Ignore accented letters in javascript

Question

I have a javascript as shown below in which Line A prints the following output at console.

const megaList = sortedMegaList.reduce((r, e) => {
    let group = e.title[0];  // Line B
    console.log(group);   // Line A
}, {});

o/p at console: (Line A)

B
C
D
E
É
G
H
I
L

Problem Statement:

I am wondering what changes I need to make at Line B so that it ignores accented letters.