fix(core): close webpack compiler when build complete (#6608)

kazamov · FrozenPandaz · commit ad62a27719b2 · 2021-08-17T10:06:11.000-04:00
* fix(core): close webpack compiler when build complete Call webpack `close` method when build complete according to https://webpack.js.org/api/node/#run. Fallback webpack 4 `close` method
diff --git a/packages/workspace/src/utilities/run-webpack.ts b/packages/workspace/src/utilities/run-webpack.ts
@@ -26,7 +26,15 @@ export function runWebpack(config: any, webpack: any): Observable<any> {
     } else {
       webpackCompiler.run((err, stats) => {
         callback(err, stats);
-        subscriber.complete();
+
+        // TODO: Delete for Nx 13 and leave only the call to close method
+        if (typeof webpackCompiler.close === 'function') {
+          webpackCompiler.close(() => {
+            subscriber.complete();
+          });
+        } else {
+          subscriber.complete();
+        }
       });
     }
   });
