import { Done } from '../../../../../Class/Functional/Done';
import { Semifunctional } from '../../../../../Class/Semifunctional';
import { System } from '../../../../../system';
import { Component_ } from '../../../../../types/interface/Component';
import { OB } from '../../../../../types/interface/OB';
export type I = {
    root: Component_;
    opt: IntersectionObserverInit;
    done: any;
};
export type O = {
    observer: OB;
};
export default class IntersectionObserver_ extends Semifunctional<I, O> {
    constructor(system: System);
    f({ root }: I, done: Done<O>): Promise<void>;
    d(): void;
}
