Marc Mintel
5397309103
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32 lines
1.1 KiB
Plaintext
32 lines
1.1 KiB
Plaintext
"use strict";
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exports.getTimezoneOffsetInMilliseconds = getTimezoneOffsetInMilliseconds;
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var _index = require("../toDate.cjs");
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/**
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* Google Chrome as of 67.0.3396.87 introduced timezones with offset that includes seconds.
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* They usually appear for dates that denote time before the timezones were introduced
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* (e.g. for 'Europe/Prague' timezone the offset is GMT+00:57:44 before 1 October 1891
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* and GMT+01:00:00 after that date)
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*
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* Date#getTimezoneOffset returns the offset in minutes and would return 57 for the example above,
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* which would lead to incorrect calculations.
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*
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* This function returns the timezone offset in milliseconds that takes seconds in account.
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*/
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function getTimezoneOffsetInMilliseconds(date) {
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const _date = (0, _index.toDate)(date);
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const utcDate = new Date(
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Date.UTC(
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_date.getFullYear(),
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_date.getMonth(),
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_date.getDate(),
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_date.getHours(),
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_date.getMinutes(),
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_date.getSeconds(),
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_date.getMilliseconds(),
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),
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);
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utcDate.setUTCFullYear(_date.getFullYear());
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return +date - +utcDate;
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}
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