Because there are not enough webpack middleware for koa out there
webpack-dev-middleware and webpack-hot-middleware with good defaults for fast setup of koa dev servers.
npm install --save koa-hot-dev-webpack webpackkoaHotDevWebpack = require("koa-hot-dev-webpack")
koa.use(koaHotDevWebpack(webpackConfig,middlewareOptions))
// webpackConfig is mandatoryIt will add the following plugins:
// for Webpack 1
new webpack.optimize.OccurenceOrderPlugin()
new webpack.NoErrorsPlugin()
new webpack.HotModuleReplacementPlugin()
// for Webpack 2
new webpack.NoEmitOnErrorsPlugin()
new webpack.HotModuleReplacementPlugin()and inject webpack-hot-middleware/client to all entry points
middlewareOptions defaults are
{
publicPath: webpackConfig.output.publicPath || "/"
noInfo: true
stats: { colors:true }
}All only work for the last instance created!
koaHotDevWebpack.invalidate() // to invalidate the bundle
koaHotDevWebpack.reload() // to reload client side
koaHotDevWebpack.close() // to close webpackCopyright (c) 2016 Paul Pflugradt Licensed under the MIT license.