I'm using the following code that works perfectly on es6fiddle:
const o1 = { aa: 11, bb: 22, cc: 33 };
let { aa, ...o2 } = o1;
console.log(o1.aa);
console.log(o2.cc);
aa
o1
o2
o1
$ node src/lru-cache.js
/home/admin/experiments/ct/src/lru-cache.js:2
let { aa, ...o2 } = o1;
^^^
SyntaxError: Unexpected token ...
at Object.exports.runInThisContext (vm.js:76:16)
at Module._compile (module.js:542:28)
at Object.Module._extensions..js (module.js:579:10)
at Module.load (module.js:487:32)
at tryModuleLoad (module.js:446:12)
at Function.Module._load (module.js:438:3)
at Module.runMain (module.js:604:10)
at run (bootstrap_node.js:394:7)
at startup (bootstrap_node.js:149:9)
at bootstrap_node.js:509:3
$ node -v
v6.9.1
The syntax you're using is called object rest properties. It isn't supported by Node.js yet; in fact, the only platform that currently supports it is Babel (see ES Next compatibility table).