import * as Bunyan from "bunyan";
import { CallHandler, ExecutionContext, NestInterceptor } from '@nestjs/common';
import { Observable } from 'rxjs';
import { IdentityBill } from '../types';
import { RightsTree } from './rights-tree';
import { IdentifiedExpressRequest } from '../helper-types';
export interface HttpAuthzOptions<TIdentity extends IdentityBill> {
    tree: RightsTree<TIdentity, IdentifiedExpressRequest<TIdentity>>;
    logger?: Bunyan;
}
export declare class HttpAuthzInterceptor<TIdentity extends IdentityBill = IdentityBill> implements NestInterceptor {
    private readonly _options;
    private readonly _tree;
    private readonly _logger;
    constructor(_options: HttpAuthzOptions<TIdentity>);
    private _forbidden;
    private _getScopes;
    private _validateScopesAgainstGrants;
    private _validateScopeAgainstRights;
    private _validateScopesAgainstRights;
    intercept(context: ExecutionContext, next: CallHandler): Promise<Observable<any>>;
}