export declare class HttpError extends Error {
    readonly status: number;
    readonly details?: unknown;
    constructor(status: number, message: string, details?: unknown);
    toJSON(): {
        details?: {} | null | undefined;
        error: string;
        status: number;
    };
}
export declare const errors: {
    badRequest: (message?: string, details?: unknown) => HttpError;
    unauthorized: (message?: string, details?: unknown) => HttpError;
    forbidden: (message?: string, details?: unknown) => HttpError;
    notFound: (message?: string, details?: unknown) => HttpError;
    conflict: (message?: string, details?: unknown) => HttpError;
    unprocessable: (message?: string, details?: unknown) => HttpError;
    internal: (message?: string, details?: unknown) => HttpError;
    serviceUnavailable: (message?: string, details?: unknown) => HttpError;
};
/**
 * Map common Postgres SQLSTATE codes to a sensible HTTP status + structured
 * body. Returns `null` if the error doesn't carry a recognised pg code.
 *
 * - 23505 unique_violation       → 409 Conflict
 * - 23503 foreign_key_violation  → 422 Unprocessable Entity
 * - 23502 not_null_violation     → 400 Bad Request
 * - 23514 check_violation        → 400 Bad Request
 */
export declare function pgErrorToHttpError(err: unknown): HttpError | null;
/**
 * Map @mathislair/mtbdb's ConnectionError (duck-typed by name + reason) to an
 * HTTP status. Reaches mtbrest when a route runs against a Connection whose
 * pool died mid-request, or in lazy connect modes.
 */
export declare function connectionErrorToHttpError(err: unknown): HttpError | null;
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