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/**
* @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
*/
/// <amd-module name="@angular/core/schematics/migrations/template-var-assignment/angular/html_variable_assignment_visitor" />
import { PropertyWrite } from '@angular/compiler';
import { BoundEvent, Element, NullVisitor, Template } from '@angular/compiler/src/render3/r3_ast';
export interface TemplateVariableAssignment {
start: number;
end: number;
node: PropertyWrite;
}
/**
* HTML AST visitor that traverses the Render3 HTML AST in order to find all
* expressions that write to local template variables within bound events.
*/
export declare class HtmlVariableAssignmentVisitor extends NullVisitor {
variableAssignments: TemplateVariableAssignment[];
private currentVariables;
private expressionAstVisitor;
visitElement(element: Element): void;
visitTemplate(template: Template): void;
visitBoundEvent(node: BoundEvent): void;
}