fix(angular): add workaround to prevent process from exiting early wh…

…en building

ISSUES CLOSED: nrwl#5729

packages/tao/src/commands/ngcli-adapter.ts

@@ -1,6 +1,5 @@
 /* eslint-disable no-restricted-imports */
 import {
-  json,
   logging,
   normalize,
   Path,
@@ -49,8 +48,9 @@ export async function scheduleTarget(
     workspaces.createWorkspaceHost(fsHost)
   );
 
-  const registry = new json.schema.CoreSchemaRegistry();
+  const registry = new schema.CoreSchemaRegistry();
   registry.addPostTransform(schema.transforms.addUndefinedDefaults);
+  registry.useXDeprecatedProvider((msg) => logger.warn(msg));
   const architectHost = new WorkspaceNodeModulesArchitectHost(workspace, root);
   const architect = new Architect(architectHost, registry);
   const run = await architect.scheduleTarget(

packages/tao/src/commands/run.ts

@@ -131,19 +131,30 @@ async function iteratorToProcessStatusCode(
 ): Promise<number> {
   let success: boolean;
 
-  let prev: IteratorResult<{ success: boolean }>;
-  let current: IteratorResult<{ success: boolean }>;
-  do {
-    prev = current;
-    current = await i.next();
-  } while (!current.done);
+  // This is a workaround to fix an issue that only happens with
+  // the @angular-devkit/build-angular:browser builder. Starting
+  // on version 12.0.1, a SASS compilation implementation was
+  // introduced making use of workers and it's unref()-ing the worker
+  // too early, causing the process to exit early in environments
+  // like CI or when running Docker builds.
+  const keepProcessAliveInterval = setInterval(() => {}, 1000);
+  try {
+    let prev: IteratorResult<{ success: boolean }>;
+    let current: IteratorResult<{ success: boolean }>;
+    do {
+      prev = current;
+      current = await i.next();
+    } while (!current.done);
 
-  success =
-    current.value !== undefined || !prev
-      ? current.value.success
-      : prev.value.success;
+    success =
+      current.value !== undefined || !prev
+        ? current.value.success
+        : prev.value.success;
 
-  return success ? 0 : 1;
+    return success ? 0 : 1;
+  } finally {
+    clearInterval(keepProcessAliveInterval);
+  }
 }
 
 function createImplicitTargetConfig(