54 lines
2.1 KiB
JavaScript
54 lines
2.1 KiB
JavaScript
|
import cloneObject from 'date-fns/_lib/cloneObject/index.js'
|
||
|
|
import toDate from '../toDate/index.js'
|
||
|
|
import tzPattern from '../_lib/tzPattern/index.js'
|
||
|
|
import tzParseTimezone from '../_lib/tzParseTimezone/index.js'
|
||
|
|
import newDateUTC from '../_lib/newDateUTC/index.js'
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @name zonedTimeToUtc
|
||
|
|
* @category Time Zone Helpers
|
||
|
|
* @summary Get the UTC date/time from a date representing local time in a given time zone
|
||
|
|
*
|
||
|
|
* @description
|
||
|
|
* Returns a date instance with the UTC time of the provided date of which the values
|
||
|
|
* represented the local time in the time zone specified. In other words, if the input
|
||
|
|
* date represented local time in time time zone, the timestamp of the output date will
|
||
|
|
* give the equivalent UTC of that local time regardless of the current system time zone.
|
||
|
|
*
|
||
|
|
* @param {Date|String|Number} date - the date with values representing the local time
|
||
|
|
* @param {String} timeZone - the time zone of this local time, can be an offset or IANA time zone
|
||
|
|
* @param {OptionsWithTZ} [options] - the object with options. See [Options]{@link https://date-fns.org/docs/Options}
|
||
|
|
* @param {0|1|2} [options.additionalDigits=2] - passed to `toDate`. See [toDate]{@link https://date-fns.org/docs/toDate}
|
||
|
|
* @returns {Date} the new date with the equivalent time in the time zone
|
||
|
|
* @throws {TypeError} 2 arguments required
|
||
|
|
* @throws {RangeError} `options.additionalDigits` must be 0, 1 or 2
|
||
|
|
*
|
||
|
|
* @example
|
||
|
|
* // In June 10am in Los Angeles is 5pm UTC
|
||
|
|
* const result = zonedTimeToUtc(new Date(2014, 5, 25, 10, 0, 0), 'America/Los_Angeles')
|
||
|
|
* //=> 2014-06-25T17:00:00.000Z
|
||
|
|
*/
|
||
|
|
export default function zonedTimeToUtc(date, timeZone, options) {
|
||
|
|
if (typeof date === 'string' && !date.match(tzPattern)) {
|
||
|
|
var extendedOptions = cloneObject(options)
|
||
|
|
extendedOptions.timeZone = timeZone
|
||
|
|
return toDate(date, extendedOptions)
|
||
|
|
}
|
||
|
|
|
||
|
|
var d = toDate(date, options)
|
||
|
|
|
||
|
|
var utc = newDateUTC(
|
||
|
|
d.getFullYear(),
|
||
|
|
d.getMonth(),
|
||
|
|
d.getDate(),
|
||
|
|
d.getHours(),
|
||
|
|
d.getMinutes(),
|
||
|
|
d.getSeconds(),
|
||
|
|
d.getMilliseconds()
|
||
|
|
).getTime()
|
||
|
|
|
||
|
|
var offsetMilliseconds = tzParseTimezone(timeZone, new Date(utc))
|
||
|
|
|
||
|
|
return new Date(utc + offsetMilliseconds)
|
||
|
|
}
|