@angular/common
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Angular - commonly needed directives and services
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JavaScript
/**
* @license
* Copyright Google LLC All Rights Reserved.
*
* Use of this source code is governed by an MIT-style license that can be
* found in the LICENSE file at https://angular.io/license
*/
import { Inject, InjectionToken, LOCALE_ID, Optional, Pipe } from '@angular/core';
import { formatDate } from '../i18n/format_date';
import { DEFAULT_DATE_FORMAT } from './date_pipe_config';
import { invalidPipeArgumentError } from './invalid_pipe_argument_error';
import * as i0 from "@angular/core";
/**
* Optionally-provided default timezone to use for all instances of `DatePipe` (such as `'+0430'`).
* If the value isn't provided, the `DatePipe` will use the end-user's local system timezone.
*
* @deprecated use DATE_PIPE_DEFAULT_OPTIONS token to configure DatePipe
*/
export const DATE_PIPE_DEFAULT_TIMEZONE = new InjectionToken(ngDevMode ? 'DATE_PIPE_DEFAULT_TIMEZONE' : '');
/**
* DI token that allows to provide default configuration for the `DatePipe` instances in an
* application. The value is an object which can include the following fields:
* - `dateFormat`: configures the default date format. If not provided, the `DatePipe`
* will use the 'mediumDate' as a value.
* - `timezone`: configures the default timezone. If not provided, the `DatePipe` will
* use the end-user's local system timezone.
*
* @see {@link DatePipeConfig}
*
* @usageNotes
*
* Various date pipe default values can be overwritten by providing this token with
* the value that has this interface.
*
* For example:
*
* Override the default date format by providing a value using the token:
* ```typescript
* providers: [
* {provide: DATE_PIPE_DEFAULT_OPTIONS, useValue: {dateFormat: 'shortDate'}}
* ]
* ```
*
* Override the default timezone by providing a value using the token:
* ```typescript
* providers: [
* {provide: DATE_PIPE_DEFAULT_OPTIONS, useValue: {timezone: '-1200'}}
* ]
* ```
*/
export const DATE_PIPE_DEFAULT_OPTIONS = new InjectionToken(ngDevMode ? 'DATE_PIPE_DEFAULT_OPTIONS' : '');
/**
* @ngModule CommonModule
* @description
*
* Formats a date value according to locale rules.
*
* `DatePipe` is executed only when it detects a pure change to the input value.
* A pure change is either a change to a primitive input value
* (such as `String`, `Number`, `Boolean`, or `Symbol`),
* or a changed object reference (such as `Date`, `Array`, `Function`, or `Object`).
*
* Note that mutating a `Date` object does not cause the pipe to be rendered again.
* To ensure that the pipe is executed, you must create a new `Date` object.
*
* Only the `en-US` locale data comes with Angular. To localize dates
* in another language, you must import the corresponding locale data.
* See the [I18n guide](guide/i18n/format-data-locale) for more information.
*
* The time zone of the formatted value can be specified either by passing it in as the second
* parameter of the pipe, or by setting the default through the `DATE_PIPE_DEFAULT_OPTIONS`
* injection token. The value that is passed in as the second parameter takes precedence over
* the one defined using the injection token.
*
* @see {@link formatDate}
*
*
* @usageNotes
*
* The result of this pipe is not reevaluated when the input is mutated. To avoid the need to
* reformat the date on every change-detection cycle, treat the date as an immutable object
* and change the reference when the pipe needs to run again.
*
* ### Pre-defined format options
*
* | Option | Equivalent to | Examples (given in `en-US` locale) |
* |---------------|-------------------------------------|-------------------------------------------------|
* | `'short'` | `'M/d/yy, h:mm a'` | `6/15/15, 9:03 AM` |
* | `'medium'` | `'MMM d, y, h:mm:ss a'` | `Jun 15, 2015, 9:03:01 AM` |
* | `'long'` | `'MMMM d, y, h:mm:ss a z'` | `June 15, 2015 at 9:03:01 AM GMT+1` |
* | `'full'` | `'EEEE, MMMM d, y, h:mm:ss a zzzz'` | `Monday, June 15, 2015 at 9:03:01 AM GMT+01:00` |
* | `'shortDate'` | `'M/d/yy'` | `6/15/15` |
* | `'mediumDate'`| `'MMM d, y'` | `Jun 15, 2015` |
* | `'longDate'` | `'MMMM d, y'` | `June 15, 2015` |
* | `'fullDate'` | `'EEEE, MMMM d, y'` | `Monday, June 15, 2015` |
* | `'shortTime'` | `'h:mm a'` | `9:03 AM` |
* | `'mediumTime'`| `'h:mm:ss a'` | `9:03:01 AM` |
* | `'longTime'` | `'h:mm:ss a z'` | `9:03:01 AM GMT+1` |
* | `'fullTime'` | `'h:mm:ss a zzzz'` | `9:03:01 AM GMT+01:00` |
*
* ### Custom format options
*
* You can construct a format string using symbols to specify the components
* of a date-time value, as described in the following table.
* Format details depend on the locale.
* Fields marked with (*) are only available in the extra data set for the given locale.
*
* | Field type | Format | Description | Example Value |
* |-------------------------|-------------|---------------------------------------------------------------|------------------------------------------------------------|
* | Era | G, GG & GGG | Abbreviated | AD |
* | | GGGG | Wide | Anno Domini |
* | | GGGGG | Narrow | A |
* | Year | y | Numeric: minimum digits | 2, 20, 201, 2017, 20173 |
* | | yy | Numeric: 2 digits + zero padded | 02, 20, 01, 17, 73 |
* | | yyy | Numeric: 3 digits + zero padded | 002, 020, 201, 2017, 20173 |
* | | yyyy | Numeric: 4 digits or more + zero padded | 0002, 0020, 0201, 2017, 20173 |
* | ISO Week-numbering year | Y | Numeric: minimum digits | 2, 20, 201, 2017, 20173 |
* | | YY | Numeric: 2 digits + zero padded | 02, 20, 01, 17, 73 |
* | | YYY | Numeric: 3 digits + zero padded | 002, 020, 201, 2017, 20173 |
* | | YYYY | Numeric: 4 digits or more + zero padded | 0002, 0020, 0201, 2017, 20173 |
* | Month | M | Numeric: 1 digit | 9, 12 |
* | | MM | Numeric: 2 digits + zero padded | 09, 12 |
* | | MMM | Abbreviated | Sep |
* | | MMMM | Wide | September |
* | | MMMMM | Narrow | S |
* | Month standalone | L | Numeric: 1 digit | 9, 12 |
* | | LL | Numeric: 2 digits + zero padded | 09, 12 |
* | | LLL | Abbreviated | Sep |
* | | LLLL | Wide | September |
* | | LLLLL | Narrow | S |
* | ISO Week of year | w | Numeric: minimum digits | 1... 53 |
* | | ww | Numeric: 2 digits + zero padded | 01... 53 |
* | Week of month | W | Numeric: 1 digit | 1... 5 |
* | Day of month | d | Numeric: minimum digits | 1 |
* | | dd | Numeric: 2 digits + zero padded | 01 |
* | Week day | E, EE & EEE | Abbreviated | Tue |
* | | EEEE | Wide | Tuesday |
* | | EEEEE | Narrow | T |
* | | EEEEEE | Short | Tu |
* | Week day standalone | c, cc | Numeric: 1 digit | 2 |
* | | ccc | Abbreviated | Tue |
* | | cccc | Wide | Tuesday |
* | | ccccc | Narrow | T |
* | | cccccc | Short | Tu |
* | Period | a, aa & aaa | Abbreviated | am/pm or AM/PM |
* | | aaaa | Wide (fallback to `a` when missing) | ante meridiem/post meridiem |
* | | aaaaa | Narrow | a/p |
* | Period* | B, BB & BBB | Abbreviated | mid. |
* | | BBBB | Wide | am, pm, midnight, noon, morning, afternoon, evening, night |
* | | BBBBB | Narrow | md |
* | Period standalone* | b, bb & bbb | Abbreviated | mid. |
* | | bbbb | Wide | am, pm, midnight, noon, morning, afternoon, evening, night |
* | | bbbbb | Narrow | md |
* | Hour 1-12 | h | Numeric: minimum digits | 1, 12 |
* | | hh | Numeric: 2 digits + zero padded | 01, 12 |
* | Hour 0-23 | H | Numeric: minimum digits | 0, 23 |
* | | HH | Numeric: 2 digits + zero padded | 00, 23 |
* | Minute | m | Numeric: minimum digits | 8, 59 |
* | | mm | Numeric: 2 digits + zero padded | 08, 59 |
* | Second | s | Numeric: minimum digits | 0... 59 |
* | | ss | Numeric: 2 digits + zero padded | 00... 59 |
* | Fractional seconds | S | Numeric: 1 digit | 0... 9 |
* | | SS | Numeric: 2 digits + zero padded | 00... 99 |
* | | SSS | Numeric: 3 digits + zero padded (= milliseconds) | 000... 999 |
* | Zone | z, zz & zzz | Short specific non location format (fallback to O) | GMT-8 |
* | | zzzz | Long specific non location format (fallback to OOOO) | GMT-08:00 |
* | | Z, ZZ & ZZZ | ISO8601 basic format | -0800 |
* | | ZZZZ | Long localized GMT format | GMT-8:00 |
* | | ZZZZZ | ISO8601 extended format + Z indicator for offset 0 (= XXXXX) | -08:00 |
* | | O, OO & OOO | Short localized GMT format | GMT-8 |
* | | OOOO | Long localized GMT format | GMT-08:00 |
*
*
* ### Format examples
*
* These examples transform a date into various formats,
* assuming that `dateObj` is a JavaScript `Date` object for
* year: 2015, month: 6, day: 15, hour: 21, minute: 43, second: 11,
* given in the local time for the `en-US` locale.
*
* ```
* {{ dateObj | date }} // output is 'Jun 15, 2015'
* {{ dateObj | date:'medium' }} // output is 'Jun 15, 2015, 9:43:11 PM'
* {{ dateObj | date:'shortTime' }} // output is '9:43 PM'
* {{ dateObj | date:'mm:ss' }} // output is '43:11'
* {{ dateObj | date:"MMM dd, yyyy 'at' hh:mm a" }} // output is 'Jun 15, 2015 at 09:43 PM'
* ```
*
* ### Usage example
*
* The following component uses a date pipe to display the current date in different formats.
*
* ```
* @Component({
* selector: 'date-pipe',
* template: `<div>
* <p>Today is {{today | date}}</p>
* <p>Or if you prefer, {{today | date:'fullDate'}}</p>
* <p>The time is {{today | date:'h:mm a z'}}</p>
* </div>`
* })
* // Get the current date and time as a date-time value.
* export class DatePipeComponent {
* today: number = Date.now();
* }
* ```
*
* @publicApi
*/
export class DatePipe {
constructor(locale, defaultTimezone, defaultOptions) {
this.locale = locale;
this.defaultTimezone = defaultTimezone;
this.defaultOptions = defaultOptions;
}
transform(value, format, timezone, locale) {
if (value == null || value === '' || value !== value)
return null;
try {
const _format = format ?? this.defaultOptions?.dateFormat ?? DEFAULT_DATE_FORMAT;
const _timezone = timezone ?? this.defaultOptions?.timezone ?? this.defaultTimezone ?? undefined;
return formatDate(value, _format, locale || this.locale, _timezone);
}
catch (error) {
throw invalidPipeArgumentError(DatePipe, error.message);
}
}
static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "18.0.0", ngImport: i0, type: DatePipe, deps: [{ token: LOCALE_ID }, { token: DATE_PIPE_DEFAULT_TIMEZONE, optional: true }, { token: DATE_PIPE_DEFAULT_OPTIONS, optional: true }], target: i0.ɵɵFactoryTarget.Pipe }); }
static { this.ɵpipe = i0.ɵɵngDeclarePipe({ minVersion: "14.0.0", version: "18.0.0", ngImport: i0, type: DatePipe, isStandalone: true, name: "date" }); }
}
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "18.0.0", ngImport: i0, type: DatePipe, decorators: [{
type: Pipe,
args: [{
name: 'date',
standalone: true,
}]
}], ctorParameters: () => [{ type: undefined, decorators: [{
type: Inject,
args: [LOCALE_ID]
}] }, { type: undefined, decorators: [{
type: Inject,
args: [DATE_PIPE_DEFAULT_TIMEZONE]
}, {
type: Optional
}] }, { type: undefined, decorators: [{
type: Inject,
args: [DATE_PIPE_DEFAULT_OPTIONS]
}, {
type: Optional
}] }] });
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'DATE_PIPE_DEFAULT_TIMEZONE' : '',\n);\n\n/**\n * DI token that allows to provide default configuration for the `DatePipe` instances in an\n * application. The value is an object which can include the following fields:\n * - `dateFormat`: configures the default date format. If not provided, the `DatePipe`\n * will use the 'mediumDate' as a value.\n * - `timezone`: configures the default timezone. If not provided, the `DatePipe` will\n * use the end-user's local system timezone.\n *\n * @see {@link DatePipeConfig}\n *\n * @usageNotes\n *\n * Various date pipe default values can be overwritten by providing this token with\n * the value that has this interface.\n *\n * For example:\n *\n * Override the default date format by providing a value using the token:\n * ```typescript\n * providers: [\n *   {provide: DATE_PIPE_DEFAULT_OPTIONS, useValue: {dateFormat: 'shortDate'}}\n * ]\n * ```\n *\n * Override the default timezone by providing a value using the token:\n * ```typescript\n * providers: [\n *   {provide: DATE_PIPE_DEFAULT_OPTIONS, useValue: {timezone: '-1200'}}\n * ]\n * ```\n */\nexport const DATE_PIPE_DEFAULT_OPTIONS = new InjectionToken<DatePipeConfig>(\n  ngDevMode ? 'DATE_PIPE_DEFAULT_OPTIONS' : '',\n);\n\n/**\n * @ngModule CommonModule\n * @description\n *\n * Formats a date value according to locale rules.\n *\n * `DatePipe` is executed only when it detects a pure change to the input value.\n * A pure change is either a change to a primitive input value\n * (such as `String`, `Number`, `Boolean`, or `Symbol`),\n * or a changed object reference (such as `Date`, `Array`, `Function`, or `Object`).\n *\n * Note that mutating a `Date` object does not cause the pipe to be rendered again.\n * To ensure that the pipe is executed, you must create a new `Date` object.\n *\n * Only the `en-US` locale data comes with Angular. To localize dates\n * in another language, you must import the corresponding locale data.\n * See the [I18n guide](guide/i18n/format-data-locale) for more information.\n *\n * The time zone of the formatted value can be specified either by passing it in as the second\n * parameter of the pipe, or by setting the default through the `DATE_PIPE_DEFAULT_OPTIONS`\n * injection token. The value that is passed in as the second parameter takes precedence over\n * the one defined using the injection token.\n *\n * @see {@link formatDate}\n *\n *\n * @usageNotes\n *\n * The result of this pipe is not reevaluated when the input is mutated. To avoid the need to\n * reformat the date on every change-detection cycle, treat the date as an immutable object\n * and change the reference when the pipe needs to run again.\n *\n * ### Pre-defined format options\n *\n * | Option        | Equivalent to                       | Examples (given in `en-US` locale)              |\n * |---------------|-------------------------------------|-------------------------------------------------|\n * | `'short'`     | `'M/d/yy, h:mm a'`                  | `6/15/15, 9:03 AM`                              |\n * | `'medium'`    | `'MMM d, y, h:mm:ss a'`             | `Jun 15, 2015, 9:03:01 AM`                      |\n * | `'long'`      | `'MMMM d, y, h:mm:ss a z'`          | `June 15, 2015 at 9:03:01 AM GMT+1`             |\n * | `'full'`      | `'EEEE, MMMM d, y, h:mm:ss a zzzz'` | `Monday, June 15, 2015 at 9:03:01 AM GMT+01:00` |\n * | `'shortDate'` | `'M/d/yy'`                          | `6/15/15`                                       |\n * | `'mediumDate'`| `'MMM d, y'`                        | `Jun 15, 2015`                                  |\n * | `'longDate'`  | `'MMMM d, y'`                       | `June 15, 2015`                                 |\n * | `'fullDate'`  | `'EEEE, MMMM d, y'`                 | `Monday, June 15, 2015`                         |\n * | `'shortTime'` | `'h:mm a'`                          | `9:03 AM`                                       |\n * | `'mediumTime'`| `'h:mm:ss a'`                       | `9:03:01 AM`                                    |\n * | `'longTime'`  | `'h:mm:ss a z'`                     | `9:03:01 AM GMT+1`                              |\n * | `'fullTime'`  | `'h:mm:ss a zzzz'`                  | `9:03:01 AM GMT+01:00`                          |\n *\n * ### Custom format options\n *\n * You can construct a format string using symbols to specify the components\n * of a date-time value, as described in the following table.\n * Format details depend on the locale.\n * Fields marked with (*) are only available in the extra data set for the given locale.\n *\n *  | Field type              | Format      | Description                                                   | Example Value                                              |\n *  |-------------------------|-------------|---------------------------------------------------------------|------------------------------------------------------------|\n *  | Era                     | G, GG & GGG | Abbreviated                                                   | AD                                                         |\n *  |                         | GGGG        | Wide                                                          | Anno Domini                                                |\n *  |                         | GGGGG       | Narrow                                                        | A                                                          |\n *  | Year                    | y           | Numeric: minimum digits                                       | 2, 20, 201, 2017, 20173                                    |\n *  |                         | yy          | Numeric: 2 digits + zero padded                               | 02, 20, 01, 17, 73                                         |\n *  |                         | yyy         | Numeric: 3 digits + zero padded                               | 002, 020, 201, 2017, 20173                                 |\n *  |                         | yyyy        | Numeric: 4 digits or more + zero padded                       | 0002, 0020, 0201, 2017, 20173                              |\n *  | ISO Week-numbering year | Y           | Numeric: minimum digits                                       | 2, 20, 201, 2017, 20173                                    |\n *  |                         | YY          | Numeric: 2 digits + zero padded                               | 02, 20, 01, 17, 73                                         |\n *  |                         | YYY         | Numeric: 3 digits + zero padded                               | 002, 020, 201, 2017, 20173                                 |\n *  |                         | YYYY        | Numeric: 4 digits or more + zero padded                       | 0002, 0020, 0201, 2017, 20173                              |\n *  | Month                   | M           | Numeric: 1 digit                                              | 9, 12                                                      |\n *  |                         | MM          | Numeric: 2 digits + zero padded                               | 09, 12                                                     |\n *  |                         | MMM         | Abbreviated                                                   | Sep                                                        |\n *  |                         | MMMM        | Wide                                                          | September                                                  |\n *  |                         | MMMMM       | Narrow                                                        | S                                                          |\n *  | Month standalone        | L           | Numeric: 1 digit                                              | 9, 12                                                      |\n *  |                         | LL          | Numeric: 2 digits + zero padded                               | 09, 12                                                     |\n *  |                         | LLL         | Abbreviated                                                   | Sep                                                        |\n *  |                         | LLLL        | Wide                                                          | September                                                  |\n *  |                         | LLLLL       | Narrow                                                        | S                                                          |\n *  | ISO Week of year        | w           | Numeric: minimum digits                                       | 1... 53                                                    |\n *  |                         | ww          | Numeric: 2 digits + zero padded                               | 01... 53                                                   |\n *  | Week of month           | W           | Numeric: 1 digit                                              | 1... 5                                                     |\n *  | Day of month            | d           | Numeric: minimum digits                                       | 1                                                          |\n *  |                         | dd          | Numeric: 2 digits + zero padded                               | 01                                                         |\n *  | Week day                | E, EE & EEE | Abbreviated                                                   | Tue                                                        |\n *  |                         | EEEE        | Wide                                                          | Tuesday                                                    |\n *  |                         | EEEEE       | Narrow                                                        | T                                                          |\n *  |                         | EEEEEE      | Short                                                         | Tu                                                         |\n *  | Week day standalone     | c, cc       | Numeric: 1 digit                                              | 2                                                          |\n *  |                         | ccc         | Abbreviated                                                   | Tue                                                        |\n *  |                         | cccc        | Wide                                                          | Tuesday                                                    |\n *  |                         | ccccc       | Narrow                                                        | T                                                          |\n *  |                         | cccccc      | Short                                                         | Tu                                                         |\n *  | Period                  | a, aa & aaa | Abbreviated                                                   | am/pm or AM/PM                                             |\n *  |                         | aaaa        | Wide (fallback to `a` when missing)                           | ante meridiem/post meridiem                                |\n *  |                         | aaaaa       | Narrow                                                        | a/p                                                        |\n *  | Period*                 | B, BB & BBB | Abbreviated                                                   | mid.                                                       |\n *  |                         | BBBB        | Wide                                                          | am, pm, midnight, noon, morning, afternoon, evening, night |\n *  |                         | BBBBB       | Narrow                                                        | md                                                         |\n *  | Period standalone*      | b, bb & bbb | Abbreviated                                                   | mid.                                                       |\n *  |                         | bbbb        | Wide                                                          | am, pm, midnight, noon, morning, afternoon, evening, night |\n *  |                         | bbbbb       | Narrow                                                        | md                                                         |\n *  | Hour 1-12               | h           | Numeric: minimum digits                                       | 1, 12                                                      |\n *  |                         | hh          | Numeric: 2 digits + zero padded                               | 01, 12                                                     |\n *  | Hour 0-23               | H           | Numeric: minimum digits                                       | 0, 23                                                      |\n *  |                         | HH          | Numeric: 2 digits + zero padded                               | 00, 23                                                     |\n *  | Minute                  | m           | Numeric: minimum digits                                       | 8, 59                                                      |\n *  |                         | mm          | Numeric: 2 digits + zero padded                               | 08, 59                                                     |\n *  | Second                  | s           | Numeric: minimum digits                                       | 0... 59                                                    |\n *  |                         | ss          | Numeric: 2 digits + zero padded                               | 00... 59                                                   |\n *  | Fractional seconds      | S           | Numeric: 1 digit                                              | 0... 9                                                     |\n *  |                         | SS          | Numeric: 2 digits + zero padded                               | 00... 99                                                   |\n *  |                         | SSS         | Numeric: 3 digits + zero padded (= milliseconds)              | 000... 999                                                 |\n *  | Zone                    | z, zz & zzz | Short specific non location format (fallback to O)            | GMT-8                                                      |\n *  |                         | zzzz        | Long specific non location format (fallback to OOOO)          | GMT-08:00                                                  |\n *  |                         | Z, ZZ & ZZZ | ISO8601 basic format                                          | -0800                                                      |\n *  |                         | ZZZZ        | Long localized GMT format                                     | GMT-8:00                                                   |\n *  |                         | ZZZZZ       | ISO8601 extended format + Z indicator for offset 0 (= XXXXX)  | -08:00                                                     |\n *  |                         | O, OO & OOO | Short localized GMT format                                    | GMT-8                                                      |\n *  |                         | OOOO        | Long localized GMT format                                     | GMT-08:00                                                  |\n *\n *\n * ### Format examples\n *\n * These examples transform a date into various formats,\n * assuming that `dateObj` is a JavaScript `Date` object for\n * year: 2015, month: 6, day: 15, hour: 21, minute: 43, second: 11,\n * given in the local time for the `en-US` locale.\n *\n * ```\n * {{ dateObj | date }}               // output is 'Jun 15, 2015'\n * {{ dateObj | date:'medium' }}      // output is 'Jun 15, 2015, 9:43:11 PM'\n * {{ dateObj | date:'shortTime' }}   // output is '9:43 PM'\n * {{ dateObj | date:'mm:ss' }}       // output is '43:11'\n * {{ dateObj | date:\"MMM dd, yyyy 'at' hh:mm a\" }}  // output is 'Jun 15, 2015 at 09:43 PM'\n * ```\n *\n * ### Usage example\n *\n * The following component uses a date pipe to display the current date in different formats.\n *\n * ```\n * @Component({\n *  selector: 'date-pipe',\n *  template: `<div>\n *    <p>Today is {{today | date}}</p>\n *    <p>Or if you prefer, {{today | date:'fullDate'}}</p>\n *    <p>The time is {{today | date:'h:mm a z'}}</p>\n *  </div>`\n * })\n * // Get the current date and time as a date-time value.\n * export class DatePipeComponent {\n *   today: number = Date.now();\n * }\n * ```\n *\n * @publicApi\n */\n@Pipe({\n  name: 'date',\n  standalone: true,\n})\nexport class DatePipe implements PipeTransform {\n  constructor(\n    @Inject(LOCALE_ID) private locale: string,\n    @Inject(DATE_PIPE_DEFAULT_TIMEZONE) @Optional() private defaultTimezone?: string | null,\n    @Inject(DATE_PIPE_DEFAULT_OPTIONS) @Optional() private defaultOptions?: DatePipeConfig | null,\n  ) {}\n\n  /**\n   * @param value The date expression: a `Date` object,  a number\n   * (milliseconds since UTC epoch), or an ISO string (https://www.w3.org/TR/NOTE-datetime).\n   * @param format The date/time components to include, using predefined options or a\n   * custom format string.  When not provided, the `DatePipe` looks for the value using the\n   * `DATE_PIPE_DEFAULT_OPTIONS` injection token (and reads the `dateFormat` property).\n   * If the token is not configured, the `mediumDate` is used as a value.\n   * @param timezone A timezone offset (such as `'+0430'`), or a standard UTC/GMT, or continental US\n   * timezone abbreviation. When not provided, the `DatePipe` looks for the value using the\n   * `DATE_PIPE_DEFAULT_OPTIONS` injection token (and reads the `timezone` property). If the token\n   * is not configured, the end-user's local system timezone is used as a value.\n   * @param locale A locale code for the locale format rules to use.\n   * When not supplied, uses the value of `LOCALE_ID`, which is `en-US` by default.\n   * See [Setting your app locale](guide/i18n/locale-id).\n   *\n   * @see {@link DATE_PIPE_DEFAULT_OPTIONS}\n   *\n   * @returns A date string in the desired format.\n   */\n  transform(\n    value: Date | string | number,\n    format?: string,\n    timezone?: string,\n    locale?: string,\n  ): string | null;\n  transform(value: null | undefined, format?: string, timezone?: string, locale?: string): null;\n  transform(\n    value: Date | string | number | null | undefined,\n    format?: string,\n    timezone?: string,\n    locale?: string,\n  ): string | null;\n  transform(\n    value: Date | string | number | null | undefined,\n    format?: string,\n    timezone?: string,\n    locale?: string,\n  ): string | null {\n    if (value == null || value === '' || value !== value) return null;\n\n    try {\n      const _format = format ?? this.defaultOptions?.dateFormat ?? DEFAULT_DATE_FORMAT;\n      const _timezone =\n        timezone ?? this.defaultOptions?.timezone ?? this.defaultTimezone ?? undefined;\n      return formatDate(value, _format, locale || this.locale, _timezone);\n    } catch (error) {\n      throw invalidPipeArgumentError(DatePipe, (error as Error).message);\n    }\n  }\n}\n"]}