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var onWindowResize = function (callback) {
    (function (cb) {
        var resizeTimeout;
        var resizeThrottler = function () {
            if (!resizeTimeout) {
                resizeTimeout = setTimeout(function () {
                    resizeTimeout = null;
                    cb();
                }, 500);
            }
        };
  
        window.addEventListener("resize", resizeThrottler, false);
    })(callback);
};