function treeMap(node, mapfn) {
  var results = [];
  nodeWalk(node, function(node) {
    results = results.concat(mapfn(node));
    return false;
  });
  return results;
}
function treeMap(node, mapfn) {
  var results = [];
  nodeWalk(node, function(node) {
    results = results.concat(mapfn(node));
    return false;
  });
  return results;
}
function treeMap ( node , mapfn ) { var results = [ ] ; nodeWalk ( node , function ( node ) { results = results . concat ( mapfn ( node ) ) ; return false ; } ) ; return results ; }
Applies `mapfn` to `node` and the tree below `node`, returning a flattened
list of results.
Applies mapfn to node and the tree below node returning a flattened list of results .