123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122
import toDate from '../toDate/index.ts'import isValid from '../isValid/index.js'import addLeadingZeros from '../_lib/addLeadingZeros/index.js'
/** * @name formatISO * @category Common Helpers * @summary Format the date according to the ISO 8601 standard (http://support.sas.com/documentation/cdl/en/lrdict/64316/HTML/default/viewer.htm#a003169814.htm). * * @description * Return the formatted date string in ISO 8601 format. Options may be passed to control the parts and notations of the date. * * @param {Date|Number} date - the original date * @param {Object} [options] - an object with options. * @param {'extended'|'basic'} [options.format='extended'] - if 'basic', hide delimiters between date and time values. * @param {'complete'|'date'|'time'} [options.representation='complete'] - format date, time with time zone, or both. * @returns {String} the formatted date string * @throws {TypeError} 1 argument required * @throws {RangeError} `date` must not be Invalid Date * @throws {RangeError} `options.format` must be 'extended' or 'basic' * @throws {RangeError} `options.represenation` must be 'date', 'time' or 'complete' * * @example * // Represent 18 September 2019 in ISO 8601 format (UTC): * const result = formatISO(new Date(2019, 8, 18, 19, 0, 52)) * //=> '2019-09-18T19:00:52Z' * * @example * // Represent 18 September 2019 in ISO 8601, short format (UTC): * const result = formatISO(new Date(2019, 8, 18, 19, 0, 52), { format: 'basic' }) * //=> '20190918T190052' * * @example * // Represent 18 September 2019 in ISO 8601 format, date only: * const result = formatISO(new Date(2019, 8, 18, 19, 0, 52), { representation: 'date' }) * //=> '2019-09-18' * * @example * // Represent 18 September 2019 in ISO 8601 format, time only (UTC): * const result = formatISO(new Date(2019, 8, 18, 19, 0, 52), { representation: 'time' }) * //=> '19:00:52Z' */export default function formatISO(dirtyDate, dirtyOptions) {  if (arguments.length < 1) {    throw new TypeError(      `1 argument required, but only ${arguments.length} present`    )  }
  const originalDate = toDate(dirtyDate)
  if (!isValid(originalDate)) {    throw new RangeError('Invalid time value')  }
  const options = dirtyOptions || {}  const format = options.format == null ? 'extended' : String(options.format)  const representation =    options.representation == null ? 'complete' : String(options.representation)
  if (format !== 'extended' && format !== 'basic') {    throw new RangeError("format must be 'extended' or 'basic'")  }
  if (    representation !== 'date' &&    representation !== 'time' &&    representation !== 'complete'  ) {    throw new RangeError("representation must be 'date', 'time', or 'complete'")  }
  let result = ''  let tzOffset = ''
  const dateDelimiter = format === 'extended' ? '-' : ''  const timeDelimiter = format === 'extended' ? ':' : ''
  // Representation is either 'date' or 'complete'  if (representation !== 'time') {    const day = addLeadingZeros(originalDate.getDate(), 2)    const month = addLeadingZeros(originalDate.getMonth() + 1, 2)    const year = addLeadingZeros(originalDate.getFullYear(), 4)
    // yyyyMMdd or yyyy-MM-dd.    result = `${year}${dateDelimiter}${month}${dateDelimiter}${day}`  }
  // Representation is either 'time' or 'complete'  if (representation !== 'date') {    // Add the timezone.    const offset = originalDate.getTimezoneOffset()
    if (offset !== 0) {      const absoluteOffset = Math.abs(offset)      const hourOffset = addLeadingZeros(Math.floor(absoluteOffset / 60), 2)      const minuteOffset = addLeadingZeros(absoluteOffset % 60, 2)      // If less than 0, the sign is +, because it is ahead of time.      const sign = offset < 0 ? '+' : '-'
      tzOffset = `${sign}${hourOffset}:${minuteOffset}`    } else {      tzOffset = 'Z'    }
    const hour = addLeadingZeros(originalDate.getHours(), 2)    const minute = addLeadingZeros(originalDate.getMinutes(), 2)    const second = addLeadingZeros(originalDate.getSeconds(), 2)
    // If there's also date, separate it with time with 'T'    const separator = result === '' ? '' : 'T'
    // Creates a time string consisting of hour, minute, and second, separated by delimiters, if defined.    const time = [hour, minute, second].join(timeDelimiter)
    // HHmmss or HH:mm:ss.    result = `${result}${separator}${time}${tzOffset}`  }
  return result}