fix

js_modules/dagster-ui/packages/ui-core/jest/mocks/ComputeGraphData.worker.ts

@@ -4,10 +4,17 @@ import {ComputeGraphDataMessageType} from '../../src/asset-graph/ComputeGraphDat
 
 // eslint-disable-next-line import/no-default-export
 export default class MockWorker {
-  onmessage = (_: any) => {};
+  onmessage: Array<(data: any) => void> = [];
 
   addEventListener(_type: string, handler: any) {
-    this.onmessage = handler;
+    this.onmessage.push(handler);
+  }
+
+  removeEventListener(_type: string, handler: any) {
+    const index = this.onmessage.indexOf(handler);
+    if (index !== -1) {
+      this.onmessage.splice(index, 1);
+    }
   }
 
   // mock expects data: { } instead of e: { data: { } }
@@ -17,7 +24,7 @@ export default class MockWorker {
         setFeatureFlagsInternal({flagAssetSelectionSyntax: true});
       }
       const state = await computeGraphData(data);
-      this.onmessage({data: {...state, id: data.id}});
+      this.onmessage.forEach((onmessage) => onmessage({data: {...state, id: data.id}}));
     }
   }
 }

js_modules/dagster-ui/packages/ui-core/src/assets/__tests__/AssetView.test.tsx

@@ -35,13 +35,12 @@ import '../../../jest/mocks/ComputeGraphData.worker';
 
 // This file must be mocked because Jest can't handle `import.meta.url`.
 jest.mock('../../graph/asyncGraphLayout', () => ({}));
-jest.mock(
-  'lodash/throttle',
-  () =>
-    (fn: (...args: any[]) => any) =>
+jest.mock('../../asset-graph/throttleLatest', () => ({
+  throttleLatest:
+    (fn: any) =>
     (...args: any[]) =>
       fn(...args),
-);
+}));
 
 // These files must be mocked because useVirtualizer tries to create a ResizeObserver,
 // and the component tree fails to mount.