Number.MAX_SAFE_INTEGER||(Number.MAX_SAFE_INTEGER=Math.pow(2,53)-1);Array.prototype.findIndex||Object.defineProperty(Array.prototype,"findIndex",{value:function(n){var i,r,u,t,f;if(this==null)throw new TypeError('"this" is null or not defined');if(i=Object(this),r=i.length>>>0,typeof n!="function")throw new TypeError("predicate must be a function");for(u=arguments[1],t=0;t<r;){if(f=i[t],n.call(u,f,t,i))return t;t++}return-1},configurable:!0,writable:!0});Array.prototype.find||Object.defineProperty(Array.prototype,"find",{value:function(n){var i,u,f,t,r;if(this==null)throw new TypeError('"this" is null or not defined');if(i=Object(this),u=i.length>>>0,typeof n!="function")throw new TypeError("predicate must be a function");for(f=arguments[1],t=0;t<u;){if(r=i[t],n.call(f,r,t,i))return r;t++}return undefined},configurable:!0,writable:!0})