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- 'use strict';
- var callBind = require('call-bind');
- var I402 = typeof Intl === 'undefined' ? null : Intl;
- var DateTimeFormat = I402 && I402.DateTimeFormat;
- var resolvedOptions = DateTimeFormat && callBind(DateTimeFormat.prototype.resolvedOptions);
- // https://262.ecma-international.org/15.0/#sec-systemtimezoneidentifier
- module.exports = function SystemTimeZoneIdentifier() {
- if (DateTimeFormat && resolvedOptions) {
- return resolvedOptions(new DateTimeFormat()).timeZone; // steps 2 - 3
- }
- return 'UTC'; // step 1
- };
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