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Last change
on this file was 9af201e, checked in by MBK <marija.karapandzova@…>, 12 days ago |
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Fix frontend appearance
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-
Property mode
set to
100644
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File size:
1012 bytes
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| [9af201e] | 1 | 'use strict';
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| 2 |
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| 3 | var GetIntrinsic = require('get-intrinsic');
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| 4 |
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| 5 | var $DateUTC = GetIntrinsic('%Date.UTC%');
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| 6 |
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| 7 | var $isFinite = require('math-intrinsics/isFinite');
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| 8 |
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| 9 | var DateFromTime = require('./DateFromTime');
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| 10 | var Day = require('./Day');
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| 11 | var floor = require('./floor');
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| 12 | var modulo = require('./modulo');
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| 13 | var MonthFromTime = require('./MonthFromTime');
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| 14 | var ToIntegerOrInfinity = require('./ToIntegerOrInfinity');
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| 15 | var YearFromTime = require('./YearFromTime');
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| 16 |
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| 17 | // https://262.ecma-international.org/5.1/#sec-15.9.1.12
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| 18 |
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| 19 | module.exports = function MakeDay(year, month, date) {
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| 20 | if (!$isFinite(year) || !$isFinite(month) || !$isFinite(date)) {
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| 21 | return NaN;
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| 22 | }
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| 23 | var y = ToIntegerOrInfinity(year);
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| 24 | var m = ToIntegerOrInfinity(month);
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| 25 | var dt = ToIntegerOrInfinity(date);
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| 26 | var ym = y + floor(m / 12);
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| 27 | if (!$isFinite(ym)) {
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| 28 | return NaN;
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| 29 | }
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| 30 | var mn = modulo(m, 12);
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| 31 | var t = $DateUTC(ym, mn, 1);
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| 32 | if (YearFromTime(t) !== ym || MonthFromTime(t) !== mn || DateFromTime(t) !== 1) {
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| 33 | return NaN;
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| 34 | }
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| 35 | return Day(t) + dt - 1;
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| 36 | };
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