Removed a GraphQL error suppression on assignees dropdown

app/assets/javascripts/vue_shared/components/user_select/user_select.vue

@@ -96,9 +96,6 @@ export default {
       },
     },
     searchUsers: {
-      // TODO Remove error policy
-      // https://gitlab.com/gitlab-org/gitlab/-/issues/329750
-      errorPolicy: 'all',
       query: searchUsers,
       variables() {
         return {
@@ -111,28 +108,10 @@ export default {
         return !this.isEditing;
       },
       update(data) {
-        // TODO Remove null filter (BE fix required)
-        // https://gitlab.com/gitlab-org/gitlab/-/issues/329750
         return data.workspace?.users?.nodes.filter((x) => x?.user).map(({ user }) => user) || [];
       },
       debounce: ASSIGNEES_DEBOUNCE_DELAY,
-      error({ graphQLErrors }) {
-        // TODO This error suppression is temporary (BE fix required)
-        // https://gitlab.com/gitlab-org/gitlab/-/issues/329750
-        const isNullError = ({ message }) => {
-          return message === 'Cannot return null for non-nullable field GroupMember.user';
-        };
-
-        if (graphQLErrors?.length > 0 && graphQLErrors.every(isNullError)) {
-          // only null-related errors exist, suppress them.
-          // eslint-disable-next-line no-console
-          console.error(
-            "Suppressing the error 'Cannot return null for non-nullable field GroupMember.user'. Please see https://gitlab.com/gitlab-org/gitlab/-/issues/329750",
-          );
-          this.isSearching = false;
-          return;
-        }
-
+      error() {
         this.$emit('error');
         this.isSearching = false;
       },

spec/frontend/vue_shared/components/user_select_spec.js

@@ -275,48 +275,4 @@ describe('User select dropdown', () => {
       expect(findEmptySearchResults().exists()).toBe(true);
     });
   });
-
-  // TODO Remove this test after the following issue is resolved in the backend
-  // https://gitlab.com/gitlab-org/gitlab/-/issues/329750
-  describe('temporary error suppression', () => {
-    beforeEach(() => {
-      jest.spyOn(console, 'error').mockImplementation();
-    });
-
-    const nullError = { message: 'Cannot return null for non-nullable field GroupMember.user' };
-
-    it.each`
-      mockErrors
-      ${[nullError]}
-      ${[nullError, nullError]}
-    `('does not emit errors', async ({ mockErrors }) => {
-      createComponent({
-        searchQueryHandler: jest.fn().mockResolvedValue({
-          errors: mockErrors,
-        }),
-      });
-      await waitForSearch();
-
-      expect(wrapper.emitted()).toEqual({});
-      // eslint-disable-next-line no-console
-      expect(console.error).toHaveBeenCalled();
-    });
-
-    it.each`
-      mockErrors
-      ${[{ message: 'serious error' }]}
-      ${[nullError, { message: 'serious error' }]}
-    `('emits error when non-null related errors are included', async ({ mockErrors }) => {
-      createComponent({
-        searchQueryHandler: jest.fn().mockResolvedValue({
-          errors: mockErrors,
-        }),
-      });
-      await waitForSearch();
-
-      expect(wrapper.emitted('error')).toEqual([[]]);
-      // eslint-disable-next-line no-console
-      expect(console.error).not.toHaveBeenCalled();
-    });
-  });
 });