import { Result, ParentInfo } from "./visitor";
import { SuperNode } from './transformer';
import { Class } from './types';
declare type VisitorExtension = (next: VisitorInvocation) => Result;
interface VisitorInit {
    value: {};
    ast: SuperNode;
    path: string;
    decorators: any[];
    parent?: ParentInfo;
}
interface VisitorInvocation extends VisitorInit {
    readonly type: Class;
    proceed(): Result;
}
declare class VisitorInvocationImpl implements VisitorInvocation {
    private visitor;
    value: {};
    ast: SuperNode;
    path: string;
    decorators: any[];
    parent?: ParentInfo;
    get type(): Class<any>;
    constructor(visitor: (i: VisitorInvocation) => Result, init: VisitorInit);
    proceed(): Result;
}
declare function pipe(extensions: VisitorExtension[], last: VisitorInvocation): VisitorInvocation;
export { pipe, VisitorExtension, VisitorInvocation, VisitorInvocationImpl };