/**
 * Options for copyable feature.
 * @property {string} [copyText] Text shown on the copy button
 * @property {string} [copiedText] Text shown after successful copy
 * @property {number} [timeout] How long to show copiedText (ms)
 * @property {'left'|'right'} [align] Copy button alignment
 */
export interface CopyableOptions {
    copyText?: string;
    copiedText?: string;
    timeout?: number;
    align?: 'left' | 'right';
}
/**
 * Props for JsonViewerElement.
 * @property {object | Array<any> | string | number | boolean} value JSON data to display
 * @property {number} [expandDepth] Initial expand depth
 * @property {boolean|CopyableOptions} [copyable] Enable copy button
 * @property {boolean} [sort] Whether to sort object keys
 * @property {boolean} [boxed] Whether to show a box around the viewer
 * @property {'light'|'dark'} [theme] Theme
 * @property {boolean} [parse] Whether to parse string value as JSON
 */
export interface JsonViewerElementProps {
    value: object | Array<any> | string | number | boolean;
    expandDepth?: number;
    copyable?: boolean | CopyableOptions;
    sort?: boolean;
    boxed?: boolean;
    theme?: 'light' | 'dark';
    parse?: boolean;
}
export declare class JsonViewerElement extends HTMLElement {
    static get observedAttributes(): string[];
    private _value;
    private root;
    private container;
    constructor();
    connectedCallback(): void;
    attributeChangedCallback(): void;
    set value(v: any);
    get value(): any;
    set sort(v: boolean);
    get sort(): boolean;
    set parse(v: boolean);
    get parse(): boolean;
    set copyable(v: CopyableOptions | false);
    get copyable(): CopyableOptions | false;
    private get expandDepth();
    /**
     * Copy text to clipboard. Uses Clipboard API if available, otherwise fallback.
     */
    private copyText;
    /**
     * Render the JSON viewer.
     */
    private render;
    /**
     * Recursively build the JSON tree.
     */
    private build;
    /**
     * Create a leaf node for primitive values.
     */
    private leaf;
}
declare global {
    interface HTMLElementTagNameMap {
        'json-viewer': JsonViewerElement;
    }
}