node.js - React-native npm start启动报错！

我是跟着RN官网的教程来玩的：
https://facebook.github.io/react-native/docs/getting-started.html#content
求解惑

启动时在终端看到的错误信息如下

/Users/yiwang/Documents/react_native/AwesomeProject/node_modules/react-native/local-cli/cli.js:56
const setupEnvScript = /^win/.test(process.platform)
^^^^^
SyntaxError: Use of const in strict mode.

at exports.runInThisContext (vm.js:73:16)
at Module._compile (module.js:443:25)
at Module._extensions..js (module.js:478:10)
at Object.require.extensions.(anonymous function) [as .js] (/Users/yiwang/Documents/react_native/AwesomeProject/node_modules/react-native/node_modules/babel-core/lib/api/register/node.js:214:7)
at Module.load (module.js:355:32)
at Function.Module._load (module.js:310:12)
at Module.require (module.js:365:17)
at require (module.js:384:17)
at Object. (/Users/yiwang/Documents/react_native/AwesomeProject/node_modules/react-native/cli.js:15:18)