学习n-blog教程遇到的mongolass报错问题

/Users/yuhuayang/workspace/node/learn/N-blog/node_modules/mongolass/lib/query.js:54 this[plugin.name] = (...args) => { ^^^

SyntaxError: Unexpected token ... at exports.runInThisContext (vm.js:53:16) at Module._compile (module.js:387:25) at Object.Module._extensions..js (module.js:422:10) at Module.load (module.js:357:32) at Function.Module._load (module.js:314:12) at Module.require (module.js:367:17) at require (internal/module.js:16:19) at Object. (/Users/yuhuayang/workspace/node/learn/N-blog/node_modules/mongolass/lib/model.js:7:15)