Why when i write this code :

const myFirstVar = 1
const mySecondVar = 2

(myFirstVar === mySecondVar) ? "yes" : "no"

I get this error :

Uncaught ReferenceError: Cannot access 'mySecondVar' before initialization

While when i write this code :

const myFirstVar = 1
const mySecondVar = 2

myFirstVar === mySecondVar ? "yes" : "no"

It works ?