Function bfs

bfs<T = TreeNode, K extends string = "children">(
    tree: Tree<T, K>,
    callback: (node: Tree<T, K>) => boolean | void,
    childrenKey?: K,
): void
广度优先遍历树结构 / Breadth-first search traversal of tree structure
Type Parameters
- T = TreeNode
  树节点数据类型 / Tree node data type
- K extends string = "children"
  子节点属性键类型 / Child node property key type
Parameters
- tree: Tree<T, K>
  树形结构的根节点 / Root node of the tree structure
- callback: (node: Tree<T, K>) => boolean | void
  遍历每个节点时执行的回调函数，返回false可中断遍历 / Callback function executed for each node, return false to break traversal
- childrenKey: K = ...
  子节点属性名，默认为'children' / Child node property name, defaults to 'children'
Returns void
Example
```
// 示例用法 / Example usage
const tree = {
  value: 1,
  children: [
    { value: 2, children: [] },
    { value: 3, children: [] }
  ]
};

bfs(tree, (node) => {
  console.log(node.value);
  // 返回false可中断遍历 / Return false to break traversal
  if (node.value === 2) return false;
});
```
- Defined in src/bfs.ts:29