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const path = require('path');
const webpack = require('webpack');
const webpackDevMiddleware = require('webpack-dev-middleware');
const webpackHotMiddleware = require('webpack-hot-middleware');
function createWebpackMiddleware(compiler, publicPath) {
return webpackDevMiddleware(compiler, {
logLevel: 'warn',
publicPath,
silent: true,
stats: 'errors-only',
});
}
module.exports = function addDevMiddlewares(app, webpackConfig) {
const compiler = webpack(webpackConfig);
const middleware = createWebpackMiddleware(
compiler,
webpackConfig.output.publicPath,
);
app.use(middleware);
app.use(webpackHotMiddleware(compiler));
// Since webpackDevMiddleware uses memory-fs internally to store build
// artifacts, we use it instead
const fs = middleware.fileSystem;
app.get('*', (req, res) => {
fs.readFile(path.join(compiler.outputPath, 'index.html'), (err, file) => {
if (err) {
res.sendStatus(404);
} else {
res.send(file.toString());
}
});
});
};
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