javascript - Webpack with babel-loader not recognizing import keyword

Question

I have this webpack.config.js:

module.exports = {
  entry: './src/admin/client/index.jsx',
  output: {
    filename: './src/admin/client/static/js/app.js'
  },
  loaders: [
    {
      test: /.jsx?$/,
      loader: 'babel',
      exclude: /node_modules/,
      query: {
        optional: ['runtime']
      }
    }
  ],
  resolve: {
    extensions: ['', '.js', '.jsx']
  }
};

...yet I still get this error:

$ webpack -v
Hash: 2a9a40224beb025cb433
Version: webpack 1.10.5
Time: 44ms
   [0] ./src/admin/client/index.jsx 0 bytes [built] [failed]

ERROR in ./src/admin/client/index.jsx
Module parse failed: /project/src/admin/client/index.jsx Line 1: Unexpected reserved word
You may need an appropriate loader to handle this file type.
| import React from 'react';
| import AdminInterface from './components/AdminInterface';

I have:

• Installed webpack globally and locally
• Installed babel-loader, babel-core, and babel-runtime
• Installed babel-loader globally, just in case

Why the hell is webpack seemingly ignoring babel-loader? Or does babel-loader not work with modules?

Update:

It looks like babel handles the input file just fine. When I run:

./node_modules/babel/bin/babel.js ./src/admin/client/index.jsx

...it outputs ES5 as expected. Therefore, it seems to me like somehow webpack isn't properly loading babel-loader.

Answer 1

This looks like a case of operator error. My webpack.config.js structure was not correct. Specifically, I needed to put the loader details inside of a module section:

module.exports = {
  entry: './src/admin/client/index.jsx',
  output: {
    filename: './src/admin/client/static/js/app.js'
  },
  module: {
    loaders: [
      {
        test: /.jsx?$/,
        loader: 'babel',
        exclude: /node_modules/,
        query: {
          optional: ['runtime']
        }
      }
    ],
    resolve: {
      extensions: ['', '.js', '.jsx']
    }
  }
};