import { EventEmitter } from '@angular/core';
export declare class USWDSButtonComponent {
    secondary: boolean;
    accentCool: boolean;
    accentWarm: boolean;
    base: boolean;
    outline: boolean;
    inverse: boolean;
    big: boolean;
    unstyled: boolean;
    /** Screenreaders will typically read the text of the button on focus. However, if there is no
     * readable text - ex: button contains an icon - then this field can be used to define the label
     * of the button
     */
    ariaLabel: string;
    /**
     * If the button is part of a group of element and controls open/close state of another element,
     * then ariaControls and ariaExpanded values can be passed in
     */
    ariaControls: string;
    ariaExpanded: boolean;
    click: EventEmitter<MouseEvent>;
    onClick($event: any): void;
}