WordPress/wp-includes/js/heartbeat.min.js

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w.heartbeatSettings&&(e=w.heartbeatSettings,!r.url&&e.ajaxurl&&(r.url=e.ajaxurl),e.interval&&(r.mainInterval=e.interval,r.mainInterval<15?r.mainInterval=15:120<r.mainInterval&&(r.mainInterval=120)),e.minimalInterval&&(e.minimalInterval=parseInt(e.minimalInterval,10),r.minimalInterval=0<e.minimalInterval&&e.minimalInterval<=600?1e3*e.minimalInterval:0),r.minimalInterval&&r.mainInterval<r.minimalInterval&&(r.mainInterval=r.minimalInterval),r.screenId||(r.screenId=e.screenId||"front"),"disable"===e.suspension&&(r.suspendEnabled=!1)),r.mainInterval=1e3*r.mainInterval,r.originalInterval=r.mainInterval,void 0!==document.hidden?(n="hidden",a="visibilitychange",t="visibilityState"):void 0!==document.msHidden?(n="msHidden",a="msvisibilitychange",t="msVisibilityState"):void 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