From e4970e43baf7542d7907e9144cdbee071b8aef5e Mon Sep 17 00:00:00 2001
From: Ilia Mashkov <hikkikomori7@gmail.com>
Date: Thu, 22 Jan 2026 15:33:38 +0300
Subject: [PATCH] chore: switch to use of svelte native prefersReducedMotion
 media

---
 .../ui/FontApplicator/FontApplicator.svelte   |  9 +++---
 src/shared/lib/accessibility/motion.svelte.ts | 32 -------------------
 src/shared/lib/index.ts                       |  1 -
 .../ui/CheckboxFilter/CheckboxFilter.svelte   |  4 +--
 4 files changed, 7 insertions(+), 39 deletions(-)
 delete mode 100644 src/shared/lib/accessibility/motion.svelte.ts

diff --git a/src/entities/Font/ui/FontApplicator/FontApplicator.svelte b/src/entities/Font/ui/FontApplicator/FontApplicator.svelte
index f724e94..b5c8e5b 100644
--- a/src/entities/Font/ui/FontApplicator/FontApplicator.svelte
+++ b/src/entities/Font/ui/FontApplicator/FontApplicator.svelte
@@ -6,9 +6,9 @@
     - Adds smooth transition when font appears
 -->
 <script lang="ts">
-import { motion } from '$shared/lib';
 import { cn } from '$shared/shadcn/utils/shadcn-utils';
 import type { Snippet } from 'svelte';
+import { prefersReducedMotion } from 'svelte/motion';
 import { appliedFontsManager } from '../../model';
 
 interface Props {
@@ -59,7 +59,7 @@ const status = $derived(appliedFontsManager.getFontStatus(id, weight, false));
 const shouldReveal = $derived(hasEnteredViewport && (status === 'loaded' || status === 'error'));
 
 const transitionClasses = $derived(
-    motion.reduced
+    prefersReducedMotion.current
         ? 'transition-none' // Disable CSS transitions if motion is reduced
         : 'transition-all duration-700 ease-[cubic-bezier(0.22,1,0.36,1)]',
 );
@@ -71,8 +71,9 @@ const transitionClasses = $derived(
     class={cn(
         transitionClasses,
         // If reduced motion is on, we skip the transform/blur entirely
-        !shouldReveal && !motion.reduced && 'opacity-0 translate-y-8 scale-[0.98] blur-sm',
-        !shouldReveal && motion.reduced && 'opacity-0', // Still hide until font is ready, but no movement
+        !shouldReveal && !prefersReducedMotion.current
+            && 'opacity-0 translate-y-8 scale-[0.98] blur-sm',
+        !shouldReveal && prefersReducedMotion.current && 'opacity-0', // Still hide until font is ready, but no movement
         shouldReveal && 'opacity-100 translate-y-0 scale-100 blur-0',
         className,
     )}
diff --git a/src/shared/lib/accessibility/motion.svelte.ts b/src/shared/lib/accessibility/motion.svelte.ts
deleted file mode 100644
index 4dceb77..0000000
--- a/src/shared/lib/accessibility/motion.svelte.ts
+++ /dev/null
@@ -1,32 +0,0 @@
-// Check if we are in a browser environment
-const isBrowser = typeof window !== 'undefined';
-
-// A class to manage motion preference and provide a single instance for use everywhere
-class MotionPreference {
-    // Reactive state
-    #reduced = $state(false);
-
-    constructor() {
-        if (isBrowser) {
-            const mediaQuery = window.matchMedia('(prefers-reduced-motion: reduce)');
-
-            // Set initial value immediately
-            this.#reduced = mediaQuery.matches;
-
-            // Simple listener that updates the reactive state
-            const handleChange = (e: MediaQueryListEvent) => {
-                this.#reduced = e.matches;
-            };
-
-            mediaQuery.addEventListener('change', handleChange);
-        }
-    }
-
-    // Getter allows us to use 'motion.reduced' reactively in components
-    get reduced() {
-        return this.#reduced;
-    }
-}
-
-// Export a single instance to be used everywhere
-export const motion = new MotionPreference();
diff --git a/src/shared/lib/index.ts b/src/shared/lib/index.ts
index 35dbe09..a431e86 100644
--- a/src/shared/lib/index.ts
+++ b/src/shared/lib/index.ts
@@ -19,5 +19,4 @@ export {
     type VirtualizerOptions,
 } from './helpers';
 
-export { motion } from './accessibility/motion.svelte';
 export { splitArray } from './utils';
diff --git a/src/shared/ui/CheckboxFilter/CheckboxFilter.svelte b/src/shared/ui/CheckboxFilter/CheckboxFilter.svelte
index 996dc7b..a30513c 100644
--- a/src/shared/ui/CheckboxFilter/CheckboxFilter.svelte
+++ b/src/shared/ui/CheckboxFilter/CheckboxFilter.svelte
@@ -9,7 +9,6 @@
 -->
 <script lang="ts">
 import type { Filter } from '$shared/lib';
-import { motion } from '$shared/lib';
 import { Badge } from '$shared/shadcn/ui/badge';
 import { buttonVariants } from '$shared/shadcn/ui/button';
 import { Checkbox } from '$shared/shadcn/ui/checkbox';
@@ -20,6 +19,7 @@ import {
 import { Label } from '$shared/shadcn/ui/label';
 import ChevronDownIcon from '@lucide/svelte/icons/chevron-down';
 import { cubicOut } from 'svelte/easing';
+import { prefersReducedMotion } from 'svelte/motion';
 import { slide } from 'svelte/transition';
 
 interface PropertyFilterProps {
@@ -37,7 +37,7 @@ let isOpen = $state(true);
 // Animation config respects user preferences - zero duration if reduced motion enabled
 // Local modifier prevents animation on initial render, only animates user interactions
 const slideConfig = $derived({
-    duration: motion.reduced ? 0 : 250,
+    duration: prefersReducedMotion.current ? 0 : 250,
     easing: cubicOut,
 });