const availablePrefixs = ['moz', 'ms', 'webkit']; function requestAnimationFramePolyfill() { let lastTime = 0; return function(callback) { const currTime = new Date().getTime(); const timeToCall = Math.max(0, 16 - (currTime - lastTime)); const id = window.setTimeout(function() { callback(currTime + timeToCall); }, timeToCall); lastTime = currTime + timeToCall; return id; }; } export default function getRequestAnimationFrame() { if (typeof window === 'undefined') { return () => {}; } if (window.requestAnimationFrame) { // https://github.com/vuejs/vue/issues/4465 return window.requestAnimationFrame.bind(window); } const prefix = availablePrefixs.filter(key => `${key}RequestAnimationFrame` in window)[0]; return prefix ? window[`${prefix}RequestAnimationFrame`] : requestAnimationFramePolyfill(); } export function cancelRequestAnimationFrame(id) { if (typeof window === 'undefined') { return null; } if (window.cancelAnimationFrame) { return window.cancelAnimationFrame(id); } const prefix = availablePrefixs.filter(key => `${key}CancelAnimationFrame` in window || `${key}CancelRequestAnimationFrame` in window, )[0]; return prefix ? (window[`${prefix}CancelAnimationFrame`] || window[`${prefix}CancelRequestAnimationFrame`]).call(this, id) : clearTimeout(id); }