不支持koa？

[xsbchen]

SyntaxError: Unexpected token *
    at exports.runInThisContext (vm.js:75:16)
    at Module._compile (module.js:445:25)
    at Object.Module._extensions..js (module.js:480:10)
    at Module.load (module.js:357:32)
    at Function.Module._load (module.js:312:12)
    at Module.require (module.js:367:17)
    at require (module.js:386:17)

[Jackson Tian]

加 --harmony