Source File: code.js

const invincible = 94;
let changeme = 82;

console.log(`invincible=${invincible} but changeme=${changeme}`);

// this will work just fine
changeme = 100;

// uncomment this to see how you can't do it
// invincible = 100000;


console.log(`After change: invicible=${invincible} but changeme=${changeme}`);