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							- import env from '../core/env';
 
- type RequestAnimationFrameType = typeof window.requestAnimationFrame
 
- let requestAnimationFrame: RequestAnimationFrameType;
 
- requestAnimationFrame = (
 
- 	env.hasGlobalWindow
 
- 		&& (
 
- 			(window.requestAnimationFrame && window.requestAnimationFrame.bind(window))
 
- 			// https://github.com/ecomfe/zrender/issues/189#issuecomment-224919809
 
- 			|| ((window as any).msRequestAnimationFrame && (window as any).msRequestAnimationFrame.bind(window))
 
- 			|| (window as any).mozRequestAnimationFrame
 
- 			// @ts-ignore
 
- 			|| window.webkitRequestAnimationFrame
 
- 		)
 
- ) || function (func: Parameters<RequestAnimationFrameType>[0]): number {
 
- 	return setTimeout(func, 16) as any;
 
- };
 
- export default requestAnimationFrame;
 
 
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