/**
 * @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 * as i18n from '../i18n_ast';
export declare abstract class Serializer {
    abstract write(messages: i18n.Message[]): string;
    abstract load(content: string, url: string): {
        [msgId: string]: i18n.Node[];
    };
    abstract digest(message: i18n.Message): string;
    createNameMapper(message: i18n.Message): PlaceholderMapper;
}
/**
 * A `PlaceholderMapper` converts placeholder names from internal to serialized representation and
 * back.
 *
 * It should be used for serialization format that put constraints on the placeholder names.
 */
export interface PlaceholderMapper {
    toPublicName(internalName: string): string;
    toInternalName(publicName: string): string;
}