import type { BaseClientOptions } from "../BaseClient";
import * as core from "../core";
declare const CLIENT_ID_PARAM: "clientId";
declare const CLIENT_SECRET_PARAM: "clientSecret";
declare const TOKEN_PARAM: "token";
export declare class OAuthAuthProvider implements core.AuthProvider {
    private readonly options;
    private readonly authClient;
    private accessToken;
    private expiresAt;
    private refreshPromise;
    constructor(options: OAuthAuthProvider.Options & OAuthAuthProvider.ClientCredentials);
    static canCreate(options?: Partial<OAuthAuthProvider.ClientCredentials & BaseClientOptions>): boolean;
    private clientIdSupplier;
    private clientSecretSupplier;
    getAuthRequest({ endpointMetadata, }?: {
        endpointMetadata?: core.EndpointMetadata;
    }): Promise<core.AuthRequest>;
    private getToken;
    private refresh;
    private getExpiresAt;
}
export declare class OAuthTokenOverrideAuthProvider implements core.AuthProvider {
    private readonly options;
    constructor(options: OAuthAuthProvider.TokenOverride);
    static canCreate(options?: Partial<OAuthAuthProvider.TokenOverride & BaseClientOptions>): options is OAuthAuthProvider.TokenOverride;
    getAuthRequest({ endpointMetadata, }?: {
        endpointMetadata?: core.EndpointMetadata;
    }): Promise<core.AuthRequest>;
}
export declare namespace OAuthAuthProvider {
    const AUTH_SCHEME: "OAuthScheme";
    const AUTH_CONFIG_ERROR_MESSAGE: string;
    type ClientCredentials = {
        [CLIENT_ID_PARAM]: core.Supplier<string>;
        [CLIENT_SECRET_PARAM]: core.Supplier<string>;
    };
    type TokenOverride = {
        [TOKEN_PARAM]: core.Supplier<string>;
    };
    type AuthOptions = ClientCredentials | TokenOverride;
    type Options = BaseClientOptions & AuthOptions;
    function createInstance(options: Options): core.AuthProvider;
}
export {};