utils/tree

References7#

• InterfaceFlatTreeNodeFlat-projected node carrying all ARIA-relevant metadata
• FunctioncollectDescendantValuesCollect all descendant values of a node (exclusive of the node itself), in DFS order
• FunctionfilterTreeReturn a new tree containing only nodes whose value matches predicate or have at least one matching descendant
• FunctionflattenTreeFlatten a tree in DFS order
• FunctionisNodeVisibleA flat node is visible iff every ancestor in its parentIds chain is present in expandedIds
• FunctionsortTreeReturn a new tree where each level's siblings are sorted independently by the by extractor
• FunctionwalkTreeDFS visitor