import isValid from '../isValid/index' ; import defaultLocale from '../locale/en-US/index' ; import subMilliseconds from '../subMilliseconds/index' ; import toDate from '../toDate/index' ; import formatters from '../_lib/format/formatters/index' ; import longFormatters from '../_lib/format/longFormatters/index' ; import getTimezoneOffsetInMilliseconds from '../_lib/getTimezoneOffsetInMilliseconds/index' ; import { isProtectedDayOfYearToken , isProtectedWeekYearToken , throwProtectedError , } from '../_lib/protectedTokens/index' ; import toInteger from '../_lib/toInteger/index' ; import requiredArgs from '../_lib/requiredArgs/index' ; import type { FirstWeekContainsDateOptions , LocaleOptions , WeekStartOptions , Day , FirstWeekContainsDate , } from '../types' ; const formattingTokensRegExp = /[yYQqMLwIdDecihHKkms]o|(\w)\1*|''|'(''|[^'])+('|$)|./g ; const longFormattingTokensRegExp = /P+p+|P+|p+|''|'(''|[^'])+('|$)|./g ; const escapedStringRegExp = /^'([^]*?)'?$/ ; const doubleQuoteRegExp = /''/g ; const unescapedLatinCharacterRegExp = /[a-zA-Z]/ ; name category summary description Return the formatted date string in the given format. The result may vary by locale.
 *
 * > ⚠️ Please note that the `format` tokens differ from Moment.js and other libraries.
 * > See: https://git.io/fxCyr
 *
 * The characters wrapped between two single quotes characters (') are escaped.
 * Two single quotes in a row, whether inside or outside a quoted sequence, represent a 'real' single quote.
 * (see the last example)
 *
 * Format of the string is based on Unicode Technical Standard #35:
 * https://www.unicode.org/reports/tr35/tr35-dates.html#Date_Field_Symbol_Table
 * with a few additions (see note 7 below the table).
 *
 * Accepted patterns:
 * | Unit                            | Pattern | Result examples                   | Notes |
 * |---------------------------------|---------|-----------------------------------|-------|
 * | Era                             | G..GGG  | AD, BC                            |       |
 * |                                 | GGGG    | Anno Domini, Before Christ        | 2     |
 * |                                 | GGGGG   | A, B                              |       |
 * | Calendar year                   | y       | 44, 1, 1900, 2017                 | 5     |
 * |                                 | yo      | 44th, 1st, 0th, 17th              | 5,7   |
 * |                                 | yy      | 44, 01, 00, 17                    | 5     |
 * |                                 | yyy     | 044, 001, 1900, 2017              | 5     |
 * |                                 | yyyy    | 0044, 0001, 1900, 2017            | 5     |
 * |                                 | yyyyy   | ...                               | 3,5   |
 * | Local week-numbering year       | Y       | 44, 1, 1900, 2017                 | 5     |
 * |                                 | Yo      | 44th, 1st, 1900th, 2017th         | 5,7   |
 * |                                 | YY      | 44, 01, 00, 17                    | 5,8   |
 * |                                 | YYY     | 044, 001, 1900, 2017              | 5     |
 * |                                 | YYYY    | 0044, 0001, 1900, 2017            | 5,8   |
 * |                                 | YYYYY   | ...                               | 3,5   |
 * | ISO week-numbering year         | R       | -43, 0, 1, 1900, 2017             | 5,7   |
 * |                                 | RR      | -43, 00, 01, 1900, 2017           | 5,7   |
 * |                                 | RRR     | -043, 000, 001, 1900, 2017        | 5,7   |
 * |                                 | RRRR    | -0043, 0000, 0001, 1900, 2017     | 5,7   |
 * |                                 | RRRRR   | ...                               | 3,5,7 |
 * | Extended year                   | u       | -43, 0, 1, 1900, 2017             | 5     |
 * |                                 | uu      | -43, 01, 1900, 2017               | 5     |
 * |                                 | uuu     | -043, 001, 1900, 2017             | 5     |
 * |                                 | uuuu    | -0043, 0001, 1900, 2017           | 5     |
 * |                                 | uuuuu   | ...                               | 3,5   |
 * | Quarter (formatting)            | Q       | 1, 2, 3, 4                        |       |
 * |                                 | Qo      | 1st, 2nd, 3rd, 4th                | 7     |
 * |                                 | QQ      | 01, 02, 03, 04                    |       |
 * |                                 | QQQ     | Q1, Q2, Q3, Q4                    |       |
 * |                                 | QQQQ    | 1st quarter, 2nd quarter, ...     | 2     |
 * |                                 | QQQQQ   | 1, 2, 3, 4                        | 4     |
 * | Quarter (stand-alone)           | q       | 1, 2, 3, 4                        |       |
 * |                                 | qo      | 1st, 2nd, 3rd, 4th                | 7     |
 * |                                 | qq      | 01, 02, 03, 04                    |       |
 * |                                 | qqq     | Q1, Q2, Q3, Q4                    |       |
 * |                                 | qqqq    | 1st quarter, 2nd quarter, ...     | 2     |
 * |                                 | qqqqq   | 1, 2, 3, 4                        | 4     |
 * | Month (formatting)              | M       | 1, 2, ..., 12                     |       |
 * |                                 | Mo      | 1st, 2nd, ..., 12th               | 7     |
 * |                                 | MM      | 01, 02, ..., 12                   |       |
 * |                                 | MMM     | Jan, Feb, ..., Dec                |       |
 * |                                 | MMMM    | January, February, ..., December  | 2     |
 * |                                 | MMMMM   | J, F, ..., D                      |       |
 * | Month (stand-alone)             | L       | 1, 2, ..., 12                     |       |
 * |                                 | Lo      | 1st, 2nd, ..., 12th               | 7     |
 * |                                 | LL      | 01, 02, ..., 12                   |       |
 * |                                 | LLL     | Jan, Feb, ..., Dec                |       |
 * |                                 | LLLL    | January, February, ..., December  | 2     |
 * |                                 | LLLLL   | J, F, ..., D                      |       |
 * | Local week of year              | w       | 1, 2, ..., 53                     |       |
 * |                                 | wo      | 1st, 2nd, ..., 53th               | 7     |
 * |                                 | ww      | 01, 02, ..., 53                   |       |
 * | ISO week of year                | I       | 1, 2, ..., 53                     | 7     |
 * |                                 | Io      | 1st, 2nd, ..., 53th               | 7     |
 * |                                 | II      | 01, 02, ..., 53                   | 7     |
 * | Day of month                    | d       | 1, 2, ..., 31                     |       |
 * |                                 | do      | 1st, 2nd, ..., 31st               | 7     |
 * |                                 | dd      | 01, 02, ..., 31                   |       |
 * | Day of year                     | D       | 1, 2, ..., 365, 366               | 9     |
 * |                                 | Do      | 1st, 2nd, ..., 365th, 366th       | 7     |
 * |                                 | DD      | 01, 02, ..., 365, 366             | 9     |
 * |                                 | DDD     | 001, 002, ..., 365, 366           |       |
 * |                                 | DDDD    | ...                               | 3     |
 * | Day of week (formatting)        | E..EEE  | Mon, Tue, Wed, ..., Sun           |       |
 * |                                 | EEEE    | Monday, Tuesday, ..., Sunday      | 2     |
 * |                                 | EEEEE   | M, T, W, T, F, S, S               |       |
 * |                                 | EEEEEE  | Mo, Tu, We, Th, Fr, Sa, Su        |       |
 * | ISO day of week (formatting)    | i       | 1, 2, 3, ..., 7                   | 7     |
 * |                                 | io      | 1st, 2nd, ..., 7th                | 7     |
 * |                                 | ii      | 01, 02, ..., 07                   | 7     |
 * |                                 | iii     | Mon, Tue, Wed, ..., Sun           | 7     |
 * |                                 | iiii    | Monday, Tuesday, ..., Sunday      | 2,7   |
 * |                                 | iiiii   | M, T, W, T, F, S, S               | 7     |
 * |                                 | iiiiii  | Mo, Tu, We, Th, Fr, Sa, Su        | 7     |
 * | Local day of week (formatting)  | e       | 2, 3, 4, ..., 1                   |       |
 * |                                 | eo      | 2nd, 3rd, ..., 1st                | 7     |
 * |                                 | ee      | 02, 03, ..., 01                   |       |
 * |                                 | eee     | Mon, Tue, Wed, ..., Sun           |       |
 * |                                 | eeee    | Monday, Tuesday, ..., Sunday      | 2     |
 * |                                 | eeeee   | M, T, W, T, F, S, S               |       |
 * |                                 | eeeeee  | Mo, Tu, We, Th, Fr, Sa, Su        |       |
 * | Local day of week (stand-alone) | c       | 2, 3, 4, ..., 1                   |       |
 * |                                 | co      | 2nd, 3rd, ..., 1st                | 7     |
 * |                                 | cc      | 02, 03, ..., 01                   |       |
 * |                                 | ccc     | Mon, Tue, Wed, ..., Sun           |       |
 * |                                 | cccc    | Monday, Tuesday, ..., Sunday      | 2     |
 * |                                 | ccccc   | M, T, W, T, F, S, S               |       |
 * |                                 | cccccc  | Mo, Tu, We, Th, Fr, Sa, Su        |       |
 * | AM, PM                          | a..aa   | AM, PM                            |       |
 * |                                 | aaa     | am, pm                            |       |
 * |                                 | aaaa    | a.m., p.m.                        | 2     |
 * |                                 | aaaaa   | a, p                              |       |
 * | AM, PM, noon, midnight          | b..bb   | AM, PM, noon, midnight            |       |
 * |                                 | bbb     | am, pm, noon, midnight            |       |
 * |                                 | bbbb    | a.m., p.m., noon, midnight        | 2     |
 * |                                 | bbbbb   | a, p, n, mi                       |       |
 * | Flexible day period             | B..BBB  | at night, in the morning, ...     |       |
 * |                                 | BBBB    | at night, in the morning, ...     | 2     |
 * |                                 | BBBBB   | at night, in the morning, ...     |       |
 * | Hour [1-12]                     | h       | 1, 2, ..., 11, 12                 |       |
 * |                                 | ho      | 1st, 2nd, ..., 11th, 12th         | 7     |
 * |                                 | hh      | 01, 02, ..., 11, 12               |       |
 * | Hour [0-23]                     | H       | 0, 1, 2, ..., 23                  |       |
 * |                                 | Ho      | 0th, 1st, 2nd, ..., 23rd          | 7     |
 * |                                 | HH      | 00, 01, 02, ..., 23               |       |
 * | Hour [0-11]                     | K       | 1, 2, ..., 11, 0                  |       |
 * |                                 | Ko      | 1st, 2nd, ..., 11th, 0th          | 7     |
 * |                                 | KK      | 01, 02, ..., 11, 00               |       |
 * | Hour [1-24]                     | k       | 24, 1, 2, ..., 23                 |       |
 * |                                 | ko      | 24th, 1st, 2nd, ..., 23rd         | 7     |
 * |                                 | kk      | 24, 01, 02, ..., 23               |       |
 * | Minute                          | m       | 0, 1, ..., 59                     |       |
 * |                                 | mo      | 0th, 1st, ..., 59th               | 7     |
 * |                                 | mm      | 00, 01, ..., 59                   |       |
 * | Second                          | s       | 0, 1, ..., 59                     |       |
 * |                                 | so      | 0th, 1st, ..., 59th               | 7     |
 * |                                 | ss      | 00, 01, ..., 59                   |       |
 * | Fraction of second              | S       | 0, 1, ..., 9                      |       |
 * |                                 | SS      | 00, 01, ..., 99                   |       |
 * |                                 | SSS     | 000, 001, ..., 999                |       |
 * |                                 | SSSS    | ...                               | 3     |
 * | Timezone (ISO-8601 w/ Z)        | X       | -08, +0530, Z                     |       |
 * |                                 | XX      | -0800, +0530, Z                   |       |
 * |                                 | XXX     | -08:00, +05:30, Z                 |       |
 * |                                 | XXXX    | -0800, +0530, Z, +123456          | 2     |
 * |                                 | XXXXX   | -08:00, +05:30, Z, +12:34:56      |       |
 * | Timezone (ISO-8601 w/o Z)       | x       | -08, +0530, +00                   |       |
 * |                                 | xx      | -0800, +0530, +0000               |       |
 * |                                 | xxx     | -08:00, +05:30, +00:00            | 2     |
 * |                                 | xxxx    | -0800, +0530, +0000, +123456      |       |
 * |                                 | xxxxx   | -08:00, +05:30, +00:00, +12:34:56 |       |
 * | Timezone (GMT)                  | O...OOO | GMT-8, GMT+5:30, GMT+0            |       |
 * |                                 | OOOO    | GMT-08:00, GMT+05:30, GMT+00:00   | 2     |
 * | Timezone (specific non-locat.)  | z...zzz | GMT-8, GMT+5:30, GMT+0            | 6     |
 * |                                 | zzzz    | GMT-08:00, GMT+05:30, GMT+00:00   | 2,6   |
 * | Seconds timestamp               | t       | 512969520                         | 7     |
 * |                                 | tt      | ...                               | 3,7   |
 * | Milliseconds timestamp          | T       | 512969520900                      | 7     |
 * |                                 | TT      | ...                               | 3,7   |
 * | Long localized date             | P       | 04/29/1453                        | 7     |
 * |                                 | PP      | Apr 29, 1453                      | 7     |
 * |                                 | PPP     | April 29th, 1453                  | 7     |
 * |                                 | PPPP    | Friday, April 29th, 1453          | 2,7   |
 * | Long localized time             | p       | 12:00 AM                          | 7     |
 * |                                 | pp      | 12:00:00 AM                       | 7     |
 * |                                 | ppp     | 12:00:00 AM GMT+2                 | 7     |
 * |                                 | pppp    | 12:00:00 AM GMT+02:00             | 2,7   |
 * | Combination of date and time    | Pp      | 04/29/1453, 12:00 AM              | 7     |
 * |                                 | PPpp    | Apr 29, 1453, 12:00:00 AM         | 7     |
 * |                                 | PPPppp  | April 29th, 1453 at ...           | 7     |
 * |                                 | PPPPpppp| Friday, April 29th, 1453 at ...   | 2,7   |
 * Notes:
 * 1. "Formatting" units (e.g. formatting quarter) in the default en-US locale
 *    are the same as "stand-alone" units, but are different in some languages.
 *    "Formatting" units are declined according to the rules of the language
 *    in the context of a date. "Stand-alone" units are always nominative singular:
 *
 *    `format(new Date(2017, 10, 6), 'do LLLL', {locale: cs}) //=> '6. listopad'`
 *
 *    `format(new Date(2017, 10, 6), 'do MMMM', {locale: cs}) //=> '6. listopadu'`
 *
 * 2. Any sequence of the identical letters is a pattern, unless it is escaped by
 *    the single quote characters (see below).
 *    If the sequence is longer than listed in table (e.g. `EEEEEEEEEEE`)
 *    the output will be the same as default pattern for this unit, usually
 *    the longest one (in case of ISO weekdays, `EEEE`). Default patterns for units
 *    are marked with "2" in the last column of the table.
 *
 *    `format(new Date(2017, 10, 6), 'MMM') //=> 'Nov'`
 *
 *    `format(new Date(2017, 10, 6), 'MMMM') //=> 'November'`
 *
 *    `format(new Date(2017, 10, 6), 'MMMMM') //=> 'N'`
 *
 *    `format(new Date(2017, 10, 6), 'MMMMMM') //=> 'November'`
 *
 *    `format(new Date(2017, 10, 6), 'MMMMMMM') //=> 'November'`
 *
 * 3. Some patterns could be unlimited length (such as `yyyyyyyy`).
 *    The output will be padded with zeros to match the length of the pattern.
 *
 *    `format(new Date(2017, 10, 6), 'yyyyyyyy') //=> '00002017'`
 *
 * 4. `QQQQQ` and `qqqqq` could be not strictly numerical in some locales.
 *    These tokens represent the shortest form of the quarter.
 *
 * 5. The main difference between `y` and `u` patterns are B.C. years:
 *
 *    | Year | `y` | `u` |
 *    |------|-----|-----|
 *    | AC 1 |   1 |   1 |
 *    | BC 1 |   1 |   0 |
 *    | BC 2 |   2 |  -1 |
 *
 *    Also `yy` always returns the last two digits of a year,
 *    while `uu` pads single digit years to 2 characters and returns other years unchanged:
 *
 *    | Year | `yy` | `uu` |
 *    |------|------|------|
 *    | 1    |   01 |   01 |
 *    | 14   |   14 |   14 |
 *    | 376  |   76 |  376 |
 *    | 1453 |   53 | 1453 |
 *
 *    The same difference is true for local and ISO week-numbering years (`Y` and `R`),
 *    except local week-numbering years are dependent on `options.weekStartsOn`
 *    and `options.firstWeekContainsDate` (compare [getISOWeekYear] https *    and [getWeekYear] https ).
 *
 * 6. Specific non-location timezones are currently unavailable in `date-fns`,
 *    so right now these tokens fall back to GMT timezones.
 *
 * 7. These patterns are not in the Unicode Technical Standard #35:
 *    - `i`: ISO day of week
 *    - `I`: ISO week of year
 *    - `R`: ISO week-numbering year
 *    - `t`: seconds timestamp
 *    - `T`: milliseconds timestamp
 *    - `o`: ordinal number modifier
 *    - `P`: long localized date
 *    - `p`: long localized time
 *
 * 8. `YY` and `YYYY` tokens represent week-numbering years but they are often confused with years.
 *    You should enable `options.useAdditionalWeekYearTokens` to use them. See: https://git.io/fxCyr
 *
 * 9. `D` and `DD` tokens represent days of the year but they are often confused with days of the month.
 *    You should enable `options.useAdditionalDayOfYearTokens` to use them. See: https://git.io/fxCyr
 *
 *  param { Date | Number } date param { String } format param options param { Locale } options . locale - the locale object. See [Locale] https param { 0 | 1 | 2 | 3 | 4 | 5 | 6 } options . weekStartsOn param { Number } options . firstWeekContainsDate param { Boolean } options . useAdditionalWeekYearTokens param { Boolean } options . useAdditionalDayOfYearTokens returns { String } throws throws throws throws throws throws throws throws throws throws throws example example example export default function format ( dirtyDate , dirtyFormatStr , dirtyOptions ? ) { requiredArgs ( 2 , arguments ) ; const formatStr = String ( dirtyFormatStr ) ; const options = dirtyOptions || { } ; const locale = options . locale || defaultLocale ; const localeFirstWeekContainsDate = locale . options && locale . options . firstWeekContainsDate ; const defaultFirstWeekContainsDate = localeFirstWeekContainsDate == null ? 1 : toInteger ( localeFirstWeekContainsDate ) ; const firstWeekContainsDate = options . firstWeekContainsDate == null ? defaultFirstWeekContainsDate : toInteger ( options . firstWeekContainsDate ) ; if ( ! ( firstWeekContainsDate >= 1 && firstWeekContainsDate <= 7 ) ) { throw new RangeError ( 'firstWeekContainsDate must be between 1 and 7 inclusively' ) ; } const localeWeekStartsOn = locale . options && locale . options . weekStartsOn ; const defaultWeekStartsOn = localeWeekStartsOn == null ? 0 : toInteger ( localeWeekStartsOn ) ; const weekStartsOn = options . weekStartsOn == null ? defaultWeekStartsOn : toInteger ( options . weekStartsOn ) ; if ( ! ( weekStartsOn >= 0 && weekStartsOn <= 6 ) ) { throw new RangeError ( 'weekStartsOn must be between 0 and 6 inclusively' ) ; } if ( ! locale . localize ) { throw new RangeError ( 'locale must contain localize property' ) ; } if ( ! locale . formatLong ) { throw new RangeError ( 'locale must contain formatLong property' ) ; } const originalDate = toDate ( dirtyDate ) ; if ( ! isValid ( originalDate ) ) { throw new RangeError ( 'Invalid time value' ) ; } const timezoneOffset = getTimezoneOffsetInMilliseconds ( originalDate ) ; const utcDate = subMilliseconds ( originalDate , timezoneOffset ) ; const formatterOptions = { firstWeekContainsDate : firstWeekContainsDate as FirstWeekContainsDate , weekStartsOn : weekStartsOn as Day , locale : locale , _originalDate : originalDate , } ; const result = formatStr . match ( longFormattingTokensRegExp ) ! . map ( function ( substring ) { const firstCharacter = substring [ 0 ] ; if ( firstCharacter === 'p' || firstCharacter === 'P' ) { const longFormatter = longFormatters [ firstCharacter ] ; return longFormatter ( substring , locale . formatLong ) ; } return substring ; } ) . join ( '' ) . match ( formattingTokensRegExp ) ! . map ( function ( substring ) { if ( substring === "''" ) { return "'" ; } const firstCharacter = substring [ 0 ] ; if ( firstCharacter === "'" ) { return cleanEscapedString ( substring ) ; } const formatter = formatters [ firstCharacter ] ; if ( formatter ) { if ( ! options . useAdditionalWeekYearTokens && isProtectedWeekYearToken ( substring ) ) { throwProtectedError ( substring , dirtyFormatStr , String ( dirtyDate ) ) ; } if ( ! options . useAdditionalDayOfYearTokens && isProtectedDayOfYearToken ( substring ) ) { throwProtectedError ( substring , dirtyFormatStr , String ( dirtyDate ) ) ; } return formatter ( utcDate , substring , locale . localize , formatterOptions ) ; } if ( firstCharacter . match ( unescapedLatinCharacterRegExp ) ) { throw new RangeError ( 'Format string contains an unescaped latin alphabet character `' + firstCharacter + '`' ) ; } return substring ; } ) . join ( '' ) ; return result ; } function cleanEscapedString ( input ) { const matched = input . match ( escapedStringRegExp ) ; if ( ! matched ) { return input ; } return matched [ 1 ] . replace ( doubleQuoteRegExp , "'" ) ; }