My code hit the error
ReferenceError: System is not defined In line
<IndexRoute getComponent={(nextState, cb) => System.import('./containers/Home').then(module => cb(null, module))} /> How do I define System. Is it related to my webpack settings? Here how I put it
var path = require('path'); var webpack = require('webpack'); var ExtractTextPlugin = require('extract-text-webpack-plugin'); var HtmlWebpackPlugin = require('html-webpack-plugin'); var stylus = require('stylus'); module.exports = { debug: true, devtool: 'eval', entry: { "vendor": ["react", "react-router", 'react-dom'], "app": ['webpack-dev-server/client?http://localhost:3000', 'webpack/hot/only-dev-server', './app/App.js'] }, output: { pathinfo: true, path: path.resolve(__dirname, 'public'), filename: '[name].js', publicPath: 'http://localhost:3000/' }, plugins: [ new HtmlWebpackPlugin({ title: 'Welcome!', template: './index_template.ejs', inject: 'body' }), new webpack.HotModuleReplacementPlugin(), new webpack.optimize.UglifyJsPlugin({ output: { comments: false }, compress: { warnings: false } }), new webpack.optimize.CommonsChunkPlugin({ name: 'vendor', minChunks: Infinity, filename: 'vendor.bundle.js' }) ], module: { loaders: [ { test: /\.js$/, exclude: /(node_modules|bower_components)/, loaders: ['react-hot', 'babel'] }, { test: /\.styl$/, exclude: /(node_modules|bower_components)/, // loader: 'style!css?resolve url?sourceMap&modules&importLoaders=1&localIdentName=[name]__[local]__[hash:base64:5]!postcss!stylus-loader' loader: 'style!css?sourceMap&modules&importLoaders=1&localIdentName=[name]__[local]__[hash:base64:5]!postcss!stylus-loader' }, { test: /\.(png|jpg)$/, exclude: /(node_modules|bower_components)/, loader: 'url-loader?name=images/[name].[ext]&limit=8192' }, { test: /\.(ttf|otf|eot)$/, exclude: /(node_modules|bower_components)/, loader: 'url-loader?name=fonts/[name].[ext]&limit=8192' }, { test: /\.css$/, loader: 'style!css-loader?modules&importLoaders=1&localIdentName=[name]__[local]___[hash:base64:5]' }, { test: /\.scss$/, loader: 'style!css-loader?modules&importLoaders=1&localIdentName=[name]__[local]___[hash:base64:5]!postcss!sass?resolve url' }, { test: /\.json$/, loader: 'json-loader' }, { test: /\.js$/, include: path.resolve('node_modules/mapbox-gl-shaders/index.js'), loader: 'transform/cacheable?brfs' } ] }, resolve: { root: path.join(__dirname, '..', 'app'), alias: { 'react': path.join(__dirname, 'node_modules', 'react') }, extensions: ['', '.js', '.jsx', '.json', '.css', '.styl', '.png', '.jpg', '.jpeg', '.gif'] }, stylus: { 'resolve url': true }, postcss: function () { return [autoprefixer]; } }; (Disclaimer: I am new to React-Router and webpack, so this may be obvious to someone with more familiarity)
1 Answers
Answers 1
Your webpack build stack probably doesn't have configured System.import. I suppose that you use webpack 1 and support of System.import will be only in webpack 2.
You can change your existing code to current popular code splitting solution:
<IndexRoute getComponent={(nextState, cb) => { require.ensure([], require => { // default import is not supported in CommonJS standard cb(null, require('./containers/Home').default) }); }} /> Note that you must specify .default if you want to use default import in CommonJS standard.
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