text: const units = [ 'B', 'KB', 'MB', 'GB', 'TB', 'PB' ]
  
  export function humanStorageSize (bytes) {
    let u = 0
  
    while (parseInt(bytes, 10) >= 1024 && u < units.length - 1) {
      bytes /= 1024
      ++u
    }
  
    return `${ bytes.toFixed(1) }${ units[ u ] }`
  }
  
  export function capitalize (str) {
    return str.charAt(0).toUpperCase() + str.slice(1)
  }
  
  export function between (v, min, max) {
    return max <= min
      ? min
      : Math.min(max, Math.max(min, v))
  }
  
  export function normalizeToInterval (v, min, max) {
    if (max <= min) {
      return min
    }
  
    const size = (max - min + 1)
  
    let index = min + (v - min) % size
    if (index < min) {
      index = size + index
    }
  
    return index === 0 ? 0 : index // fix for (-a % a) => -0
  }
  
  export function pad (v, length = 2, char = '0') {
    if (v === void 0 || v === null) {
      return v
    }
  
    const val = '' + v
    return val.length >= length
      ? val
      : new Array(length - val.length + 1).join(char) + val
  }
  
  export default {
    humanStorageSize,
    capitalize,
    between,
    normalizeToInterval,
    pad
  }
  