/**
 * @template T
 * @template {Record<string, any>} A
 * @typedef {import("svelte/action").ActionReturn<T, A>} ActionReturn<T, A>
 */
/**
 * @typedef {CustomEvent<IntersectionObserverEntry>} IntersectionEvent
 * @typedef {{ "on:intersectionchanged"?: (e: IntersectionEvent) => void }} Attributes
 */
/**
 * Observe all changes to the intersection of the given element with the target element, (by default the viewport).
 *
 * @param {Element} node
 * @param {{ root?: Element | Document | null, rootMargin?: string }} [params]
 * @returns {ActionReturn<void, Attributes>}
 */
export function intersectionObserver(node: Element, params?: {
    root?: Element | Document | null;
    rootMargin?: string;
}): ActionReturn<void, Attributes>;
/**
 * <T, A>
 */
export type ActionReturn<T, A extends Record<string, any>> = import("svelte/action").ActionReturn<T, A>;
export type IntersectionEvent = CustomEvent<IntersectionObserverEntry>;
export type Attributes = {
    "on:intersectionchanged"?: (e: IntersectionEvent) => void;
};