promise.js

const getNumber = (target) => {
  const result = {}
  for (let i = 0, { length } = target; i < length; i += 1) {
    const character = target.charAt(i);
    if (result[character]) {
      result[character] += 1
    } else {
      result[character] = 1
    }
  }
  return result
}


export { getNumber }