Given an array of words, return the words that can be typed using letters of only one row on a keyboard.

index.js

function getOneKeyRowWords(listOfWords) {
 const row1 = ['q','w','e','r','t','y','u','i','o','p'],
 row2 = ['a','s','d','f','g','h','j','k','l'],
 row3 = ['z','x','c','v','b','n','m'];
 return listOfWords.filter((word) => {
     const uniquesChars = new Set(word.toLowerCase());
     return (
         row1.length === [...new Set([...row1, ...uniquesChars])].length ||
         row2.length === [...new Set([...row2, ...uniquesChars])].length ||
         row3.length === [...new Set([...row3, ...uniquesChars])].length
    ) ? true : false;
 });
}