Let dev server middleware to decide when to initialize

packages/neutrino-middleware-dev-server/index.js

@@ -3,68 +3,69 @@ const hot = require('neutrino-middleware-hot');
 const opn = require('opn');
 
 module.exports = (neutrino, options = {}) => {
-  neutrino.use(hot);
+  if (process.env.NODE_ENV === 'development') {
+    const config = neutrino.config;
+    const server = ramda.pathOr({}, ['options', 'server'], neutrino);
+    const protocol = process.env.HTTPS ? 'https' : 'http';
+    const publicHost = process.env.HOST;
+    const port = process.env.PORT || server.port || options.port || 5000;
+    const https = (protocol === 'https') || server.https || options.https;
+    let openInBrowser = false;
+    let serverPublic = false;
+    let host = 'localhost';
 
-  const config = neutrino.config;
-  const server = ramda.pathOr({}, ['options', 'server'], neutrino);
-  const protocol = process.env.HTTPS ? 'https' : 'http';
-  const publicHost = process.env.HOST;
-  const port = process.env.PORT || server.port || options.port || 5000;
-  const https = (protocol === 'https') || server.https || options.https;
-  let openInBrowser = false;
-  let serverPublic = false;
-  let host = 'localhost';
+    if (server.public !== undefined) {
+      serverPublic = Boolean(server.public);
+    } else if (options.public !== undefined) {
+      serverPublic = Boolean(options.public);
+    }
 
-  if (server.public !== undefined) {
-    serverPublic = Boolean(server.public);
-  } else if (options.public !== undefined) {
-    serverPublic = Boolean(options.public);
-  }
-
-  if (serverPublic) {
-    host = '0.0.0.0';
-  }
+    if (serverPublic) {
+      host = '0.0.0.0';
+    }
 
-  if (server.open !== undefined) {
-    openInBrowser = Boolean(server.open);
-  } else if (options.open !== undefined) {
-    openInBrowser = Boolean(options.open);
-  }
+    if (server.open !== undefined) {
+      openInBrowser = Boolean(server.open);
+    } else if (options.open !== undefined) {
+      openInBrowser = Boolean(options.open);
+    }
 
-  config
-    .devServer
-      .host(String(host))
-      .port(Number(port))
-      .https(Boolean(https))
-      .contentBase(neutrino.options.source)
-      .historyApiFallback(true)
-      .hot(true)
-      .headers({ host: publicHost })
-      .public(publicHost)
-      .publicPath('/')
-      .stats({
-        assets: false,
-        children: false,
-        chunks: false,
-        colors: true,
-        errors: true,
-        errorDetails: true,
-        hash: false,
-        modules: false,
-        publicPath: false,
-        timings: false,
-        version: false,
-        warnings: true
-      })
-      .end()
-    .entry('index')
-      .prepend(require.resolve('webpack/hot/dev-server'))
-      .prepend(`${require.resolve('webpack-dev-server/client')}?${protocol}://${host}:${port}`);
+    neutrino.use(hot);
+    config
+      .devServer
+        .host(String(host))
+        .port(Number(port))
+        .https(Boolean(https))
+        .contentBase(neutrino.options.source)
+        .historyApiFallback(true)
+        .hot(true)
+        .headers({ host: publicHost })
+        .public(publicHost)
+        .publicPath('/')
+        .stats({
+          assets: false,
+          children: false,
+          chunks: false,
+          colors: true,
+          errors: true,
+          errorDetails: true,
+          hash: false,
+          modules: false,
+          publicPath: false,
+          timings: false,
+          version: false,
+          warnings: true
+        })
+        .end()
+      .entry('index')
+        .prepend(require.resolve('webpack/hot/dev-server'))
+        .prepend(`${require.resolve('webpack-dev-server/client')}?${protocol}://${host}:${port}`);
 
-  if (openInBrowser) {
-    neutrino.on('start', () => {
-      const endHost = serverPublic ? publicHost : host;
-      opn(`${protocol}://${endHost}:${port}`);
-    });
+    if (openInBrowser) {
+      neutrino.on('start', () => {
+        const endHost = serverPublic ? publicHost : host;
+        opn(`${protocol}://${endHost}:${port}`);
+      });
+    }
   }
 };

packages/neutrino-preset-web/index.js

@@ -42,6 +42,7 @@ module.exports = (neutrino) => {
   neutrino.use(imageLoader);
   neutrino.use(htmlTemplate, neutrino.options.html);
   neutrino.use(namedModules);
+  neutrino.use(devServer);
   neutrino.use(compileLoader, {
     include: [neutrino.options.source, neutrino.options.tests, require.resolve('./polyfills.js')],
     babel: {
@@ -112,7 +113,6 @@ module.exports = (neutrino) => {
         envs: ['browser', 'commonjs']
       }))
     .when(process.env.NODE_ENV === 'development', (config) => {
-      neutrino.use(devServer);
       config.devtool('source-map');
     }, (config) => {
       neutrino.use(clean, { paths: [neutrino.options.output] });