code: function basics(node) {
    for (let i = 0; i < SIMPLIFICATION_FUNCTIONS.length; i++) {
      const nodeStatus = SIMPLIFICATION_FUNCTIONS[i](node);
      if (nodeStatus.hasChanged()) {
        return nodeStatus;
      }
      else {
        node = nodeStatus.newNode;
      }
    }
    return Node.Status.noChange(node);
  }
docs: Look for basic step(s) to perform on a node. Returns a Node.Status object.