JS Configs

.eslintrc

{
  "extends": "eslint:recommended",
  "rules": {
    "block-scoped-var": ["warn", "always"],
    "class-methods-use-this": ["warn", "always"],
    "default-case": ["warn", "always"],
    "eqeqeq": ["warn", "always"],
    "no-alert": ["error", "always"],
    "no-empty-function": ["error", "always"],
    "no-eq-null": ["error", "always"],
    "no-implicit-globals": ["error", "always"],
    "no-magic-numbers": ["error", "always"],
    "camelcase": ["error", "always"],
    "comma-dangle": ["error", "always-multiline"],
    "comma-spacing": ["error", {
      "before": false,
      "after": true
    }],
    "no-multiple-empty-lines": ["error", {
      "max": 2
    }]
  },
  "no-multi-spaces": ["error", {
    "exceptions": {
      "VariableDeclarator": true,
      "ImportDeclaration": true,
      "BinaryExpression": true
    }
  }]
}

webpack.config.js

// Webpack ver ^1.13.3
const webpack = require('webpack');
const path = require('path');

module.exports = {
  entry: path.join(__dirname, 'src', 'app-client.js'),
  output: {
    path: path.join(__dirname, 'src', 'static', 'js'),
    filename: 'bundle.js'
  },
  module: {
    loaders: [{
      test: path.join(__dirname, 'src'),
      loader: ['babel-loader'],
      query: {
        cacheDirectory: 'babel_cache',
        presets: ['react', 'es2015']
      }
    }]
  },
  plugins: [
    new webpack.DefinePlugin({
      'process.env.NODE_ENV': JSON.stringify(process.env.NODE_ENV)
    }),
    new webpack.optimize.DedupePlugin(),
    new webpack.optimize.OccurrenceOrderPlugin(),
    new webpack.optimize.UglifyJsPlugin({
      compress: {
        warnings: false
      },
      mangle: true,
      sourcemap: false,
      beautify: false,
      dead_code: true
    })
  ]
};