reactjs - script - ¿Qué pasa con mi configuración de Webpack?

webpack loaders

Question

Empecé a usar Webpack para un proyecto de estudiante, pero estoy atascado configurando Webpack para incluir React y Babel. Aquí están mis paquetes de nodos:

+-- [email protected]
+-- [email protected]
+-- [email protected]
+-- [email protected]
+-- [email protected]
+-- [email protected]
`-- [email protected]

... Y mi archivo de configuración de webpack:

module.exports = {
entry: [''babel-polyfill'', ''./src/index.jsx''],
output: {
path: ''./build'',
filename: ''app.bundle.js''
},
module: {
loaders: [
{
test: //.jsx?$/,
exclude: /node_modules/,
loader: ''babel-loader'',
query: {
presets: [''es2015'', ''react'']
}
}
]
}
};

Pero el comando webpack me muestra este error:

ERROR in ./src/index.jsx
Module build failed: ReferenceError: [BABEL] C:/wamp/www/tripfighter/src/index.jsx: Unknown option: C:/wamp/www/tripfighter/node_modules/react/react.js.Children. Check out http://babeljs.io/docs/usage/options/ for more information about options.
A common cause of this error is the presence of a configuration options object without the corresponding preset name. Example:
Invalid:
`{ presets: [{option: value}] }`
Valid:
`{ presets: [''pluginName'', {option: value}] }`
For more detailed information on preset configuration, please see http://babeljs.io/docs/plugins/#pluginpresets-options. (While processing preset: "C://wamp//www//tripfighter//node_modules//react//react.js")
at Logger.error (C:/wamp/www/tripfighter/node_modules/babel-core/lib/transformation/file/logger.js:41:11)
at OptionManager.mergeOptions (C:/wamp/www/tripfighter/node_modules/babel-core/lib/transformation/file/options/option-manager.js:221:20)
at C:/wamp/www/tripfighter/node_modules/babel-core/lib/transformation/file/options/option-manager.js:260:14
at C:/wamp/www/tripfighter/node_modules/babel-core/lib/transformation/file/options/option-manager.js:329:22
at Array.map (native)
at OptionManager.resolvePresets (C:/wamp/www/tripfighter/node_modules/babel-core/lib/transformation/file/options/option-manager.js:270:20)
at OptionManager.mergePresets (C:/wamp/www/tripfighter/node_modules/babel-core/lib/transformation/file/options/option-manager.js:259:10)
at OptionManager.mergeOptions (C:/wamp/www/tripfighter/node_modules/babel-core/lib/transformation/file/options/option-manager.js:244:14)
at OptionManager.init (C:/wamp/www/tripfighter/node_modules/babel-core/lib/transformation/file/options/option-manager.js:374:12)
at File.initOptions (C:/wamp/www/tripfighter/node_modules/babel-core/lib/transformation/file/index.js:216:65)
at new File (C:/wamp/www/tripfighter/node_modules/babel-core/lib/transformation/file/index.js:139:24)
at Pipeline.transform (C:/wamp/www/tripfighter/node_modules/babel-core/lib/transformation/pipeline.js:46:16)
at transpile (C:/wamp/www/tripfighter/node_modules/babel-loader/index.js:38:20)
at Object.module.exports (C:/wamp/www/tripfighter/node_modules/babel-loader/index.js:131:12)
@ multi main

(Hay mi archivo de muestra index.jsx)

import ''babel-polyfill'';
import React from ''react'';
import ReactDOM from ''react-dom'';
ReactDOM.render(
<h1>Hello, world!</h1>,
document.getElementById(''root'')
);
import cats from ''./cats.js'';
console.log(cats);

Así que el problema parece provenir de mi webpack.config.js, pero no sé por qué, a pesar de haber buscado entre muchos ejemplos en la web. Me puedes ayudar ? Gracias !

Answer 1

Tu configuración es

presets: [''es2015'', ''react'']

pero el único preajuste que has instalado es

+-- [email protected]

Entonces tu respuesta es

npm install --save-dev babel-preset-react

Editar:

FYI, Babel 7 (cuando se lanza) da un mensaje de error mucho más claro sobre esto, por lo que hará la vida más fácil para estos casos.