utils

utils.js

export function oneOf(value, targetList) {
  return targetList.filter(target => value === target).length !== 0
}

export function getType(param) {
  return Object.prototype.toString.call(param).slice(8,-1).toLowerCase()
}

export function padStart(str, len, ch = ' ') {
  const times = len - `${str}`.length

  return times > 0 ? `${Array(times + 1).join(ch)}${str}` : str
}

export function rateOfIncrease(curr, prev) {
  return prev === 0 ? '' : ((curr - prev) / prev * 100).toFixed(2)
}

export function numberThreeDivision(number) {
  if (getType(number) !== 'number') {
    return;
  }

  return (number + '').split('').reverse().join('').replace(/(\d{3}\B)/g, '$1,').split('').reverse().join('');
}