import { ElementRef, OnChanges, Renderer2, SimpleChanges, ViewContainerRef } from '@angular/core';
import * as i0 from "@angular/core";
export declare abstract class AskBaseButtonDirective implements OnChanges {
    private viewContainerRef;
    private el;
    private renderer;
    color: ButtonColor;
    size: ButtonSize;
    icon: string;
    private className;
    private iconComponentRef?;
    constructor(className: string, viewContainerRef: ViewContainerRef, el: ElementRef, renderer: Renderer2);
    ngOnChanges(changes: SimpleChanges): void;
    private updateColor;
    private updateSize;
    private updateIcon;
    static ɵfac: i0.ɵɵFactoryDeclaration<AskBaseButtonDirective, never>;
    static ɵdir: i0.ɵɵDirectiveDeclaration<AskBaseButtonDirective, never, never, { "color": { "alias": "color"; "required": false; }; "size": { "alias": "size"; "required": false; }; "icon": { "alias": "icon"; "required": false; }; }, {}, never, never, false, never>;
}
type ButtonSize = 'x-large' | 'large' | 'default' | 'medium' | 'small' | 'mini' | 'x-mini';
export type ButtonAppearance = 'outline' | 'text' | 'default';
export type ButtonColor = 'primary' | 'secondary' | 'danger';
export {};