declare class CustomButton extends HTMLElement {
    defaultStyles: string;
    minValues: {
        [key: string]: number;
    };
    static get observedAttributes(): string[];
    value: string;
    constructor();
    connectedCallback(): void;
    attributeChangedCallback(name: string, oldValue: string, newValue: string): void;
    mergeStyles(defaultStyles: string, newStyles: string): string;
}
export default CustomButton;