/**
 * @license
 * Copyright 2024 Google LLC
 * SPDX-License-Identifier: Apache-2.0
 */
export interface OAuthStateParameter {
    nonce: string;
    connectionId: string;
}
export declare function oauthTokenBroadcastChannelName(nonce: string): string;
export type GrantResponse = {
    error: string;
} | {
    error?: undefined;
    access_token: string;
    expires_in: number;
    refresh_token: string;
};
export interface GrantSettingsValue {
    access_token: string;
    expires_in: number;
    refresh_token: string;
    issue_time: number;
}
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