export class Interval extends Array_ {
    updateSpan(): any;
    a: any;
    b: number | undefined;
    callback(callback: any): ((emit: any, i: any) => any) | undefined;
    last: any;
    _callback: ((emit: any, i: any) => any) | undefined;
    unmake(): any;
    change(changed: any, touched: any, init: any): void;
}
import { Array_ } from "./array.js";