Create-react-app: Can't `npm start` new app, SyntaxError: Unexpected token => on a fresh install

Created on 22 Jul 2016 · 10Comments · Source: facebook/create-react-app

Edit from maintainers: the project requires Node >= 4.0.
We’ll fix the CLI to report an error in earlier versions.

I can't get the local server started. My steps to the error:

npm install -g create-react-app
create-react-app hello
No errors creating the app
cd hello
npm start

> [email protected] start /Users/olivier/Sites/sandbox/hello
> react-scripts start

/Users/olivier/Sites/sandbox/hello/node_modules/react-scripts/scripts/start.js:23
var isSmokeTest = process.argv.some(arg =>
                                        ^^
SyntaxError: Unexpected token =>
    at exports.runInThisContext (vm.js:73:16)
    at Module._compile (module.js:443:25)
    at Object.Module._extensions..js (module.js:478:10)
    at Module.load (module.js:355:32)
    at Function.Module._load (module.js:310:12)
    at Function.Module.runMain (module.js:501:10)
    at startup (node.js:129:16)
    at node.js:814:3

Using npm v3.10.5 on OS X 10.11.6

bug

Source

olivier-w

Most helpful comment

@olivier-w This requires node >= 4 in order to run since it was uses arrow functions etc...

conorhastings on 22 Jul 2016

👍2

All 10 comments

@olivier-w what node version are you using?

conorhastings on 22 Jul 2016

@conorhastings v0.12.7. Is there a recommended npm/node version that I should be using?

olivier-w on 22 Jul 2016

@olivier-w This requires node >= 4 in order to run since it was uses arrow functions etc...

conorhastings on 22 Jul 2016

👍2

@conorhastings Working with node v4.4.7 installed. Thank you!

olivier-w on 22 Jul 2016

👍1

Hmm wasn't CLI supposed to check for the Node version before installing?
Let's reopen for now to investigate.

gaearon on 22 Jul 2016

@gaearon looks like it isn't called anywhere https://github.com/facebookincubator/create-react-app/blob/master/global-cli/index.js#L139-Lundefined

edit: @keyanzhang mentioned that in https://github.com/facebookincubator/create-react-app/pull/68#issue-166949749

hzoo on 22 Jul 2016

I also maybe missing something but i don't see an engines if i npm install react-scripts

conorhastings on 22 Jul 2016

Ah, good points. Want to fix this? 😄

gaearon on 22 Jul 2016

I think I just hit this bug. I know this was integrated but has the template been updated? Hate to ask, but I'm just getting my started with this (Coming from Ruby/HTML/SCSS)

Currently on Node 6.7.0 and npm 3.10.7.