import { ISubject } from '../interfaces/subject';
import { TSubjectPrincipal } from '../types/subject-principal';
export declare abstract class Subject<T extends object> implements ISubject<T> {
    private data;
    constructor(data: T);
    abstract getPrincipal(): TSubjectPrincipal;
    get<K extends keyof T>(key: K): T[K];
    set<K extends keyof T>(key: K, value: T[K]): this;
}