ngx-bootstrap/chronos/units/month.js

Native Angular Bootstrap Components

import { addFormatToken } from '../format/format';
import { isLeapYear } from './year';
import { mod } from '../utils';
import { getMonth } from '../utils/date-getters';
import { addRegexToken, match1to2, match2 } from '../parse/regex';
import { addParseToken } from '../parse/token';
import { MONTH } from './constants';
import { toInt } from '../utils/type-checks';
import { addUnitPriority } from './priorities';
import { addUnitAlias } from './aliases';
import { getParsingFlags } from '../create/parsing-flags';
// todo: this is duplicate, source in date-getters.ts
export function daysInMonth(year, month) {
    if (isNaN(year) || isNaN(month)) {
        return NaN;
    }
    var modMonth = mod(month, 12);
    var _year = year + (month - modMonth) / 12;
    return modMonth === 1
        ? isLeapYear(_year) ? 29 : 28
        : (31 - modMonth % 7 % 2);
}
// FORMATTING
addFormatToken('M', ['MM', 2, false], 'Mo', function (date, opts) {
    return (getMonth(date, opts.isUTC) + 1).toString(10);
});
addFormatToken('MMM', null, null, function (date, opts) {
    return opts.locale.monthsShort(date, opts.format, opts.isUTC);
});
addFormatToken('MMMM', null, null, function (date, opts) {
    return opts.locale.months(date, opts.format, opts.isUTC);
});
// ALIASES
addUnitAlias('month', 'M');
// PRIORITY
addUnitPriority('month', 8);
// PARSING
addRegexToken('M', match1to2);
addRegexToken('MM', match1to2, match2);
addRegexToken('MMM', function (isStrict, locale) {
    return locale.monthsShortRegex(isStrict);
});
addRegexToken('MMMM', function (isStrict, locale) {
    return locale.monthsRegex(isStrict);
});
addParseToken(['M', 'MM'], function (input, array, config) {
    array[MONTH] = toInt(input) - 1;
    return config;
});
addParseToken(['MMM', 'MMMM'], function (input, array, config, token) {
    var month = config._locale.monthsParse(input, token, config._strict);
    // if we didn't find a month name, mark the date as invalid.
    if (month != null) {
        array[MONTH] = month;
    }
    else {
        getParsingFlags(config).invalidMonth = !!input;
    }
    return config;
});
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