import type { OAuthStore } from './store.js';
export type RefreshTokenGrantFailureReason = 'invalid_refresh_token' | 'refresh_client_mismatch' | 'refresh_resource_mismatch';
export declare class RefreshTokenGrantError extends Error {
    readonly reason: RefreshTokenGrantFailureReason;
    constructor(reason: RefreshTokenGrantFailureReason, message?: string);
}
export declare function isRefreshTokenGrantError(error: unknown): error is RefreshTokenGrantError;
export declare function completeRefreshTokenGrant(store: OAuthStore, input: {
    refreshToken: string;
    clientId?: string;
    resource?: string;
}): Promise<{
    accessToken: string;
    tokenType: string;
    expiresIn: number;
    refreshToken: string;
}>;
//# sourceMappingURL=refresh.d.ts.map