{
  "version": 3,
  "sources": ["../../src/navigation/use-create-navigation-tree.tsx"],
  "sourcesContent": ["/**\n * WordPress dependencies\n */\nimport { useState } from '@wordpress/element';\n\n/**\n * Internal dependencies\n */\nimport { useNavigationTreeNodes } from './use-navigation-tree-nodes';\nexport const useCreateNavigationTree = () => {\n  const {\n    nodes: items,\n    getNode: getItem,\n    addNode: addItem,\n    removeNode: removeItem\n  } = useNavigationTreeNodes();\n  const {\n    nodes: menus,\n    getNode: getMenu,\n    addNode: addMenu,\n    removeNode: removeMenu\n  } = useNavigationTreeNodes();\n\n  /**\n   * Stores direct nested menus of menus\n   * This makes it easy to traverse menu tree\n   *\n   * Key is the menu prop of the menu\n   * Value is an array of menu keys\n   */\n  const [childMenu, setChildMenu] = useState({});\n  const getChildMenu = menu => childMenu[menu] || [];\n  const traverseMenu = (startMenu, callback) => {\n    const visited = [];\n    let queue = [startMenu];\n    let current;\n    while (queue.length > 0) {\n      // Type cast to string is safe because of the `length > 0` check above.\n      current = getMenu(queue.shift());\n      if (!current || visited.includes(current.menu)) {\n        continue;\n      }\n      visited.push(current.menu);\n      queue = [...queue, ...getChildMenu(current.menu)];\n      if (callback(current) === false) {\n        break;\n      }\n    }\n  };\n  const isMenuEmpty = menuToCheck => {\n    let isEmpty = true;\n    traverseMenu(menuToCheck, current => {\n      if (!current.isEmpty) {\n        isEmpty = false;\n        return false;\n      }\n      return undefined;\n    });\n    return isEmpty;\n  };\n  return {\n    items,\n    getItem,\n    addItem,\n    removeItem,\n    menus,\n    getMenu,\n    addMenu: (key, value) => {\n      setChildMenu(state => {\n        const newState = {\n          ...state\n        };\n        if (!value.parentMenu) {\n          return newState;\n        }\n        if (!newState[value.parentMenu]) {\n          newState[value.parentMenu] = [];\n        }\n        newState[value.parentMenu].push(key);\n        return newState;\n      });\n      addMenu(key, value);\n    },\n    removeMenu,\n    childMenu,\n    traverseMenu,\n    isMenuEmpty\n  };\n};"],
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