/**
 * @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 html from '../../../ml_parser/ast';
import { InterpolationConfig } from '../../../ml_parser/interpolation_config';
import { ParseTreeResult } from '../../../ml_parser/parser';
/**
 * This visitor walks over HTML parse tree and converts information stored in
 * i18n-related attributes ("i18n" and "i18n-*") into i18n meta object that is
 * stored with other element's and attribute's information.
 */
export declare class I18nMetaVisitor implements html.Visitor {
    private interpolationConfig;
    private keepI18nAttrs;
    private _createI18nMessage;
    constructor(interpolationConfig?: InterpolationConfig, keepI18nAttrs?: boolean);
    private _generateI18nMessage;
    visitElement(element: html.Element, context: any): any;
    visitExpansion(expansion: html.Expansion, context: any): any;
    visitText(text: html.Text, context: any): any;
    visitAttribute(attribute: html.Attribute, context: any): any;
    visitComment(comment: html.Comment, context: any): any;
    visitExpansionCase(expansionCase: html.ExpansionCase, context: any): any;
}
export declare function processI18nMeta(htmlAstWithErrors: ParseTreeResult, interpolationConfig?: InterpolationConfig): ParseTreeResult;