@angular/common
Version:
Angular - commonly needed directives and services
60 lines • 6.12 kB
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 { Pipe } from '@angular/core';
import { getPluralCategory, NgLocalization } from '../i18n/localization';
import { invalidPipeArgumentError } from './invalid_pipe_argument_error';
import * as i0 from "@angular/core";
import * as i1 from "../i18n/localization";
const _INTERPOLATION_REGEXP = /#/g;
/**
* @ngModule CommonModule
* @description
*
* Maps a value to a string that pluralizes the value according to locale rules.
*
* @usageNotes
*
* ### Example
*
* {@example common/pipes/ts/i18n_pipe.ts region='I18nPluralPipeComponent'}
*
* @publicApi
*/
class I18nPluralPipe {
constructor(_localization) {
this._localization = _localization;
}
/**
* @param value the number to be formatted
* @param pluralMap an object that mimics the ICU format, see
* https://unicode-org.github.io/icu/userguide/format_parse/messages/.
* @param locale a `string` defining the locale to use (uses the current {@link LOCALE_ID} by
* default).
*/
transform(value, pluralMap, locale) {
if (value == null)
return '';
if (typeof pluralMap !== 'object' || pluralMap === null) {
throw invalidPipeArgumentError(I18nPluralPipe, pluralMap);
}
const key = getPluralCategory(value, Object.keys(pluralMap), this._localization, locale);
return pluralMap[key].replace(_INTERPOLATION_REGEXP, value.toString());
}
static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "16.0.3", ngImport: i0, type: I18nPluralPipe, deps: [{ token: i1.NgLocalization }], target: i0.ɵɵFactoryTarget.Pipe }); }
static { this.ɵpipe = i0.ɵɵngDeclarePipe({ minVersion: "14.0.0", version: "16.0.3", ngImport: i0, type: I18nPluralPipe, isStandalone: true, name: "i18nPlural" }); }
}
export { I18nPluralPipe };
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "16.0.3", ngImport: i0, type: I18nPluralPipe, decorators: [{
type: Pipe,
args: [{
name: 'i18nPlural',
pure: true,
standalone: true,
}]
}], ctorParameters: function () { return [{ type: i1.NgLocalization }]; } });
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