Two scenarios where semicolons would prevent an error

semicolons.js

try {
  let obj = {a: 0}
  let a = obj
  [0,1,2].forEach(item => console.log(item))
} catch (e) {
  console.log('First scenario', e) // throws TypeError: Cannot read property 'forEach' of undefined
}


try {
  let obj2 = {a:0}
  let c = obj2
  (function(){
    console.log('IIFE here')
  })()
} catch (e) {
  console.log('Second scenario', e) // throws TypeError: obj2 is not a function
}