var assert = require('assert');

​

function TreeNode(val) {

    this.val = val

    this.left = null

    this.right = null

}

​

function rightNodesBST(root) {

    return;

}

​

try {

    let root = new TreeNode(10)

    root.left = new TreeNode(5)

    root.right = new TreeNode(15)

    root.left.left = new TreeNode(3)

    root.left.right = new TreeNode(7)

    root.right.right = new TreeNode(18)

    assert.deepEqual(rightNodesBST(root), [10, 15, 18]);

​

    console.log('PASSED: ' + "rightNodesBST([10, 5, 15, 3, 7, null, 18])` should return `[10, 15, 18]`");

} catch (err) {

    console.log(err);

}

​

try {