Returns character frequencies of given string

string-character-map.js

const characterMap = (str) => {
  const charMap = {};
  str.split("").forEach((char) => {
    if (charMap[char]) {
      charMap[char]++;
    } else {
      charMap[char] = 1;
    }
  });

  return charMap;
};

console.log(characterMap("Hello"));

// output: { h: 1, e: 1, l: 2, o:1 }