import { NgFor } from "@angular/common";
import { OnChanges, TemplateRef, ViewContainerRef } from "@angular/core";
import * as i0 from "@angular/core";
export declare class NgForDirective<T> implements OnChanges {
    private ngFor;
    private viewContainerRef;
    ngForOf?: Iterable<T> | null;
    set ngForTrackByProp(prop: keyof T);
    ngForEmpty?: TemplateRef<unknown>;
    private ngForEmptyViewRef?;
    constructor(ngFor: NgFor<T>, viewContainerRef: ViewContainerRef);
    ngOnChanges(): void;
    static ɵfac: i0.ɵɵFactoryDeclaration<NgForDirective<any>, [{ self: true; }, null]>;
    static ɵdir: i0.ɵɵDirectiveDeclaration<NgForDirective<any>, "[ngFor]", never, { "ngForOf": "ngForOf"; "ngForTrackByProp": "ngForTrackByProp"; "ngForEmpty": "ngForEmpty"; }, {}, never, never, false>;
}