brunch-config.js

exports.config = {
  // See http://brunch.io/#documentation for docs.
  files: {
    javascripts: {
      joinTo: {
        'js/app.js': /^(web\/static\/js)/,
        'js/vendor.js': /^(web\/static\/vendor)/,
        'js/bugsnag.js': /^(web\/static\/libraries\/bugsnag\.js)/
      },
      order: {
        before: [
          'web/static/vendor/js/sha256.js',
          'web/static/vendor/js/lib-typedarrays-min.js',
        ]
      },
      pluginHelpers: 'js/vendor.js'

      // To use a separate vendor.js bundle, specify two files path
      // https://github.com/brunch/brunch/blob/stable/docs/config.md#files
      // joinTo: {
      //  'js/app.js': /^(web\/static\/js)/,
      //  'js/vendor.js': /^(web\/static\/vendor)/
      // }
      //
      // To change the order of concatenation of files, explictly mention here
      // https://github.com/brunch/brunch/tree/stable/docs#concatenation
      // order: {
      //   before: [
      //     'web/static/vendor/js/jquery-2.1.1.js',
      //     'web/static/vendor/js/bootstrap.min.js'
      //   ]
      // }
    },
    stylesheets: {
      joinTo: {
        'css/libraries.css': /^(web\/static\/vendor\/css)/,
        'css/app.css': /^(web\/static\/css)/
      }
    }
  },

  // Phoenix paths configuration
  paths: {
    // Which directories to watch
    watched: ["web/static/js", "web/static/css", "web/static/vendor", "web/static/libraries", "test/static"],

    // Where to compile files to
    public: "priv/static"
  },

  modules: {
    nameCleaner: function(path) {
      return path.replace(/^web\/static\/js\//, '');
    }
  },

  overrides: {
    production: {
      sourceMaps: true
    }
  },

  // Configure your plugins
  plugins: {
    react: {
      transformOptions: {
        harmony: true,
        sourceMap: false,
        stripTypes: false
      }
    },  
    // if you use babel to transform jsx, transformOptions would be passed though to `babel.transform()` 
    // See: http://babeljs.io/docs/usage/options/ 
    babel: {
      // Do not use ES6 compiler in vendor code
      ignore: [/^(web\/static\/vendor)/, /(react|reflux|react-router)\.js$/],
      pattern: /\.(js|jsx)$/,
    }
  }
};