{"ast":null,"code":"import _toConsumableArray from \"@babel/runtime/helpers/esm/toConsumableArray\";\nimport { fillFieldNames } from \"rc-tree/es/utils/treeUtil\";\nconst RECORD_NONE = 0;\nconst RECORD_START = 1;\nconst RECORD_END = 2;\nfunction traverseNodesKey(treeData, callback, fieldNames) {\n  const {\n    key: fieldKey,\n    children: fieldChildren\n  } = fieldNames;\n  function processNode(dataNode) {\n    const key = dataNode[fieldKey];\n    const children = dataNode[fieldChildren];\n    if (callback(key, dataNode) !== false) {\n      traverseNodesKey(children || [], callback, fieldNames);\n    }\n  }\n  treeData.forEach(processNode);\n}\n/** 计算选中范围，只考虑expanded情况以优化性能 */\nexport function calcRangeKeys(_ref) {\n  let {\n    treeData,\n    expandedKeys,\n    startKey,\n    endKey,\n    fieldNames\n  } = _ref;\n  const keys = [];\n  let record = RECORD_NONE;\n  if (startKey && startKey === endKey) {\n    return [startKey];\n  }\n  if (!startKey || !endKey) {\n    return [];\n  }\n  function matchKey(key) {\n    return key === startKey || key === endKey;\n  }\n  traverseNodesKey(treeData, key => {\n    if (record === RECORD_END) {\n      return false;\n    }\n    if (matchKey(key)) {\n      // Match test\n      keys.push(key);\n      if (record === RECORD_NONE) {\n        record = RECORD_START;\n      } else if (record === RECORD_START) {\n        record = RECORD_END;\n        return false;\n      }\n    } else if (record === RECORD_START) {\n      // Append selection\n      keys.push(key);\n    }\n    return expandedKeys.includes(key);\n  }, fillFieldNames(fieldNames));\n  return keys;\n}\nexport function convertDirectoryKeysToNodes(treeData, keys, fieldNames) {\n  const restKeys = _toConsumableArray(keys);\n  const nodes = [];\n  traverseNodesKey(treeData, (key, node) => {\n    const index = restKeys.indexOf(key);\n    if (index !== -1) {\n      nodes.push(node);\n      restKeys.splice(index, 1);\n    }\n    return !!restKeys.length;\n  }, 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