What happens when you access a variable in the Temporal Dead Zone (TDZ)?

Question

JavaScript Developer — Hard

What happens when you access a variable in the Temporal Dead Zone (TDZ)?

Accepted Answer

In the Temporal Dead Zone (TDZ), accessing a variable before its declaration with let/const will throw a ReferenceError. This is because let/const variables are hoisted to the top of their block scope but are not initialized until their actual declaration.