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frontend/node_modules/rc-cascader/es/hooks/useEntities.js

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+import _objectSpread from "@babel/runtime/helpers/esm/objectSpread2";
+import * as React from 'react';
+import { convertDataToEntities } from "rc-tree/es/utils/treeUtil";
+import { VALUE_SPLIT } from "../utils/commonUtil";
+/** Lazy parse options data into conduct-able info to avoid perf issue in single mode */
+export default (function (options, fieldNames) {
+  var cacheRef = React.useRef({
+    options: [],
+    info: {
+      keyEntities: {},
+      pathKeyEntities: {}
+    }
+  });
+  var getEntities = React.useCallback(function () {
+    if (cacheRef.current.options !== options) {
+      cacheRef.current.options = options;
+      cacheRef.current.info = convertDataToEntities(options, {
+        fieldNames: fieldNames,
+        initWrapper: function initWrapper(wrapper) {
+          return _objectSpread(_objectSpread({}, wrapper), {}, {
+            pathKeyEntities: {}
+          });
+        },
+        processEntity: function processEntity(entity, wrapper) {
+          var pathKey = entity.nodes.map(function (node) {
+            return node[fieldNames.value];
+          }).join(VALUE_SPLIT);
+          wrapper.pathKeyEntities[pathKey] = entity;
+
+          // Overwrite origin key.
+          // this is very hack but we need let conduct logic work with connect path
+          entity.key = pathKey;
+        }
+      });
+    }
+    return cacheRef.current.info.pathKeyEntities;
+  }, [fieldNames, options]);
+  return getEntities;
+});