import { ElementRef, OnChanges, OnInit } from '@angular/core';
import { CssClassBuilder } from '@fundamental-ngx/cdk/utils';
import * as i0 from "@angular/core";
/**
 * Applies a thumb styles
 */
export declare class FeedInputAvatarDirective implements OnInit, OnChanges, CssClassBuilder {
    readonly elementRef: ElementRef<HTMLElement>;
    /** Apply user custom styles */
    class: string;
    /** @hidden */
    placeholder: boolean;
    /** @hidden */
    constructor(elementRef: ElementRef<HTMLElement>);
    /** @hidden */
    buildComponentCssClass(): string[];
    /** @hidden */
    ngOnInit(): void;
    /** @hidden */
    ngOnChanges(): void;
    static ɵfac: i0.ɵɵFactoryDeclaration<FeedInputAvatarDirective, never>;
    static ɵdir: i0.ɵɵDirectiveDeclaration<FeedInputAvatarDirective, "[fdFeedInputAvatar]", never, { "class": { "alias": "class"; "required": false; }; "placeholder": { "alias": "placeholder"; "required": false; }; }, {}, never, never, true, never>;
}
