@ionic/core/dist/types/components/content/content-interface.d.ts

import { GestureDetail } from '../../interface';
export interface ScrollBaseDetail {
  isScrolling: boolean;
}
export interface ScrollDetail extends GestureDetail, ScrollBaseDetail {
  scrollTop: number;
  scrollLeft: number;
}
export declare type ScrollCallback = (detail?: ScrollDetail) => boolean | void;