Missing initialiser

const animals.map(firstLetter =>{

for( i=0, i < animals.length, i++)

let firstLetter = animals[i][0];

return firstLetter

})
when I console the code it shows a error. In the error message it says there is a missing initialiser. can someone help?

When we’ve already given our parameter this name why would we expunge it?

let firstLetter = animals[i][0];