code: function padEnd (string, targetLength) {
    if (typeof string !== 'string' ||
      typeof targetLength !== 'number') {
      return string
    }
  
    /* istanbul ignore next */
    const fn = typeof String.prototype.padEnd === 'function'
      ? String.prototype.padEnd
      : polyfill
  
    return fn.call(string, targetLength)
  }
docs: String.prototype.padEnd
  
  @param {string} string string
  @param {number} targetLength padding length
  @returns {string} string