Object.assign||Object.defineProperty(Object,"assign",{enumerable:!1,configurable:!0,writable:!0,value:function(n){"use strict";var f,i,t,e,r,s,u,o;if(n===undefined||n===null)throw new TypeError("Cannot convert first argument to object");for(f=Object(n),i=1;i<arguments.length;i++)if(t=arguments[i],t!==undefined&&t!==null)for(t=Object(t),e=Object.keys(Object(t)),r=0,s=e.length;r<s;r++)u=e[r],o=Object.getOwnPropertyDescriptor(t,u),o!==undefined&&o.enumerable&&(f[u]=t[u]);return f}})