Find a Corresponding Node of a Binary Tree in a Clone of That Tree.js

// Runtime: 203 ms (Top 86.6%) | Memory: 86.99 MB (Top 45.2%)

var getTargetCopy = function(original, cloned, target) {
    
    if( original == null ){
        
        // Base case aka stop condition
        // empty tree or empty node
        return null;
    }
    
    // General cases
    if( original == target ){
       
        // current original node is target, so is cloned
        return cloned;
    }
    
    // Either left subtree has target, or right subtree has target
    return getTargetCopy(original.left, cloned.left, target) || 
           getTargetCopy(original.right, cloned.right, target);
    
};