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Thank you for the kind words, Samuel. Appreciate the suggestion. 😊

What I feel is :

Here it'll implicitly check to be sure user.firstName is not null or undefined before attempting to access user.firstName.lastName. If user.firstName is null or undefined, the expression automatically short-circuits, returning undefined.

Sure, I'm aware of the logic Insha Ramin

But talking about the user object structure.

This means you're saying the user structure is 👇

const user = {

firstName: {
lastName: "Insha"
}

}

What I'm saying 👇

const user = {

names: {
firstName: "Insha",
lastName: "Ramin"
}

}

So we can check if the name object exist before accessing the firstName or lastName.

I mean your lastName cannot be inside your firstName 😬.

I hope this explains the structure I'm talking about.