/**
 * Base class for all OAuth 2.0 errors.
 *
 * @see https://datatracker.ietf.org/doc/html/rfc6749#section-5.2
 */
export declare class OAuth2Error extends Error {
    /** HTTP status code to return. */
    readonly statusCode: number;
    /** The OAuth 2.0 `error` code string. */
    readonly errorCode: string;
    errorUri?: string;
    constructor(message: string, statusCode?: number, errorCode?: string, errorUri?: string);
}
/**
 * An error that encapsulates multiple OAuth2Error instances, such as when trying multiple flows in OIDCMultipleFlows.
 * The individual errors can be accessed via the `errors` property.
 */
export declare class OAuth2Errors extends OAuth2Error {
    readonly errors: OAuth2Error[];
    constructor(errors: OAuth2Error[]);
}
/** The request is missing a required parameter or is otherwise malformed. */
export declare class InvalidRequestError extends OAuth2Error {
    constructor(message?: string, errorUri?: string);
}
/** Client authentication failed. */
export declare class InvalidClientError extends OAuth2Error {
    constructor(message?: string, errorUri?: string);
}
/** The provided grant (code, credentials, refresh token) is invalid or expired. */
export declare class InvalidGrantError extends OAuth2Error {
    constructor(message?: string, errorUri?: string);
}
/** The client is not authorized to use the requested grant type. */
export declare class UnauthorizedClientError extends OAuth2Error {
    constructor(message?: string, errorUri?: string);
}
/** The grant type is not supported by the server. */
export declare class UnsupportedGrantTypeError extends OAuth2Error {
    constructor(message?: string, errorUri?: string);
}
/** The requested scope is invalid, unknown, or exceeds what is allowed. */
export declare class InvalidScopeError extends OAuth2Error {
    constructor(message?: string, errorUri?: string);
}
/** The resource owner denied the authorization request. */
export declare class AccessDeniedError extends OAuth2Error {
    constructor(message?: string, errorUri?: string);
}
/** The authorization request is still pending. The client should keep polling. */
export declare class AuthorizationPendingError extends OAuth2Error {
    constructor(message?: string, errorUri?: string);
}
/** The client is polling too quickly. Increase interval by 5 seconds. */
export declare class SlowDownError extends OAuth2Error {
    constructor(message?: string, errorUri?: string);
}
/** The device code has expired. The client should request a new device code. */
export declare class ExpiredTokenError extends OAuth2Error {
    constructor(message?: string, errorUri?: string);
}
/** The response type is not supported by the authorization server. */
export declare class UnsupportedResponseTypeError extends OAuth2Error {
    constructor(message?: string, errorUri?: string);
}
/** An unexpected server error occurred. */
export declare class ServerError extends OAuth2Error {
    constructor(message?: string, errorUri?: string);
}
/** The access token is expired, revoked, or otherwise invalid. */
export declare class InvalidTokenError extends OAuth2Error {
    constructor(message?: string, errorUri?: string);
}
/** The token does not have sufficient scope for the requested resource. */
export declare class InsufficientScopeError extends OAuth2Error {
    constructor(message?: string, errorUri?: string);
}
/** The request requires authentication but none was provided. */
export declare class UnauthorizedRequestError extends OAuth2Error {
    constructor(message?: string, errorUri?: string);
}
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