/**
 * @license
 * Copyright Google Inc. 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 { PipeTransform } from '@angular/core';
/**
 * @ngModule CommonModule
 * @whatItDoes Formats a number according to locale rules.
 * @howToUse `number_expression | number[:digitInfo]`
 *
 * Formats a number as text. Group sizing and separator and other locale-specific
 * configurations are based on the active locale.
 *
 * where `expression` is a number:
 *  - `digitInfo` is a `string` which has a following format: <br>
 *     <code>{minIntegerDigits}.{minFractionDigits}-{maxFractionDigits}</code>
 *   - `minIntegerDigits` is the minimum number of integer digits to use. Defaults to `1`.
 *   - `minFractionDigits` is the minimum number of digits after fraction. Defaults to `0`.
 *   - `maxFractionDigits` is the maximum number of digits after fraction. Defaults to `3`.
 *
 * For more information on the acceptable range for each of these numbers and other
 * details see your native internationalization library.
 *
 * WARNING: this pipe uses the Internationalization API which is not yet available in all browsers
 * and may require a polyfill. See {@linkDocs guide/browser-support} for details.
 *
 * ### Example
 *
 * {@example common/pipes/ts/number_pipe.ts region='NumberPipe'}
 *
 * @stable
 */
export declare class DecimalPipe implements PipeTransform {
    private _locale;
    constructor(_locale: string);
    transform(value: any, digits?: string): string;
}
/**
 * @ngModule CommonModule
 * @whatItDoes Formats a number as a percentage according to locale rules.
 * @howToUse `number_expression | percent[:digitInfo]`
 *
 * @description
 *
 * Formats a number as percentage.
 *
 * - `digitInfo` See {@link DecimalPipe} for detailed description.
 *
 * WARNING: this pipe uses the Internationalization API which is not yet available in all browsers
 * and may require a polyfill. See {@linkDocs guide/browser-support} for details.
 *
 * ### Example
 *
 * {@example common/pipes/ts/number_pipe.ts region='PercentPipe'}
 *
 * @stable
 */
export declare class PercentPipe implements PipeTransform {
    private _locale;
    constructor(_locale: string);
    transform(value: any, digits?: string): string;
}
/**
 * @ngModule CommonModule
 * @whatItDoes Formats a number as currency using locale rules.
 * @howToUse `number_expression | currency[:currencyCode[:symbolDisplay[:digitInfo]]]`
 * @description
 *
 * Use `currency` to format a number as currency.
 *
 * - `currencyCode` is the [ISO 4217](https://en.wikipedia.org/wiki/ISO_4217) currency code, such
 *    as `USD` for the US dollar and `EUR` for the euro.
 * - `symbolDisplay` is a boolean indicating whether to use the currency symbol or code.
 *   - `true`: use symbol (e.g. `$`).
 *   - `false`(default): use code (e.g. `USD`).
 * - `digitInfo` See {@link DecimalPipe} for detailed description.
 *
 * WARNING: this pipe uses the Internationalization API which is not yet available in all browsers
 * and may require a polyfill. See {@linkDocs guide/browser-support} for details.
 *
 * ### Example
 *
 * {@example common/pipes/ts/number_pipe.ts region='CurrencyPipe'}
 *
 * @stable
 */
export declare class CurrencyPipe implements PipeTransform {
    private _locale;
    constructor(_locale: string);
    transform(value: any, currencyCode?: string, symbolDisplay?: boolean, digits?: string): string;
}