fix: show warning for non-web targets

Author: snitin315

lib/utils/DevServerPlugin.js

@@ -10,9 +10,11 @@ const EntryPlugin = webpack.EntryPlugin;
 class DevServerPlugin {
   /**
    * @param {?Object} options - Dev-Server options
+   * @param {?Object} logger - Dev-Server logger
    */
-  constructor(options) {
+  constructor(options, logger) {
     this.options = options;
+    this.logger = logger;
   }
 
   /**
@@ -163,6 +165,13 @@ class DevServerPlugin {
       additionalEntries.push(hotEntry);
     }
 
+    if (!isWebTarget) {
+      this.logger.info(`A non-web target was selected in dev server config.`);
+      if (this.options.liveReload) {
+        this.logger.warn(`Live reload will not work with a non-web target.`);
+      }
+    }
+
     // use a hook to add entries if available
     if (EntryPlugin) {
       for (const additionalEntry of additionalEntries) {

lib/utils/updateCompiler.js

@@ -4,10 +4,11 @@ const DevServerPlugin = require('./DevServerPlugin');
 
 function updateCompiler(compiler, options) {
   const compilers = compiler.compilers || [compiler];
+  const logger = compiler.getInfrastructureLogger('webpack-dev-server');
 
   // eslint-disable-next-line no-shadow
   compilers.forEach((compiler) => {
-    new DevServerPlugin(options).apply(compiler);
+    new DevServerPlugin(options, logger).apply(compiler);
   });
 }
 

test/e2e/DevServer.test.js

@@ -95,6 +95,22 @@ describe('DevServer', () => {
       .catch(done);
   });
 
+  it('should show a warning for live reloading with non-web target', (done) => {
+    testBin(
+      '--config ./test/fixtures/dev-server/default-config.js --target node --live-reload'
+    )
+      .then((output) => {
+        expect(output.stderr).toContain(
+          'A non-web target was selected in dev server config'
+        );
+        expect(output.stderr).toContain(
+          'Live reload will not work with a non-web target'
+        );
+        done();
+      })
+      .catch(done);
+  });
+
   it('does not use client.path when default', (done) => {
     testBin('--config ./test/fixtures/dev-server/client-default-path-config.js')
       .then((output) => {