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本页 14 段还没译成Tiếng Việt，下面显示的是英文原文。flattenBy
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function flattenBy<TNode>(arr, getChildren): TNode[];Defined in: utils.ts:264
Flattens a tree of nodes by recursively reading child nodes.
The original nodes are preserved in depth-first order.
Type Parameters
TNode
TNode
Parameters
arr
TNode[]
getChildren
(item) => TNode[]
Returns
TNode[]
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