/**
 * Auth adapter error surface.
 *
 * Each class is its own subclass (not a bare `Error`) so integrators can
 * branch on `instanceof` — e.g. treat a configuration error as a setup
 * mistake and a verification/authorize error as a request-time failure —
 * without string-matching messages.
 *
 * The package's tsconfig targets a pre-ES2022 `lib`, so the native
 * `ErrorOptions` `cause` parameter isn't available here: each constructor
 * takes an explicit `options.cause` and assigns it as an own property.
 */
export declare class ShopifyAuthConfigurationError extends Error {
    cause?: unknown;
    constructor(message: string, options?: {
        cause?: unknown;
    });
}
export declare class ShopifyIdTokenVerificationError extends Error {
    cause?: unknown;
    constructor(message: string, options?: {
        cause?: unknown;
    });
}
export declare class FanfareExternalAuthorizeError extends Error {
    cause?: unknown;
    /** Set only when an HTTP response was received; absent for network/read/serialization failures. */
    status?: number;
    /** Response text, truncated to 500 chars. */
    body?: string;
    constructor(message: string, options?: {
        cause?: unknown;
        status?: number;
        body?: string;
    });
}