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page_visibility.js
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28 lines (27 loc) · 912 Bytes
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/*
* Copyright 2015 The Closure Compiler Authors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/**
* @fileoverview Externs for Page Visibility.
*
* @see http://www.w3.org/TR/page-visibility
* @externs
*/
/**
* Set of possible values: 'hidden', 'visible', 'prerender', 'unloaded'.
* @typedef {string}
* @see http://www.w3.org/TR/page-visibility/#VisibilityState
*/
var VisibilityState;