import { OnDestroy, ElementRef, AfterViewInit, Renderer2 } from '@angular/core';
export declare class PlaceholderDirective implements AfterViewInit, OnDestroy {
    private elementRef;
    private renderer2;
    set placeholder(val: string);
    get placeholder(): string;
    private value;
    private placeholderElement;
    private shadowEle;
    private _placeholder;
    private unbind;
    private inputStyles;
    private animateId;
    constructor(elementRef: ElementRef, renderer2: Renderer2);
    ngAfterViewInit(): void;
    ngOnDestroy(): void;
}