export interface ArsChatMessage {
    role: "assistant" | "system" | "user";
    content: string;
}
declare class ArsChatPanel extends HTMLElement {
    #private;
    private _messages;
    private _draftValue;
    private _expandTimeout;
    static get observedAttributes(): string[];
    constructor();
    connectedCallback(): void;
    disconnectedCallback(): void;
    attributeChangedCallback(): void;
    get title(): string;
    set title(value: string);
    get subtitle(): string;
    set subtitle(value: string);
    get placeholder(): string;
    set placeholder(value: string);
    get typing(): boolean;
    set typing(value: boolean);
    get collapsible(): boolean;
    set collapsible(value: boolean);
    get collapsed(): boolean;
    set collapsed(value: boolean);
    get messages(): ArsChatMessage[];
    set messages(value: ArsChatMessage[]);
}
export { ArsChatPanel, ArsChatPanel as default };