recursive, descendants

Flat Recursion.js

let nodeCurrent: AnchorNode = this;
let idxChild = 0;
for (; ;) {
    result.push(nodeCurrent);
    while (nodeCurrent !== this && idxChild >= nodeCurrent.children.length) {
        // Reached the end of the current node? Select first next sibling of ancestor
        idxChild = nodeCurrent.parent.children.indexOf(nodeCurrent) + 1;
        nodeCurrent = nodeCurrent.parent;
    }
    // Is idxChild is pointing beyond the children?
    if (idxChild >= nodeCurrent.children.length) {
        // Reached the end of the tree
        break;
    }
    // Step into the child
    nodeCurrent = nodeCurrent.children[idxChild];
    idxChild = 0;
}