import { makeGetSet } from '../moment/get-set';
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import { addFormatToken } from '../format/format';
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import { addUnitAlias } from './aliases';
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import { addUnitPriority } from './priorities';
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import {
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addRegexToken,
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match1to2,
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match1to4,
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match1to6,
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match2,
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match4,
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match6,
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matchSigned,
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} from '../parse/regex';
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import { addParseToken } from '../parse/token';
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import { isLeapYear } from '../utils/is-leap-year';
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import { hooks } from '../utils/hooks';
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import { YEAR } from './constants';
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import toInt from '../utils/to-int';
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import zeroFill from '../utils/zero-fill';
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// FORMATTING
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addFormatToken('Y', 0, 0, function () {
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var y = this.year();
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return y <= 9999 ? zeroFill(y, 4) : '+' + y;
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});
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addFormatToken(0, ['YY', 2], 0, function () {
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return this.year() % 100;
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});
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addFormatToken(0, ['YYYY', 4], 0, 'year');
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addFormatToken(0, ['YYYYY', 5], 0, 'year');
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addFormatToken(0, ['YYYYYY', 6, true], 0, 'year');
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// ALIASES
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addUnitAlias('year', 'y');
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// PRIORITIES
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addUnitPriority('year', 1);
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// PARSING
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addRegexToken('Y', matchSigned);
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addRegexToken('YY', match1to2, match2);
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addRegexToken('YYYY', match1to4, match4);
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addRegexToken('YYYYY', match1to6, match6);
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addRegexToken('YYYYYY', match1to6, match6);
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addParseToken(['YYYYY', 'YYYYYY'], YEAR);
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addParseToken('YYYY', function (input, array) {
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array[YEAR] =
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input.length === 2 ? hooks.parseTwoDigitYear(input) : toInt(input);
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});
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addParseToken('YY', function (input, array) {
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array[YEAR] = hooks.parseTwoDigitYear(input);
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});
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addParseToken('Y', function (input, array) {
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array[YEAR] = parseInt(input, 10);
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});
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// HELPERS
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export function daysInYear(year) {
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return isLeapYear(year) ? 366 : 365;
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}
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export { isLeapYear };
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// HOOKS
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hooks.parseTwoDigitYear = function (input) {
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return toInt(input) + (toInt(input) > 68 ? 1900 : 2000);
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};
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// MOMENTS
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export var getSetYear = makeGetSet('FullYear', true);
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export function getIsLeapYear() {
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return isLeapYear(this.year());
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}
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