Function default

default(node, childrenName?, keyName?): string[]
Find the key for all nodes

Example
```
import { findAllKeys } from "tree-handle-lib";
const node = [{
 key: "A",
 children: [{ key: "AA", children: [{ key: "AAA" }] }, { key: "AB" }],
}];
const _result = findAllKeys(node);
// ["A", "AA", "AB", "AAA"];
```
Parameters
- node: TNode
  
  the root node of the tree, can be a single node or an array of nodes
- childrenName: string = CHILDREN_NAME
  
  the child key name of the child node in the tree structure, default value is CHILDREN_NAME='children'
- keyName: string = KEY_NAME
  
  the key name of the node in the tree structure, default value is KEY_NAME='key'
Returns string[]
node | null
- Defined in src/lib/find/findAllKeys.ts:22

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