/**
 * `<miura-island>` — Islands architecture / partial hydration wrapper.
 *
 * Wraps server-rendered static HTML and lazily hydrates a miura (or any
 * custom-element) component when the chosen strategy fires.
 *
 * ## Attributes
 *
 * | Attribute   | Values                        | Default  | Description |
 * |-------------|-------------------------------|----------|-------------|
 * | `component` | custom element tag name       | —        | **Required.** Tag name to instantiate on hydration. |
 * | `hydrate`   | `"load"` `"visible"` `"idle"` | `"load"` | When to hydrate. |
 * | `data-props`| JSON string                   | —        | Props to apply (alternative to `<script>` child). |
 *
 * ## Props channel
 *
 * Props are read from the **first** matching source:
 * 1. `<script type="application/json">` child element (recommended for SSR)
 * 2. `data-props` attribute
 *
 * Props are applied as **properties** (not attributes) on the created element
 * so arrays, objects, numbers, and booleans all round-trip correctly.
 *
 * ## Usage
 *
 * ```html
 * <!-- Hydrate immediately on page load (default) -->
 * <miura-island component="my-counter">
 *   <script type="application/json">{"count": 5}</script>
 *   <!-- SSR placeholder shown until JS runs -->
 *   <my-counter count="5">5</my-counter>
 * </miura-island>
 *
 * <!-- Hydrate only when the island scrolls into view -->
 * <miura-island component="app-chart" hydrate="visible">
 *   <script type="application/json">{"data": [1, 2, 3]}</script>
 *   <div class="chart-placeholder">Loading…</div>
 * </miura-island>
 *
 * <!-- Hydrate during browser idle time -->
 * <miura-island component="like-button" hydrate="idle" data-props='{"liked":false}'>
 * </miura-island>
 * ```
 *
 * ## Events
 *
 * - `miura-island:hydrated` — dispatched on the `<miura-island>` element after
 *   the component is mounted. `event.detail.element` is the created component.
 */
export declare class MiuraIsland extends HTMLElement {
    static get observedAttributes(): string[];
    private _hydrated;
    private _io;
    private _propsCache;
    private _hydratedElement;
    connectedCallback(): void;
    disconnectedCallback(): void;
    /**
     * Imperatively trigger hydration regardless of strategy.
     * Safe to call multiple times — hydrates only once.
     */
    hydrate(): void;
    get props(): Record<string, unknown>;
    get hydratedElement(): Element | null;
    private _hydrate;
    private _readProps;
    private _scheduleVisible;
    private _scheduleIdle;
}
export declare function findIslandHost(node: Node | null): MiuraIsland | null;
export declare function readIslandProps<T extends Record<string, any> = Record<string, any>>(node: Node | null): T | undefined;
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