npm start命令我遇到了语法错误：在严格模式下使用const

Question

• when I run npm start command I am getting the below error
• I followed the below steps in the link https://github.com/kriasoft/react-starter-kit/blob/master/docs/getting-started.md
• can you tell me how to fix it
• providing error below

xxx-nameKumar--MacBook-Pro:MyApp xxx-name$ npm start

> @ start /Users/xxx-name/Desktop/FrontEnd/MyApp
> babel-node tools/run start

/Users/xxx-name/Desktop/FrontEnd/MyApp/tools/run.js:20
  const task = typeof fn.default === 'undefined' ? fn : fn.default;
  ^^^^^
SyntaxError: Use of const in strict mode.
    at exports.runInThisContext (vm.js:73:16)
    at Module._compile (module.js:443:25)
    at loader (/Users/xxx-name/Desktop/FrontEnd/MyApp/node_modules/babel-cli/node_modules/babel-register/lib/node.js:126:5)
    at Object.require.extensions.(anonymous function) [as .js] (/Users/xxx-name/Desktop/FrontEnd/MyApp/node_modules/babel-cli/node_modules/babel-register/lib/node.js:136:7)
    at Module.load (module.js:355:32)
    at Function.Module._load (module.js:310:12)
    at Function.Module.runMain (module.js:501:10)
    at /Users/xxx-name/Desktop/FrontEnd/MyApp/node_modules/babel-cli/lib/_babel-node.js:161:27
    at Object.<anonymous> (/Users/xxx-name/Desktop/FrontEnd/MyApp/node_modules/babel-cli/lib/_babel-node.js:162:7)
    at Module._compile (module.js:460:26)

npm ERR! Darwin 14.5.0
npm ERR! argv "node" "/usr/local/bin/npm" "start"
npm ERR! node v0.12.0
npm ERR! npm  v2.5.1
npm ERR! code ELIFECYCLE
npm ERR! @ start: `babel-node tools/run start`
npm ERR! Exit status 1
npm ERR! 
npm ERR! Failed at the @ start script 'babel-node tools/run start'.
npm ERR! This is most likely a problem with the  package,
npm ERR! not with npm itself.
npm ERR! Tell the author that this fails on your system:
npm ERR!     babel-node tools/run start
npm ERR! You can get their info via:
npm ERR!     npm owner ls 
npm ERR! There is likely additional logging output above.

npm ERR! Please include the following file with any support request:
npm ERR!     /Users/xxx-name/Desktop/FrontEnd/MyApp/npm-debug.log

Answer 1

You have syntax error:

SyntaxError: Use of const in strict mode.

Do you have 'use strict' in your code?

What version of node do you have?

The const and let are part of ES6 and are not enabled by default in Node.js 0.10 or 0.12.

Answer 2

Update nodejs. Const is a new feature. The version you have (0.12.0) is outdated. The link says you need 5.0 or newer. Download and install 5.9.1 (not 4.4.1) form https://nodejs.org/en/ . Then try again.

Answer 3

You can try to update your npm by typing

sudo Npm install -g npm