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/*
* SPDX-FileCopyrightText: syuilo and misskey-project
* SPDX-License-Identifier: AGPL-3.0-only
*/
import { onMounted, onUnmounted, ref } from 'vue';
import type { Ref } from 'vue';
export function useDocumentVisibility(): Ref<DocumentVisibilityState> {
const visibility = ref(document.visibilityState);
const onChange = (): void => {
visibility.value = document.visibilityState;
};
onMounted(() => {
document.addEventListener('visibilitychange', onChange);
});
onUnmounted(() => {
document.removeEventListener('visibilitychange', onChange);
});
return visibility;
}
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