import type { CdkVirtualScrollViewport, VirtualScrollStrategy } from '@angular/cdk/scrolling';
import type { TuiScrollService } from '@taiga-ui/cdk/services';
import type { Observable } from 'rxjs';
/**
 * This scroll strategy is hard wired with styles for iOS and Android.
 * It is dependent on month height on those platforms and is designed to
 * work for {@link TuiMobileCalendar} with years 1906 to 2102
 */
export declare class TuiMobileCalendarStrategy implements VirtualScrollStrategy {
    private readonly isIOS;
    private readonly scrollService;
    private readonly index$;
    private viewport;
    private readonly destroy$;
    constructor(isIOS: boolean, scrollService: TuiScrollService);
    get scrolledIndexChange(): Observable<number>;
    attach(viewport: CdkVirtualScrollViewport): void;
    detach(): void;
    onContentScrolled(): void;
    /** These do not matter for this case */
    onDataLengthChanged(): void;
    onContentRendered(): void;
    onRenderedOffsetChanged(): void;
    scrollToIndex(index: number, behavior: ScrollBehavior): void;
    private getOffsetForIndex;
    private getIndexForOffset;
    private computeHeight;
    private updateRenderedRange;
}