Type Alias Visitor<State>

Visitor: (
    element: WalkElement,
    level: number,
    edge: EdgeTypeVariant,
    state: State,
) => [State, boolean]

Visitor function type.

Type Parameters

State
The type of state passed into each visit

Type Declaration

- (
      element: WalkElement,
      level: number,
      edge: EdgeTypeVariant,
      state: State,
  ): [State, boolean]
- Parameters
  - element: WalkElement
    The element being visited
  - level: number
    The depth level in the tree (0 = root)
  - edge: EdgeTypeVariant
    Information about the edge leading to this element
  - state: State
    The state value cloned from the parent visit
  Returns [State, boolean]
  Tuple of [newState, stopDescent] where:
  - newState: The state to pass into descendants of this element. Each descendant receives an independent clone of newState; sibling subtrees do not see each other's mutations.
  - stopDescent: If true, do not descend into children of this element.