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if (window.ResizeObserver &&
(!window.PerformanceObserver || !PerformanceObserver.supportedEntryTypes || PerformanceObserver.supportedEntryTypes.indexOf('paint') === -1)) {
new ResizeObserver(function (entries, observer) {
entries.some(function (entry) {
var contentRect = entry.contentRect;
if (contentRect.width > 0 && contentRect.height > 0) {
requestAnimationFrame(function (now) {
window.wixFirstPaint = now;
dispatchEvent(new CustomEvent('wixFirstPaint'));
});
observer.disconnect();
return true;
}
});
}).observe(document.body);
}
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