fix(core): prevent task hashing when project graph has errors (#34116)

FrozenPandaz · web-flow · commit 4202f2c76076 · 2026-01-16T18:30:35.000-05:00
## Current Behavior

When the daemon encounters a project graph error during task hashing, it
extracts the partial project graph from the error and continues hashing
tasks. This can produce incorrect hashes since the graph is incomplete.

## Expected Behavior

The error should be thrown immediately, preventing any hashing attempts
with an invalid project graph. This ensures we don't produce incorrect
task hashes that could lead to cache issues.

## Related Issue(s)

N/A - Bug fix discovered during development
diff --git a/packages/nx/src/daemon/server/handle-hash-tasks.ts b/packages/nx/src/daemon/server/handle-hash-tasks.ts
@@ -2,7 +2,6 @@ import { Task, TaskGraph } from '../../config/task-graph';
 import { getCachedSerializedProjectGraphPromise } from './project-graph-incremental-recomputation';
 import { InProcessTaskHasher } from '../../hasher/task-hasher';
 import { readNxJson } from '../../config/configuration';
-import { DaemonProjectGraphError } from '../../project-graph/error-types';
 
 /**
  * We use this not to recreated hasher for every hash operation
@@ -18,21 +17,11 @@ export async function handleHashTasks(payload: {
   taskGraph: TaskGraph;
   cwd: string;
 }) {
-  const {
-    error,
-    projectGraph: _graph,
-    allWorkspaceFiles,
-    fileMap,
-    rustReferences,
-  } = await getCachedSerializedProjectGraphPromise();
+  const { error, projectGraph, allWorkspaceFiles, fileMap, rustReferences } =
+    await getCachedSerializedProjectGraphPromise();
 
-  let projectGraph = _graph;
   if (error) {
-    if (error instanceof DaemonProjectGraphError) {
-      projectGraph = error.projectGraph;
-    } else {
-      throw error;
-    }
+    throw error;
   }
 
   const nxJson = readNxJson();
