| 1 | /** |
| 2 | * Copyright (c) Meta Platforms, Inc. and affiliates. |
| 3 | * |
| 4 | * This source code is licensed under the MIT license found in the |
| 5 | * LICENSE file in the root directory of this source tree. |
| 6 | */ |
| 7 | |
| 8 | let prefersReducedMotionValue = false; |
| 9 | |
| 10 | try { |
| 11 | const prefersReducedMotionQuery = window.matchMedia('(prefers-reduced-motion: reduce)'); |
| 12 | prefersReducedMotionQuery.addEventListener('change', () => { |
| 13 | prefersReducedMotionValue = prefersReducedMotionQuery.matches; |
| 14 | }); |
| 15 | prefersReducedMotionValue = prefersReducedMotionQuery.matches; |
| 16 | } catch (_e) { |
| 17 | // testing-library does not define "window.matchMedia". |
| 18 | } |
| 19 | |
| 20 | /** Returns `true` if the user wants reduced animation. */ |
| 21 | export function prefersReducedMotion() { |
| 22 | return prefersReducedMotionValue; |
| 23 | } |
| 24 | |