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map()

map<T, U>(node, fn): Composite<U>

Maps over a composite tree, transforming each node's data.

Type Parameters​

T: T​

The source data type

U: U​

The target data type

Parameters​

node: Composite<T>​

The root node to map

fn: (data) => U​

Function to transform node data

Returns: Composite<U>​

A new tree with transformed data

Since​

2.4.0

Example​

const doubled = map(tree, (data) => ({ ...data, size: data.size * 2 }));