tab-manager
Let's assume that there is HTML page including some special logic, that logics will trigger by some event listener. Users maybe open multiple tabs all including this page. Once the event is emitted, all tabs will trigger that event, that's may caused some performance issue or unexpect error. So we would like to mark one tab as active
tab, once we recived the event, only this tab will trigger to execution the code logic.
We definition active tab
to the currently or last tab which users browsing or focusing.
Here using SharedWorker to implement this logic.