/**
 * Progressive hydration strategies.
 *
 * Provide thin wrappers around `hydrateMount()` that defer the hydration
 * pass until a chosen trigger fires. They are runtime-safe: in non-browser
 * environments they fall back to immediate hydration (or a no-op) so the
 * same code path can run in tests.
 *
 * @module bquery/ssr
 */
import type { BindingContext, View } from '../view/types';
import { type HydrateMountOptions } from './hydrate';
/** Common return shape for progressive hydration. */
export interface HydrationHandle {
    /** Cancels pending hydration (no-op if it has already run). */
    cancel(): void;
    /** Resolves with the View once hydration runs, or `null` if cancelled. */
    ready: Promise<View | null>;
}
/**
 * Hydrates the target only once it scrolls into view.
 *
 * Falls back to immediate hydration if `IntersectionObserver` is unavailable.
 */
export declare const hydrateOnVisible: (selector: string | Element, context: BindingContext, options?: HydrateMountOptions & {
    rootMargin?: string;
    threshold?: number;
}) => HydrationHandle;
/** Hydrates when the browser is idle. */
export declare const hydrateOnIdle: (selector: string | Element, context: BindingContext, options?: HydrateMountOptions) => HydrationHandle;
/** Hydrates on first user interaction (click/keydown/pointerdown/touchstart). */
export declare const hydrateOnInteraction: (selector: string | Element, context: BindingContext, options?: HydrateMountOptions & {
    events?: string[];
}) => HydrationHandle;
/** Hydrates only when a media query matches. */
export declare const hydrateOnMedia: (selector: string | Element, context: BindingContext, query: string, options?: HydrateMountOptions) => HydrationHandle;
/**
 * Hydrates a single SSR island using the same runtime-safe target resolution
 * as the other progressive hydration helpers. Returns `null` when the DOM is
 * unavailable or the target cannot be resolved.
 */
export declare const hydrateIsland: (selector: string | Element, context: BindingContext, options?: HydrateMountOptions) => View | null;
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