Function preOrderValues

Return all tree values in depth-first pre-order. Parents appear before their children. For example:

// ┬1
// ├┬2
// │└┬3
// │ └─4
// └─5
const myTree = branch(
  1, [
    branch(2, [
      branch(3, [
        leaf(4),
      ]),
    ]),
    leaf(5),
  ]
)
const myValues = preOrderValues(myTree) // [1, 2, 3, 4, 5]
Copy