typescript obejct replace propertyies

                                    ts// 1. Select the div element using the id property
const app = document.getElementById("app");

// 2. Create a new <p></p> element programmatically
const p = document.createElement("p");

// 3. Add the text content
p.textContent = "Hello, World!";

// 4. Append the p element to the div element
app?.appendChild(p);

                                    const recievedKeys = Object.keys(receivedObject) as Array<keyof IEvent>
    for (const key of recievedKeys) {
      this.event = {
        ...this.event,
        [key]: receivedObject[key]
      }
    }