speak speak - 5 months ago 328
Javascript Question

Error: Missing class properties transform

Error: Missing class properties transform


Test.js
:

export class Test extends Component {
constructor (props) {
super(props)
}

static contextTypes = {
router: React.PropTypes.object.isRequired
}


.babelrc
:

{
"presets": ["es2015", "react", "stage-0"],
"plugins": ["transform-class-properties"]
}


package.json
:

"babel-core": "^6.5.1",
"babel-eslint": "^4.1.8",
"babel-loader": "^6.2.2",
"babel-plugin-react-transform": "^2.0.0",
"babel-plugin-transform-class-properties": "^6.5.2",
"babel-preset-es2015": "^6.5.0",
"babel-preset-react": "^6.5.0",
"babel-preset-stage-0": "^6.5.0",
"babel-register": "^6.5.2",


I have scoured the web and all fixes revolve around: Upgrading to babel6, switching the order of "stage-0" to be after "es2015". All of which I have done.

Answer

OK, finally figured this out, in my webpack.config.js I had:

module: {
    loaders: [
      {
        test: /\.js?$/,
        exclude: /(node_modules|bower_components)/,
        loaders: [
          'react-hot',
          'babel?presets[]=stage-0,presets[]=react,presets[]=es2015'
        ]
      }
    ]
  }

'babel?presets[]=stage-0,presets[]=react,presets[]=es2015'

Has to be treated in the same way as .babelrc, switched stage-0 to be after es2015 and it compiles perfectly.