refactor: address frontend review feedback

src/features/tbank-connection/model/screen-sync.test.tsx

@@ -135,12 +135,11 @@ describe("page-owned screen synchronization", () => {
 			expect(modes).toEqual(
 				cached
 					? [
-							null, // eslint-disable-line unicorn/no-null -- Preserve explicit null in the API fixture.
-							// eslint-disable-next-line unicorn/no-null -- Exercise the explicit null returned by the production API/DOM contract.
+							null,
 							null,
 							"observe",
 						]
-					: [null, "observe"], // eslint-disable-line unicorn/no-null -- Preserve explicit null in the API fixture.
+					: [null, "observe"],
 			);
 			expect(posts).toBe(0);
 			expect(result.current.disabled.data).toBeUndefined();
@@ -316,7 +315,7 @@ describe("page-owned screen synchronization", () => {
 
 			await waitFor(() => expect(result.current.accounts.isSuccess).toBe(true));
 			expect(result.current.accounts.data).toEqual([]);
-			// eslint-disable-next-line unicorn/no-null -- Preserve the API/DOM null sentinel in the expected response.
+
 			expect(modes).toEqual([null, "observe"]);
 			expect(
 				queryClient
@@ -357,8 +356,6 @@ describe("page-owned screen synchronization", () => {
 			http.get("*/api/v1/tbank-sync/:id", () => {
 				polls++;
 
-				/* eslint-disable unicorn/no-null -- Fixture preserves the production contract’s explicit null values. */
-
 				return HttpResponse.json(
 					{
 						errorCode: null,
@@ -369,7 +366,6 @@ describe("page-owned screen synchronization", () => {
 						scope: { screen: "accounts" },
 						state: "succeeded",
 					},
-					/* eslint-enable unicorn/no-null */
 				);
 			}),
 		);
@@ -397,14 +393,14 @@ describe("page-owned screen synchronization", () => {
 			expect(result.current.accounts.meta?.stateVersion).toBe("2"),
 		);
 		expect(bodies).toEqual([{ screen: "accounts" }]);
-		// eslint-disable-next-line unicorn/no-null -- Preserve the API/DOM null sentinel in the expected response.
+
 		expect(modes).toEqual([null, "observe"]);
 		vi.useFakeTimers();
 
 		try {
 			await act(() => vi.advanceTimersByTimeAsync(120_000));
 			expect(polls).toBe(1);
-			// eslint-disable-next-line unicorn/no-null -- Preserve the API/DOM null sentinel in the expected response.
+
 			expect(modes).toEqual([null, "observe"]);
 			unmount();
 			await vi.advanceTimersByTimeAsync(120_000);
@@ -429,10 +425,10 @@ describe("page-owned screen synchronization", () => {
 					resource(
 						isCompleted
 							? []
-							: null, // eslint-disable-line unicorn/no-null -- Preserve the nullable API fixture.
+							: null,
 						{
 							stateVersion: isCompleted ? "covered" : "initial",
-							sync: { errorCode: null, id: "history", state: "running" }, // eslint-disable-line unicorn/no-null -- Preserve explicit null in the API fixture.
+							sync: { errorCode: null, id: "history", state: "running" },
 						},
 					);
 
@@ -445,8 +441,6 @@ describe("page-owned screen synchronization", () => {
 					http.get("*/api/v1/tbank-sync/:id", () => {
 						polls++;
 
-						/* eslint-disable unicorn/no-null -- Fixture preserves the production contract’s explicit null values. */
-
 						return HttpResponse.json(
 							{
 								errorCode: null,
@@ -461,7 +455,6 @@ describe("page-owned screen synchronization", () => {
 								scope: null,
 								state: "running",
 							},
-							/* eslint-enable unicorn/no-null */
 						);
 					}),
 				);
@@ -493,7 +486,7 @@ describe("page-owned screen synchronization", () => {
 				await act(async () => {
 					await new Promise(resolve => setTimeout(resolve, 1100));
 				});
-				// eslint-disable-next-line unicorn/no-null -- Preserve the API/DOM null sentinel in the expected response.
+
 				expect(modes).toEqual([null, "observe"]);
 				if (boundary === "leave") unmount();
 				else act(() => configureAuthClient());
@@ -515,12 +508,11 @@ describe("page-owned screen synchronization", () => {
 			http.get("*/api/v1/brokerage-accounts", () =>
 				HttpResponse.json(
 					resource(
-						/* eslint-disable unicorn/no-null -- Fixture preserves the production contract’s explicit null values. */
+
 						[],
 						{
 							sync: { errorCode: null, id: "revoked", state: "running" },
 						},
-						/* eslint-enable unicorn/no-null */
 					),
 				),
 			),
@@ -550,7 +542,7 @@ describe("page-owned screen synchronization", () => {
 		const modes: (null | string)[] = [];
 
 		const dependency = resource(
-			/* eslint-disable unicorn/no-null -- Fixture preserves the production contract’s explicit null values. */
+
 			[],
 			{
 				resourceKey: "operations",
@@ -561,7 +553,6 @@ describe("page-owned screen synchronization", () => {
 					state: isObserved ? "idle" : "running",
 				},
 			},
-			/* eslint-enable unicorn/no-null */
 		).meta;
 
 		server.use(
@@ -574,7 +565,7 @@ describe("page-owned screen synchronization", () => {
 					resource(
 						isObserved
 							? []
-							: null, // eslint-disable-line unicorn/no-null -- Exercise the explicit null returned by the production API/DOM contract.
+							: null,
 						{
 							dependencies: [
 								{
@@ -588,7 +579,7 @@ describe("page-owned screen synchronization", () => {
 				);
 			}),
 			http.get("*/api/v1/tbank-sync/:id", () =>
-				/* eslint-disable unicorn/no-null -- Fixture preserves the production contract’s explicit null values. */
+
 				HttpResponse.json(
 					{
 						errorCode: null,
@@ -599,7 +590,6 @@ describe("page-owned screen synchronization", () => {
 						scope: null,
 						state: "succeeded",
 					},
-					/* eslint-enable unicorn/no-null */
 				),
 			),
 		);
@@ -615,7 +605,7 @@ describe("page-owned screen synchronization", () => {
 		);
 
 		await waitFor(() => expect(result.current.data).toEqual([]));
-		// eslint-disable-next-line unicorn/no-null -- Preserve the API/DOM null sentinel in the expected response.
+
 		expect(modes).toEqual([null, "observe"]);
 	});
 

src/features/tbank-connection/model/screen-sync.ts

@@ -206,7 +206,7 @@ function useScreenSync(scope: InvestmentScreen, resources: ScreenResource[]) {
 		finally {
 			if (requestInFlightRef.current === scopeKey)
 				requestInFlightRef.current
-					// eslint-disable-next-line unicorn/no-null -- Preserve the nullable domain value consumed by this view model.
+
 					= null;
 		}
 	};

src/features/tbank-connection/model/sync.test.tsx

@@ -48,8 +48,6 @@ describe("sync connection and session boundaries", () => {
 					started += 1;
 					await blocked;
 
-					/* eslint-disable unicorn/no-null -- Fixture preserves the production contract’s explicit null values. */
-
 					return HttpResponse.json(
 						{
 							...accepted,
@@ -59,7 +57,6 @@ describe("sync connection and session boundaries", () => {
 							resources: [],
 							state: "succeeded",
 						},
-						/* eslint-enable unicorn/no-null */
 					);
 				}),
 			);
@@ -103,13 +100,12 @@ describe("sync connection and session boundaries", () => {
 
 				if (boundary === "connection")
 					commitTbankConnectionBoundary(
-						/* eslint-disable unicorn/no-null -- Fixture preserves the production contract’s explicit null values. */
+
 						queryClient,
 						{
 							connected: false,
 							connectedAt: null,
 						},
-						/* eslint-enable unicorn/no-null */
 					);
 				else {
 					generation += 1;