import { Subject } from "../persistence/Subject";
/**
 * Thrown when operation is going to be executed on a subject without identifier.
 * This error should never be thrown, however it still presents to prevent user from updation or removing the whole table.
 * If this error occurs still, it most probably is an ORM internal problem which must be reported and fixed.
 */
export declare class SubjectWithoutIdentifierError extends Error {
    name: string;
    constructor(subject: Subject);
}