import { FixedSizeVirtualScrollStrategy } from "@angular/cdk/scrolling";
import { AfterViewInit, ChangeDetectorRef, ElementRef, OnChanges, OnDestroy, SimpleChanges } from "@angular/core";
import * as i0 from "@angular/core";
export declare class TableVirtualScrollStrategy extends FixedSizeVirtualScrollStrategy {
    constructor(itemSize: number, minBuffer: number, maxBuffer: number);
}
export declare function factory(dir: TableVirtualScrollDirective): TableVirtualScrollStrategy;
export declare class TableVirtualScrollDirective implements OnChanges, AfterViewInit, OnDestroy {
    private ref;
    private cd;
    constructor(ref: ElementRef, cd: ChangeDetectorRef);
    rowHeight: number | 'auto';
    minBuffer: number;
    maxBuffer: number;
    scrollStrategy: TableVirtualScrollStrategy;
    private mutationObserver?;
    private measuredRowHeight;
    ngOnChanges(changes: SimpleChanges): void;
    ngAfterViewInit(): void;
    ngOnDestroy(): void;
    private applyStrategySize;
    private getItemSize;
    private startAutoRowHeightSync;
    private measureAndUpdateRowHeight;
    static ɵfac: i0.ɵɵFactoryDeclaration<TableVirtualScrollDirective, never>;
    static ɵdir: i0.ɵɵDirectiveDeclaration<TableVirtualScrollDirective, "cdk-virtual-scroll-viewport[tableVirtualScrollStrategy]", never, { "rowHeight": { "alias": "rowHeight"; "required": false; }; "minBuffer": { "alias": "minBuffer"; "required": false; }; "maxBuffer": { "alias": "maxBuffer"; "required": false; }; }, {}, never, never, false, never>;
}