Solution for Rosetta Code: Generate lower case ASCII alphabet

What is your hint or solution suggestion?

Convert the two letters into their character codes. Create an array in the format [1,2,3,…,n], where n is the difference between the two character codes. Add the lower character code to all the values in the array to see the needed progression of character codes. Finally, convert back into string format using String.fromCharCode, and split the string using ''.

Solution 1
function lascii(cFrom, cTo) {
    var range = [...Array(cTo.charCodeAt(0) - cFrom.charCodeAt(0) + 1).keys()];
    var keymap = => i + cFrom.charCodeAt(0));
    var final = String.fromCharCode(...keymap).split('');
    return final

Challenge: Generate lower case ASCII alphabet

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