Function getLefts

getLefts<A>(zipper: Zipper.Zipper<A>): Tree<A>[]

Get the nodes to the left of the focus node.

Type Parameters

A
Underlying tree type.

Parameters

zipper: Zipper.Zipper<A>
Zipper to be queried.

Returns Tree<A>[]

Possibly empty list of trees.

Example

import {Zipper, from, of} from 'effect-tree'
import {pipe} from 'effect'

const tree = from(1, of(2), of(3))

const zipper = pipe(
  tree,
  Zipper.fromTree,
  Zipper.head
)

expect(Zipper.getLefts(zipper)).toEqual([])

const moved = Zipper.next(zipper)

expect(Zipper.getLefts(moved)).toEqual([of(2)])