react-reveal/src/lib/debounce.js

Really simple way to add reveal on scroll animation to your React app.

// Returns a function, that, as long as it continues to be invoked, will not
// be triggered. The function will be called after it stops being called for
// N milliseconds. If `immediate` is passed, trigger the function on the
// leading edge, instead of the trailing.
export default function debounce(func, wait, immediate) {
	var timeout;
	return function() {
		var context = this, args = arguments;
		var later = function() {
			timeout = null;
			if (!immediate) func.apply(context, args);
		};
		var callNow = immediate && !timeout;
		clearTimeout(timeout);
		timeout = setTimeout(later, wait);
		if (callNow) func.apply(context, args);
	};
};

// Copyright (c) 2009-2017 Jeremy Ashkenas, DocumentCloud and Investigative
// Reporters & Editors
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// copies of the Software, and to permit persons to whom the
// Software is furnished to do so, subject to the following
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// 
// The above copyright notice and this permission notice shall be
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