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					35 lines
				
				627 B
			
		
		
			
		
	
	
					35 lines
				
				627 B
			| 
											3 years ago
										 | var rafSchd = function rafSchd(fn) { | ||
|  |   var lastArgs = []; | ||
|  |   var frameId = null; | ||
|  | 
 | ||
|  |   var wrapperFn = function wrapperFn() { | ||
|  |     for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) { | ||
|  |       args[_key] = arguments[_key]; | ||
|  |     } | ||
|  | 
 | ||
|  |     lastArgs = args; | ||
|  | 
 | ||
|  |     if (frameId) { | ||
|  |       return; | ||
|  |     } | ||
|  | 
 | ||
|  |     frameId = requestAnimationFrame(function () { | ||
|  |       frameId = null; | ||
|  |       fn.apply(void 0, lastArgs); | ||
|  |     }); | ||
|  |   }; | ||
|  | 
 | ||
|  |   wrapperFn.cancel = function () { | ||
|  |     if (!frameId) { | ||
|  |       return; | ||
|  |     } | ||
|  | 
 | ||
|  |     cancelAnimationFrame(frameId); | ||
|  |     frameId = null; | ||
|  |   }; | ||
|  | 
 | ||
|  |   return wrapperFn; | ||
|  | }; | ||
|  | 
 | ||
|  | export default rafSchd; |