I am trying to get hot-reloading to work with my setup. Currently, it works like so --
server.js
// this is the main server, which connects to db, serves react components, etc
const app = express();
app.get('/:params?*', (req, res) => {
res.status(200).send(`
<!doctype html>
<html>
<head>
<meta charset="utf-8">
</head>
<body>
hi
<script src="http://localhost:3000/build/client.js"></script>
</body>
</html>
`);
});
...
app.listen(5000);
gulpfile.babel.js
const CLIENT_DEV_CONFIG = {
entry: [
CLIENT_ENTRY,
'webpack-hot-middleware/client',
'eventsource-polyfill',
],
plugins: [
new webpack.HotModuleReplacementPlugin(),
],
output: {
...CLIENT_OUTPUT,
publicPath: 'http://localhost:3000/build/',
},
module: {
loaders: [BABEL_LOADER]
},
}
gulp.task('client-watch', done => {
console.log(CLIENT_DEV_CONFIG.output.publicPath);
const opts = {
hot: true,
publicPath: CLIENT_DEV_CONFIG.output.publicPath,
headers: {'Access-Control-Allow-Origin': '*'},
};
const app = new express();
const compiler = webpack(CLIENT_DEV_CONFIG);
app.use(webpackDevMiddleware(compiler, opts));
app.use(webpackHotMiddleWare(compiler));
app.listen(3000, (err) => {
console.log(err || '[webpack-hot-devserver] running on 3000');
done();
});
});
now,
localhost:5000
. It workslocalhost:3000/build/client.js
, it also worksBut, if I update something I don't get live updates, I need to refresh... :(
Looking at the network tab, I see a failing request to http://localhost:5000/__webpack_hmr
, and I am thinking this could be the causer.
http://localhost:5000/__webpack_hmr
should actually be http://localhost:3000/__webpack_hmr
However, I am not sure how to correct this
You can specify the URL in the webpack config in the line in the entry
array as seen below:
const CLIENT_DEV_CONFIG = {
entry: [
CLIENT_ENTRY,
`webpack-hot-middleware/client?path=${HOT_SERVER_URL}/__webpack_hmr`,
'eventsource-polyfill',
],
plugins: [
new webpack.HotModuleReplacementPlugin(),
],
output: {
...CLIENT_OUTPUT,
publicPath: `${HOT_SERVER_URL}/build/`,
},
module: {
loaders: [
{
...BABEL_LOADER,
query: {...BABEL_QUERY, presets: [...BABEL_QUERY.presets, 'react-hmre']},
},
],
},
}
So this line in particular:
`webpack-hot-middleware/client?path=${HOT_SERVER_URL}/__webpack_hmr`,
The path
option allows setting the location that hot module reload should hit to access the __webpack_hmr
endpoint. One could for example set it to:
'webpack-hot-middleware/client?path=//localhost:3000/__webpack_hmr'