Plugin 0 specified in babel-preset-es2015 provided an invalid property of _c - babeljs

Question

Getting above error with below configuration, commenting passPerPreset removes the error however. Is there any configuration missing ?
.babelrc :
{
"passPerPreset": true,
"presets": [{
"plugins": [
"./build/babelRelayPlugin",
"transform-runtime",
"transform-es2015-classes"
]
}, "es2015", "stage-0", "react"],
"env": {
"development": {
"presets": ["react-hmre"]
}
}
}
package.json :
"babel-cli": "^6.5.1",
"babel-core": "^6.5.2",
"babel-eslint": "^4.1.8",
"babel-loader": "^6.2.2",
"babel-plugin-react-transform": "^2.0.0",
"babel-plugin-transform-es2015-classes": "^6.5.2",
"babel-plugin-transform-runtime": "^6.5.2",
"babel-polyfill": "^6.5.0",
"babel-preset-es2015": "^6.5.0",
"babel-preset-react": "^6.5.0",
"babel-preset-react-hmre": "^1.1.0",
"babel-preset-stage-0": "^6.5.0",
"babel-relay-plugin": "^0.7.0",
"babel-runtime": "^6.5.0",
Webpack :
module: {
loaders: [
{
loader: "babel-loader",
include: [
path.resolve(__dirname, "app"),
],
test: /\.jsx?$/,
query: {
plugins: ['transform-runtime'],
presets: ['react', 'es2015', 'stage-0'],
}
},
]
},
Error : babel-node start
Module build failed: Error: Plugin 0 specified in "/Users/my/demo/node_modules/babel-preset-es2015/index.js" provided an invalid property of "_c"

Answer 1

What worked for me was:
rm -rf node_modules
npm prune
npm cache clear
npm cache clean
npm i

Answer 2

Upgrading babel-core and babel-loader fixed this for me.
npm install --save babel-core#latest babel-loader#latest

Answer 3

I think that there might be contention between what you've specified in .babelrc and what you've configured in babel-loader.
Can you try to remove the query from your Webpack config?

Answer 4

I had the same problem, but removing and rebuilding node_modules as Alex suggested didn't help in my case.
It turned out that there was some version mismatch with may packages. When I deleted all the dependencies and devDependencies from package.json and added them again by npm i -S or npm i -D respectively, everything started to work again.

Answer 5

Clearing my node_modules etc didn't work. However, commenting-out passPerPreset did the trick. TBH I'm not really sure what that option does, but most of the google hits on it are bug reports, so I'm fine so long as it works.
// babelrc
{
//"passPerPreset": true,
"presets": [
"stage-0",
"react-app"
],
"plugins": [
"transform-runtime",
"syntax-async-functions",
"transform-decorators-legacy",
"transform-class-properties",
"react-relay"
]
}

Answer 6

Updating my npm version solved this problem.