1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465
import toDate from '../toDate/index.ts'import isValid from '../isValid/index.js'import addLeadingZeros from '../_lib/addLeadingZeros/index.js'
const days = ['Sun', 'Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat']const months = [  'Jan',  'Feb',  'Mar',  'Apr',  'May',  'Jun',  'Jul',  'Aug',  'Sep',  'Oct',  'Nov',  'Dec']
/** * @name formatRFC7231 * @category Common Helpers * @summary Format the date according to the RFC 7231 standard (https://tools.ietf.org/html/rfc7231#section-7.1.1.1). * * @description * Return the formatted date string in RFC 7231 format. * The result will always be in UTC timezone. * * @param {Date|Number} date - the original date * @returns {String} the formatted date string * @throws {TypeError} 1 argument required * @throws {RangeError} `date` must not be Invalid Date * * @example * // Represent 18 September 2019 in RFC 7231 format: * const result = formatRFC7231(new Date(2019, 8, 18, 19, 0, 52)) * //=> 'Wed, 18 Sep 2019 19:00:52 GMT' */export default function formatRFC7231(dirtyDate) {  if (arguments.length < 1) {    throw new TypeError(      `1 arguments required, but only ${arguments.length} present`    )  }
  const originalDate = toDate(dirtyDate)
  if (!isValid(originalDate)) {    throw new RangeError('Invalid time value')  }
  const dayName = days[originalDate.getUTCDay()]  const dayOfMonth = addLeadingZeros(originalDate.getUTCDate(), 2)  const monthName = months[originalDate.getUTCMonth()]  const year = originalDate.getUTCFullYear()
  const hour = addLeadingZeros(originalDate.getUTCHours(), 2)  const minute = addLeadingZeros(originalDate.getUTCMinutes(), 2)  const second = addLeadingZeros(originalDate.getUTCSeconds(), 2)
  // Result variables.  return `${dayName}, ${dayOfMonth} ${monthName} ${year} ${hour}:${minute}:${second} GMT`}