.babelrc changes are not picked up unless you clear packager cache

[gaearon]

I don't know enough about Packager but I just found out the hard way that adding .babelrc and later changing it has zero effect unless you also delete some temp directories.

This comment explains what to do: facebook/react-native#1924 (comment)

I'm not sure whether we should

• do this from code
• wait for RN to do this
• warn about it in README

but I for sure know I spent three hours on this.

:-)

[alejomendoza]

this is such a pain in the ass issue!

[gaearon]

For now, just don't use .babelrc.
You can provide Babel configuration in Webpack config, like in the examples.

[elliottsj]

I'll add a note in the README this evening

[elliottsj]

Added note: 3ad235c

Let's keep this open until it's truly fixed in RN 0.12

[adaojunior]

Im running RN 0.12, how do I clear the cache ?
I tried npm start reset-cache and sh ./node_modules/react-native/packager/packager.sh reset-cache and still nothing.
I'm on windows.

[elliottsj]

@adaojunior Try ./node_modules/react-native/packager/packager.sh start --resetCache

[adaojunior]

@elliottsj I think it may be working because it is taking longer the first time I start the packager and it transform it after, but I'm still getting a Unexpected Error, I'm trying to use es6.modules.

export default Root extends React.Component{
  render(){
    return (
      <Text>Hello World!</Text>
    );
  }
}

but I'm getting an error in the export line.

[gaearon]

export default Root

Seems like you're missing class: export default class Root.

[adaojunior]

@gaearon yeah thank you, it's working now :D
that is just 40 minutes of my life that I wont get back lol

[oliversisson]

"Please start using --reset-cache instead. We'll deprecate this argument soon."