import { Functional } from '../../../../../Class/Functional';
import { Done } from '../../../../../Class/Functional/Done';
import { System } from '../../../../../system';
import { A } from '../../../../../types/interface/A';
export interface I<T> {
    a: A;
    i: number;
}
export interface O<T> {
    'a[i]': T;
}
export default class At<T> extends Functional<I<T>, O<T>> {
    constructor(system: System);
    f({ a, i }: I<T>, done: Done<O<T>>): Promise<void>;
}
