React from 'react';
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var UNINITIALIZED = typeof Symbol === 'function' && typeof Symbol() === 'symbol' ? Symbol() : Object.freeze({});
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export default function useStable(getInitialValue) {
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var ref = React.useRef(UNINITIALIZED);
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if (ref.current === UNINITIALIZED) {
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ref.current = getInitialValue();
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} // $FlowFixMe (#64650789) Trouble refining types where `Symbol` is concerned.
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return ref.current;
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} |