import { readable } from 'svelte/store';
import { BROWSER } from 'esm-env';
/** Prefers reduced motion  */
const reducedMotionQuery = '(prefers-reduced-motion: reduce)';
function prefersReducedMotion() {
    if (!BROWSER)
        return false;
    return window.matchMedia(reducedMotionQuery).matches;
}
/**
 * Indicates that the user has enabled reduced motion on their device.
 *
 * @see https://developer.mozilla.org/en-US/docs/Web/CSS/@media/prefers-reduced-motion
 */
export const prefersReducedMotionStore = readable(prefersReducedMotion(), (set) => {
    if (BROWSER) {
        const setReducedMotion = (event) => {
            set(event.matches);
        };
        const mediaQueryList = window.matchMedia(reducedMotionQuery);
        mediaQueryList.addEventListener('change', setReducedMotion);
        return () => {
            mediaQueryList.removeEventListener('change', setReducedMotion);
        };
    }
});