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src/pageVisibilityUtils.js for react-page-visibility-example
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| export const pageVisibilityApi = () => { | |
| let hidden, visibilityChange; | |
| if (typeof document.hidden !== "undefined") { | |
| // Opera 12.10 and Firefox 18 and later support | |
| hidden = "hidden"; | |
| visibilityChange = "visibilitychange"; | |
| } else if (typeof document.msHidden !== "undefined") { | |
| hidden = "msHidden"; | |
| visibilityChange = "msvisibilitychange"; | |
| } else if (typeof document.webkitHidden !== "undefined") { | |
| hidden = "webkitHidden"; | |
| visibilityChange = "webkitvisibilitychange"; | |
| } | |
| return { hidden, visibilityChange }; | |
| }; |
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