There’s a cycle in the delegation calls chain

When there is a cycle in the delegation calls chain, it means that an object is trying to delegate a method or property to another object, but that object is also trying to delegate to the first object. This creates a loop or cycle in the delegation chain.

To explain this in more detail, let’s consider an example:

    
      const obj1 = {
        name: "Object 1",
        delegate: null,
        printName: function() {
          console.log(this.name);
          if (this.delegate) {
            this.delegate.printName();
          }
        }
      };
      
      const obj2 = {
        name: "Object 2",
        delegate: null,
        printName: function() {
          console.log(this.name);
          if (this.delegate) {
            this.delegate.printName();
          }
        }
      };
      
      obj1.delegate = obj2;
      obj2.delegate = obj1;
      
      obj1.printName();
    
  

In this example, we have two objects, obj1 and obj2, both having a property ‘delegate’ and a method ‘printName’. The ‘printName’ method prints the name of the object and then calls the ‘printName’ method of its delegate, if it exists.

We set up a cycle by assigning obj1 as the delegate of obj2 and obj2 as the delegate of obj1.

Now, when we call the ‘printName’ method of obj1, it will print “Object 1” and then delegate the call to obj2. Obj2 will print “Object 2” and then delegate the call back to obj1. This cycle continues indefinitely, resulting in an infinite loop.

This cycle in the delegation calls chain can cause problems in the program, leading to unexpected behavior and potential crashes or stack overflow errors.