/**
 * BearerTokenProvider
 *
 * Handles Bearer Token Authentication.
 * Supports @auth bearer directive and Authorization: Bearer header.
 */
import { HttpRequest } from '../types';
import { IAuthProvider, AuthContext } from './IAuthProvider';
export declare class BearerTokenProvider implements IAuthProvider {
    readonly name = "bearer";
    canHandle(request: HttpRequest): boolean;
    applyAuth(request: HttpRequest, context: AuthContext): Promise<HttpRequest>;
    private getAuthHeader;
    private replaceVariables;
}