18 lines
547 B
JavaScript
18 lines
547 B
JavaScript
import React from 'react';
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/**
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* Return cached Key Value map with DataNode.
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* Only re-calculate when `flattenOptions` changed.
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*/
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export default function useKeyValueMap(flattenOptions) {
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return React.useMemo(function () {
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var cacheKeyMap = new Map();
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var cacheValueMap = new Map(); // Cache options by key
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flattenOptions.forEach(function (dataNode) {
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cacheKeyMap.set(dataNode.key, dataNode);
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cacheValueMap.set(dataNode.data.value, dataNode);
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});
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return [cacheKeyMap, cacheValueMap];
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}, [flattenOptions]);
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} |