fix(v2): do not force terminate building if client bundle failed in development mode (#2437)

packages/docusaurus/src/webpack/client.ts

@@ -17,6 +17,7 @@ import LogPlugin from './plugins/LogPlugin';
 
 export function createClientConfig(props: Props): Configuration {
   const isProd = process.env.NODE_ENV === 'production';
+  const isBuilding = process.argv[2] === 'build';
   const config = createBaseConfig(props, false);
 
   const clientConfig = merge(config, {
@@ -32,8 +33,17 @@ export function createClientConfig(props: Props): Configuration {
       runtimeChunk: true,
     },
     plugins: [
-      // Plugin to force terminate building if errors happened in the client bundle
+      new ChunkAssetPlugin(),
-      {
+      // Show compilation progress bar and build time.
+      new LogPlugin({
+        name: 'Client',
+      }),
+    ],
+  });
+
+  // When building include the plugin to force terminate building if errors happened in the client bundle.
+  if (isBuilding) {
+    clientConfig.plugins!.push({
       apply: compiler => {
         compiler.hooks.done.tap('client:done', stats => {
           if (stats.hasErrors()) {
@@ -51,14 +61,8 @@ export function createClientConfig(props: Props): Configuration {
           }
         });
       },
-      },
-      new ChunkAssetPlugin(),
-      // Show compilation progress bar and build time.
-      new LogPlugin({
-        name: 'Client',
-      }),
-    ],
     });
+  }
 
   return clientConfig;
 }