interface Subjectimport { type Subject } from "https://deno.land/x/fresh_store@v1.0.2/mod.ts"; Type ParametersTPropertiesreadonlystate: TMethodsattach(observer: Observer<T>): voiddetach(observer: Observer<T>): voidnotify(): voidset(options: T): voidset(options: (prevState: T) => T): void