chore: add typed ESLint checks #18

Refs WealthLedger/main#18. Keep Biome; add no Prettier dependencies.

AGENTS.md

@@ -34,4 +34,4 @@ Testing и без production diff. Перед завершением повто
 | Money, account/position/income | Entity types, API snapshot, formatters и tests соответствующего slice |
 | Theme/tokens, UI-каталог | [UI](.ai/conventions/ui.md), [Storybook](README.md#ui-каталог-storybook) |
 | Поведение области | Source и tests её page/entity/feature; неясное ожидание уточни до изменения |
-| Versions/scripts/check scope | Manifest/lockfile, Biome/TypeScript/dependency configs |
+| Versions/scripts/check scope | Manifest/lockfile, ESLint/Biome/TypeScript/dependency configs |

README.md

@@ -81,8 +81,34 @@ npm run verify
 ```
 
 Команда проверяет, что generated OpenAPI types соответствуют committed snapshot,
-затем запускает strict TypeScript, Biome, один coverage-backed запуск Vitest,
+затем запускает strict TypeScript, Biome, ESLint и проверку его конфигурации,
+один coverage-backed запуск Vitest,
 Knip, dependency rules приложения и stories, сборки приложения и Storybook.
+
+`npm run lint` объединяет `lint:biome` и `lint:eslint`. Biome сохраняет
+форматирование, сортировку импортов, magic numbers и accessibility-проверки.
+[ESLint](eslint.config.mjs) добавляет typed linting, React Compiler/hooks,
+Fast Refresh, TanStack Query, выбранные Unicorn-правила и проверки тестов/stories.
+Prettier не добавлен. `npm run test:lint` проверяет правила на ошибочных примерах
+и исключение generated/build artifacts. `lint:eslint` сначала собирает private
+packages, чтобы анализ типов использовал их актуальные declarations.
+
+Пересекающиеся hook-диагностики принадлежат официальному `react-hooks`.
+Testing Library проверяет async-корректность; DOM structure/geometry tests
+сохраняют прямой доступ к узлам. Async doubles допускаются без искусственного
+`await`; Vitest допускает второй аргумент сообщения и ветвления фиксированных
+`it.each` сценариев. React event handlers допускают Promise, но их тела остаются
+под `no-floating-promises`. Локальные исключения объясняют сохранение wire
+ProblemDetails, generated query keys и раннее подключение rejection assertions
+в race-тестах. Плагин Query не доказывает корректность всех generated/custom
+обёрток: transport/cache сценарии по-прежнему проверяют MSW-тесты.
+
+Дополнительные `no-unnecessary-condition` и `no-deprecated` пока не включены:
+первому нужна отдельная оценка индексного доступа и защитных runtime guards,
+второму — отдельная миграция API зависимостей. Пакеты второй волны и
+`jsx-a11y` без заявленной поддержки ESLint 10 отложены в
+[workspace issue #18](https://git.personal.ksv741.ru/WealthLedger/main/issues/18).
+
 Vitest включает JSDOM-тесты и проверку геометрии секций позиций в headless
 Chromium при ширинах 375 и 1280 px. Browser project не использует JSDOM setup
 и его заглушки layout API. Только браузерная проверка:

biome.json

@@ -36,6 +36,7 @@
 	"overrides": [
 		{
 			"includes": [
+				"eslint.config.mjs",
 				"vite.config.ts",
 				"vitest.config.ts",
 				".storybook/main.ts",

eslint.config.mjs

@@ -0,0 +1,131 @@
+import js from "@eslint/js";
+import react from "@eslint-react/eslint-plugin";
+import query from "@tanstack/eslint-plugin-query";
+import vitest from "@vitest/eslint-plugin";
+import { defineConfig, globalIgnores } from "eslint/config";
+import { importX } from "eslint-plugin-import-x";
+import hooks from "eslint-plugin-react-hooks";
+import refresh from "eslint-plugin-react-refresh";
+import storybook from "eslint-plugin-storybook";
+import testingLibrary from "eslint-plugin-testing-library";
+import unicorn from "eslint-plugin-unicorn";
+import globals from "globals";
+import tseslint from "typescript-eslint";
+
+export default defineConfig(
+	globalIgnores([
+		"**/dist/**",
+		"dist-ssr/**",
+		"storybook-static/**",
+		"coverage/**",
+		".vitest/**",
+		".scannerwork/**",
+		"src/shared/api/generated/**",
+		"src/shared/api/spec/**",
+	]),
+	{
+		files: ["**/*.{js,mjs,cjs,ts,tsx}"],
+		extends: [js.configs.recommended],
+		linterOptions: { reportUnusedDisableDirectives: "error" },
+	},
+	{
+		files: ["**/*.{js,mjs,cjs}", "**/*.config.ts", ".storybook/main.ts"],
+		languageOptions: { globals: globals.node },
+	},
+	{
+		files: ["**/*.{ts,tsx}"],
+		extends: [tseslint.configs.recommendedTypeChecked],
+		languageOptions: {
+			parserOptions: {
+				projectService: true,
+				tsconfigRootDir: import.meta.dirname,
+			},
+		},
+		rules: {
+			"@typescript-eslint/switch-exhaustiveness-check": "error",
+			// React ignores handler return values; their bodies still check floating promises.
+			"@typescript-eslint/no-misused-promises": [
+				"error",
+				{ checksVoidReturn: { attributes: false } },
+			],
+		},
+	},
+	{
+		files: [
+			"src/**/*.{ts,tsx}",
+			"packages/*/src/**/*.{ts,tsx}",
+			".storybook/preview.tsx",
+		],
+		extends: [
+			react.configs["recommended-type-checked"],
+			react.configs["disable-naming-convention"],
+			hooks.configs.flat.recommended,
+			query.configs["flat/recommended"],
+		],
+		languageOptions: { globals: globals.browser },
+		plugins: { "import-x": importX, unicorn },
+		rules: {
+			// The official hooks plugin owns Compiler and hook diagnostics.
+			"@eslint-react/error-boundaries": "off",
+			"@eslint-react/exhaustive-deps": "off",
+			"@eslint-react/purity": "off",
+			"@eslint-react/rules-of-hooks": "off",
+			"@eslint-react/set-state-in-effect": "off",
+			"@eslint-react/set-state-in-render": "off",
+			"@eslint-react/static-components": "off",
+			"@eslint-react/unsupported-syntax": "off",
+			"@eslint-react/use-memo": "off",
+			// useContext remains supported; a lint rollout does not require an API migration.
+			"@eslint-react/no-use-context": "off",
+			"import-x/no-default-export": "error",
+			"import-x/exports-last": "error",
+			// Biome owns formatting, import sorting and magic numbers during coexistence.
+			"unicorn/no-array-fill-with-reference-type": "error",
+			"unicorn/no-await-in-promise-methods": "error",
+			"unicorn/no-single-promise-in-promise-methods": "error",
+			"unicorn/prefer-array-some": "error",
+			"unicorn/prefer-includes": "error",
+		},
+	},
+	{
+		files: ["src/**/*.tsx", "packages/*/src/**/*.tsx"],
+		ignores: ["**/*.test.tsx", "**/*.stories.tsx", "src/test/**"],
+		extends: [refresh.configs.vite],
+	},
+	{
+		files: ["**/*.test.{ts,tsx}"],
+		extends: [vitest.configs.recommended],
+		rules: {
+			"vitest/no-focused-tests": "error",
+			"vitest/valid-expect": ["error", { maxArgs: 2 }],
+			// it.each cases select different expected outcomes and recovery setup steps.
+			"vitest/no-conditional-expect": "off",
+			// Async test doubles preserve the public Promise contract without artificial awaits.
+			"@typescript-eslint/require-await": "off",
+		},
+	},
+	{
+		files: ["**/*.test.tsx"],
+		plugins: { "testing-library": testingLibrary },
+		// Start with async correctness. DOM structure/geometry tests need direct node access.
+		rules: {
+			"testing-library/await-async-events": "error",
+			"testing-library/await-async-queries": "error",
+			"testing-library/await-async-utils": "error",
+			"testing-library/no-await-sync-events": "error",
+			"testing-library/no-await-sync-queries": "error",
+			"testing-library/no-promise-in-fire-event": "error",
+			"testing-library/no-wait-for-side-effects": "error",
+			"testing-library/no-wait-for-snapshot": "error",
+			"testing-library/prefer-find-by": "error",
+		},
+	},
+	storybook.configs["flat/recommended"],
+	{
+		files: ["**/*.stories.tsx", ".storybook/preview.tsx"],
+		rules: {
+			"import-x/no-default-export": "off",
+			"import-x/exports-last": "off",
+		},
+	},
+);

package.json

@@ -13,15 +13,18 @@
 		"preview:catalog": "vite preview --outDir storybook-static",
 		"typecheck": "npm run build:packages && tsc -b --noEmit",
 		"build": "npm run build:packages && tsc -b && vite build",
-		"lint": "biome check .",
+		"lint": "npm run lint:biome && npm run lint:eslint",
+		"lint:biome": "biome check .",
+		"lint:eslint": "npm run build:packages && eslint . --max-warnings=0",
 		"test": "npm run build:packages && vitest",
 		"test:run": "npm run build:packages && vitest run",
 		"test:coverage": "npm run build:packages && vitest run --coverage",
+		"test:lint": "node --test scripts/test-eslint.mjs",
 		"openapi:generate": "openapi-typescript src/shared/api/spec/openapi.json -o src/shared/api/generated/schema.d.ts",
 		"openapi:check": "node scripts/check-openapi.mjs",
 		"knip": "npm run build:packages && knip",
 		"deps": "npm run build:packages && depcruise src packages --config dependency-cruiser.cjs --output-type err-long",
-		"verify": "npm run build:packages && npm run openapi:check && tsc -b --noEmit && npm run lint && vitest run --coverage && knip && depcruise src packages --config dependency-cruiser.cjs --output-type err-long && depcruise src packages .storybook/preview.tsx --config .storybook/dependency-cruiser.cjs --output-type err-long && tsc -b && vite build && storybook build --output-dir storybook-static --disable-telemetry",
+		"verify": "npm run build:packages && npm run openapi:check && tsc -b --noEmit && npm run lint && npm run test:lint && vitest run --coverage && knip && depcruise src packages --config dependency-cruiser.cjs --output-type err-long && depcruise src packages .storybook/preview.tsx --config .storybook/dependency-cruiser.cjs --output-type err-long && tsc -b && vite build && storybook build --output-dir storybook-static --disable-telemetry",
 		"prepare": "husky",
 		"preview": "vite preview",
 		"deps:storybook": "npm run build:packages && depcruise src packages .storybook/preview.tsx --config .storybook/dependency-cruiser.cjs --output-type err-long",
@@ -62,10 +65,13 @@
 		"@biomejs/biome": "2.5.13",
 		"@commitlint/cli": "21.2.2",
 		"@commitlint/config-conventional": "21.2.2",
+		"@eslint-react/eslint-plugin": "5.21.0",
+		"@eslint/js": "10.0.1",
 		"@release-it/conventional-changelog": "12.0.0",
 		"@rolldown/plugin-babel": "0.2.4",
 		"@storybook/addon-docs": "10.6.0",
 		"@storybook/react-vite": "10.6.0",
+		"@tanstack/eslint-plugin-query": "5.104.0",
 		"@testing-library/jest-dom": "7.0.1",
 		"@testing-library/react": "16.3.3",
 		"@types/node": "24.13.4",
@@ -74,9 +80,18 @@
 		"@vitejs/plugin-react": "6.1.1",
 		"@vitest/browser-playwright": "5.0.0",
 		"@vitest/coverage-v8": "5.0.0",
+		"@vitest/eslint-plugin": "1.6.27",
 		"babel-plugin-react-compiler": "1.0.0",
 		"conventional-changelog-conventionalcommits": "10.4.0",
 		"dependency-cruiser": "18.2.0",
+		"eslint": "10.11.0",
+		"eslint-plugin-import-x": "4.17.1",
+		"eslint-plugin-react-hooks": "7.1.1",
+		"eslint-plugin-react-refresh": "0.5.7",
+		"eslint-plugin-storybook": "10.6.0",
+		"eslint-plugin-testing-library": "7.16.2",
+		"eslint-plugin-unicorn": "76.0.0",
+		"globals": "17.12.0",
 		"husky": "9.1.7",
 		"jsdom": "30.0.1",
 		"knip": "6.35.1",
@@ -87,6 +102,7 @@
 		"release-it": "21.0.2",
 		"storybook": "10.6.0",
 		"typescript": "5.9.3",
+		"typescript-eslint": "8.70.1",
 		"vite": "8.3.0",
 		"vite-plugin-pwa": "1.3.0",
 		"vitest": "5.0.0"

packages/ui/src/EntryCard/EntryCard.test.tsx

@@ -4,6 +4,22 @@ import { assert, describe, expect, it } from "vitest";
 import { EntryCard } from "./EntryCard";
 
 describe("EntryCard", () => {
+	it("does not leak a numeric zero from an absent action", () => {
+		render(
+			<MantineProvider>
+				<EntryCard
+					title="Пример"
+					metadata="Описание"
+					initial="У"
+					value="—"
+					valueLabel="Неизвестно"
+					tone="neutral"
+					actions={0}
+				/>
+			</MantineProvider>,
+		);
+		expect(screen.queryByText("0")).not.toBeInTheDocument();
+	});
 	it("keeps a failed image fallback until a new source is supplied", () => {
 		const props = {
 			title: "Пример",

packages/ui/src/EntryCard/EntryCard.tsx

@@ -58,7 +58,7 @@ const EntryCard: FC<EntryCardProps> = (props) => {
 					>
 						{props.valueLabel}
 					</Text>
-					{props.actions && (
+					{Boolean(props.actions) && (
 						<div className={classes.actions}>{props.actions}</div>
 					)}
 				</div>

scripts/test-eslint.mjs

@@ -0,0 +1,64 @@
+import assert from "node:assert/strict";
+import { test } from "node:test";
+import { ESLint } from "eslint";
+
+test("ESLint enforces the frontend profile and excludes generated artifacts", async () => {
+	const eslint = new ESLint();
+	for (const [filePath, code, rule] of [
+		[
+			"src/shared/api/problem-details.ts",
+			"export function run() { Promise.resolve(); }",
+			"@typescript-eslint/no-floating-promises",
+		],
+		[
+			"packages/ui/src/EntryCard/EntryCard.tsx",
+			'import { useState } from "react"; export function Example({ active }: { active: boolean }) { if (active) useState(0); return null; }',
+			"react-hooks/rules-of-hooks",
+		],
+		[
+			"src/shared/api/problem-details.ts",
+			"export const values = Array(3).fill({});",
+			"unicorn/no-array-fill-with-reference-type",
+		],
+		[
+			"src/shared/api/problem-details.ts",
+			"export default 1;",
+			"import-x/no-default-export",
+		],
+		[
+			"src/shared/api/client.test.ts",
+			'import { it } from "vitest"; it.only("focused", () => {});',
+			"vitest/no-focused-tests",
+		],
+		[
+			"packages/ui/src/EntryCard/EntryCard.test.tsx",
+			'import { screen } from "@testing-library/react"; screen.findByText("ready");',
+			"testing-library/await-async-queries",
+		],
+		[
+			"packages/ui/src/EntryCard/EntryCard.tsx",
+			'import { QueryClient } from "@tanstack/react-query"; export function Example() { const client = new QueryClient(); return <div>{String(client)}</div>; }',
+			"@tanstack/query/stable-query-client",
+		],
+	]) {
+		const [result] = await eslint.lintText(code, { filePath });
+		assert.equal(result.fatalErrorCount, 0, filePath);
+		assert.ok(
+			result.messages.some((message) => message.ruleId === rule),
+			rule,
+		);
+	}
+	for (const file of [
+		"src/shared/api/generated/schema.d.ts",
+		"packages/ui/dist/index.js",
+		"storybook-static/index.js",
+		"coverage/index.js",
+	])
+		assert.equal(await eslint.isPathIgnored(file), true, file);
+	const story = await eslint.calculateConfigForFile(
+		"src/shared/ui/Button.stories.tsx",
+	);
+	assert.equal(story.rules["import-x/no-default-export"][0], 0);
+	assert.ok(story.rules["storybook/default-exports"][0] > 0);
+	assert.equal(story.rules["react-refresh/only-export-components"], undefined);
+});

src/app/routes/AppRoutes/AppRoutes.test.tsx

@@ -1,6 +1,6 @@
 import { MantineProvider } from "@mantine/core";
 import { QueryClientProvider } from "@tanstack/react-query";
-import { fireEvent, render, screen, waitFor } from "@testing-library/react";
+import { fireEvent, render, screen } from "@testing-library/react";
 import { cssVariablesResolver, theme } from "@wealthledger/ui/theme";
 import { HttpResponse, http } from "msw";
 import { MemoryRouter } from "react-router";
@@ -41,22 +41,18 @@ describe("AppRoutes", () => {
 	])("renders %s with its page title", async (path, title) => {
 		renderRoutes(path);
 
-		await waitFor(() =>
+		expect(
-			expect(
+			await screen.findByRole("heading", { level: 1, name: title }),
-				screen.getByRole("heading", { level: 1, name: title }),
+		).toBeInTheDocument();
-			).toBeInTheDocument(),
-		);
 		expect(document.title).toBe(`${title} — WealthLedger`);
 	});
 
 	it("redirects anonymous users from accounts", async () => {
 		renderRoutes("/accounts");
 
-		await waitFor(() =>
+		expect(
-			expect(
+			await screen.findByRole("heading", { level: 1, name: "Вход" }),
-				screen.getByRole("heading", { level: 1, name: "Вход" }),
+		).toBeInTheDocument();
-			).toBeInTheDocument(),
-		);
 	});
 
 	it("logs in through the public form and reaches the protected landing", async () => {
@@ -142,14 +138,12 @@ describe("AppRoutes", () => {
 		);
 		renderRoutes("/accounts");
 
-		await waitFor(() =>
+		expect(
-			expect(
+			await screen.findByRole("heading", {
-				screen.getByRole("heading", {
+				level: 2,
-					level: 2,
+				name: "Нет инвестиционных счетов",
-					name: "Нет инвестиционных счетов",
+			}),
-				}),
+		).toBeInTheDocument();
-			).toBeInTheDocument(),
-		);
 		expect(
 			screen.getByRole("navigation", { name: "WealthLedger" }),
 		).toBeInTheDocument();

src/app/routes/RouteErrorBoundary/RouteErrorBoundary.test.tsx

@@ -1,5 +1,5 @@
 import { MantineProvider } from "@mantine/core";
-import { fireEvent, render, screen, waitFor } from "@testing-library/react";
+import { fireEvent, render, screen } from "@testing-library/react";
 import { type FC, lazy, Suspense } from "react";
 import { MemoryRouter, useLocation, useNavigate } from "react-router";
 import { describe, expect, it, vi } from "vitest";
@@ -135,8 +135,6 @@ describe("RouteErrorBoundary", () => {
 		authenticated = true;
 		renderBoundary("/accounts");
 		screen.getByRole("button", { name: "go healthy" }).click();
-		await waitFor(() =>
+		expect(await screen.findByText("healthy route")).toBeInTheDocument();
-			expect(screen.getByText("healthy route")).toBeInTheDocument(),
-		);
 	});
 });

src/app/ui/AppBreadcrumbs/AccountScopeSwitch.tsx

@@ -33,7 +33,7 @@ const AccountScopeSwitch: FC<AccountScopeSwitchProps> = (props) => {
 				if (!value || value === accountId) return;
 				const filters = new URLSearchParams(search);
 				filters.delete("cursor");
-				navigate({
+				void navigate({
 					pathname: `/accounts/${encodeURIComponent(value)}${section ? `/${section}` : ""}`,
 					search: filters.toString(),
 				});

src/entities/bank-card/api/mutations.ts

@@ -13,6 +13,7 @@ async function mutationData<T>(
 	request: Promise<{ data?: T; error?: unknown }>,
 ) {
 	const { data, error } = await request;
+	// eslint-disable-next-line @typescript-eslint/only-throw-error -- Preserve generated ProblemDetails for apiErrorCode and field-error consumers.
 	if (error) throw error;
 	return data;
 }

src/entities/bank-card/api/queries.ts

@@ -81,6 +81,7 @@ function useBankOperations(
 		"/api/v1/bank-cards/{id}/operations",
 		{ params },
 	);
+	// eslint-disable-next-line @tanstack/query/exhaustive-deps -- Generated options.queryKey already contains params; retain the shared cache identity.
 	return useAuthenticatedQuery({
 		queryKey: all ? ([...options.queryKey, "all"] as const) : options.queryKey,
 		placeholderData: (
@@ -108,6 +109,7 @@ function useBankOperations(
 						signal,
 					},
 				);
+				// eslint-disable-next-line @typescript-eslint/only-throw-error -- Preserve generated ProblemDetails for apiErrorCode and field-error consumers.
 				if (error) throw error;
 				if (!data) throw new Error("Missing bank operations response");
 				if (!all) return data;

src/entities/bank-card/ui/CategoryManager/CategoryManager.tsx

@@ -101,28 +101,30 @@ const CategoryManager: FC<CategoryManagerProps> = (props) => {
 		>
 			<FormProvider {...methods}>
 				<form
-					onSubmit={methods.handleSubmit(async (values) => {
+					onSubmit={(event) => {
-						setError(undefined);
+						void methods.handleSubmit(async (values) => {
-						try {
+							setError(undefined);
-							if (editing)
+							try {
-								await mutation.updateCategory.mutateAsync({
+								if (editing)
-									id: editing.id,
+									await mutation.updateCategory.mutateAsync({
-									body: { name: values.name, version: editing.version },
+										id: editing.id,
-								});
+										body: { name: values.name, version: editing.version },
-							else {
+									});
-								const result = await mutation.createCategory.mutateAsync({
+								else {
-									name: values.name,
+									const result = await mutation.createCategory.mutateAsync({
-								});
+										name: values.name,
-								if (result) props.onCreated?.(result.id);
+									});
+									if (result) props.onCreated?.(result.id);
+								}
+								editSession.current++;
+								setEditing(undefined);
+								setLatest(undefined);
+								methods.reset({ name: "" });
+							} catch (failure) {
+								setError(failure);
 							}
-							editSession.current++;
+						})(event);
-							setEditing(undefined);
+					}}
-							setLatest(undefined);
-							methods.reset({ name: "" });
-						} catch (failure) {
-							setError(failure);
-						}
-					})}
 				>
 					<fieldset disabled={pending} className={classes.fieldset}>
 						<Stack>

src/entities/portfolio/api/resource-lifecycle.test.tsx

@@ -141,6 +141,7 @@ describe("persistent resource query lifecycle", () => {
 			"/api/v1/brokerage-accounts/{accountId}/portfolio",
 			{ params: { path: { accountId: "a" } } },
 		);
+		// eslint-disable-next-line vitest/valid-expect -- Attach rejection handling before releasing the request; the assertion is awaited below.
 		const rejected = expect(old).rejects.toMatchObject({ name: "AbortError" });
 		await apiClient.GET("/api/v1/brokerage-accounts/{accountId}/portfolio", {
 			params: { path: { accountId: "a" }, query: { sync: "observe" } },

src/features/auth/index.ts

@@ -1,4 +1,5 @@
-export { AuthProvider, useAuth } from "./model/auth";
+export { AuthProvider } from "./model/auth";
+export { useAuth } from "./model/auth-context";
 export { AuthPageLayout } from "./ui/AuthPageLayout/AuthPageLayout";
 export { LoginForm } from "./ui/LoginForm";
 export { RegisterForm } from "./ui/RegisterForm";

src/features/auth/model/auth-context.ts

@@ -0,0 +1,23 @@
+import { createContext, useContext } from "react";
+import type { paths } from "@/shared/api";
+
+type User =
+	paths["/api/v1/auth/me"]["get"]["responses"][200]["content"]["application/json"];
+type AuthContextValue = {
+	user: User | null;
+	accessToken: string | null;
+	ready: boolean;
+	login: (email: string, password: string) => Promise<void>;
+	register: (email: string, password: string) => Promise<void>;
+	logout: () => Promise<void>;
+	refresh: () => Promise<boolean>;
+};
+const AuthContext = createContext<AuthContextValue | null>(null);
+
+function useAuth() {
+	const context = useContext(AuthContext);
+	if (!context) throw new Error("AuthProvider is required");
+	return context;
+}
+
+export { AuthContext, type User, useAuth };

src/features/auth/model/auth.test.tsx

@@ -7,7 +7,8 @@ import { apiClient, apiQueryClient, useAuthenticatedQuery } from "@/shared/api";
 import { createTestQueryClient } from "@/test/query";
 import { resource } from "@/test/resource";
 import { server } from "@/test/server";
-import { AuthProvider, useAuth } from "./auth";
+import { AuthProvider } from "./auth";
+import { useAuth } from "./auth-context";
 
 const bankCardsKey = apiQueryClient.queryOptions("get", "/api/v1/bank-cards", {
 	params: { query: { includeArchived: "false" } },

src/features/auth/model/auth.tsx

@@ -1,32 +1,13 @@
 import { useQueryClient } from "@tanstack/react-query";
 import type { FC, PropsWithChildren } from "react";
-import {
+import { useCallback, useEffect, useRef, useState } from "react";
-	createContext,
-	useCallback,
-	useContext,
-	useEffect,
-	useRef,
-	useState,
-} from "react";
 import { apiClient, configureAuthClient, type paths } from "@/shared/api";
+import { AuthContext, type User } from "./auth-context";
 
-type User =
-	paths["/api/v1/auth/me"]["get"]["responses"][200]["content"]["application/json"];
 type Authentication =
 	paths["/api/v1/auth/login"]["post"]["responses"][200]["content"]["application/json"];
 type Credentials =
 	paths["/api/v1/auth/login"]["post"]["requestBody"]["content"]["application/json"];
-type AuthContextValue = {
-	user: User | null;
-	accessToken: string | null;
-	ready: boolean;
-	login: (email: string, password: string) => Promise<void>;
-	register: (email: string, password: string) => Promise<void>;
-	logout: () => Promise<void>;
-	refresh: () => Promise<boolean>;
-};
-const AuthContext = createContext<AuthContextValue | null>(null);
-
 async function request(
 	path: "/api/v1/auth/login" | "/api/v1/auth/register",
 	email: string,
@@ -35,8 +16,9 @@ async function request(
 	const { data, error } = await apiClient.POST(path, {
 		body: { email, password },
 	} satisfies { body: Credentials });
+	// eslint-disable-next-line @typescript-eslint/only-throw-error -- Preserve generated ProblemDetails for apiErrorCode and field-error consumers.
 	if (error) throw error;
-	return data as Authentication;
+	return data;
 }
 
 const AuthProvider: FC<PropsWithChildren> = (props) => {
@@ -165,10 +147,4 @@ const AuthProvider: FC<PropsWithChildren> = (props) => {
 	);
 };
 
-function useAuth() {
+export { AuthProvider };
-	const context = useContext(AuthContext);
-	if (!context) throw new Error("AuthProvider is required");
-	return context;
-}
-
-export { AuthProvider, useAuth };

src/features/auth/ui/AuthForm/AuthForm.test.tsx

@@ -27,8 +27,6 @@ describe("AuthForm", () => {
 		fireEvent.click(screen.getByRole("button", { name: "Регистрация" }));
 
 		await waitFor(() => expect(onSubmit).not.toHaveBeenCalled());
-		await waitFor(() =>
+		expect(await screen.findByText("Пароли не совпадают")).toBeInTheDocument();
-			expect(screen.getByText("Пароли не совпадают")).toBeInTheDocument(),
-		);
 	});
 });

src/features/auth/ui/LoginForm.tsx

@@ -1,6 +1,6 @@
 import type { FC } from "react";
 import { useLocation, useNavigate } from "react-router";
-import { useAuth } from "../model/auth";
+import { useAuth } from "../model/auth-context";
 import { AuthForm } from "./AuthForm/AuthForm";
 
 const LoginForm: FC = () => {
@@ -14,7 +14,7 @@ const LoginForm: FC = () => {
 		<AuthForm
 			onSubmit={async (email, password) => {
 				await login(email, password);
-				navigate(returnTo, { replace: true });
+				await navigate(returnTo, { replace: true });
 			}}
 		/>
 	);

src/features/auth/ui/RegisterForm.tsx

@@ -1,6 +1,6 @@
 import type { FC } from "react";
 import { useLocation, useNavigate } from "react-router";
-import { useAuth } from "../model/auth";
+import { useAuth } from "../model/auth-context";
 import { AuthForm } from "./AuthForm/AuthForm";
 
 const RegisterForm: FC = () => {
@@ -15,7 +15,7 @@ const RegisterForm: FC = () => {
 			register
 			onSubmit={async (email, password) => {
 				await register(email, password);
-				navigate(returnTo, { replace: true });
+				await navigate(returnTo, { replace: true });
 			}}
 		/>
 	);

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

@@ -18,6 +18,57 @@ function auth() {
 	});
 }
 describe("page-owned screen synchronization", () => {
+	it("ignores a late sync acceptance after the account scope changes", async () => {
+		auth();
+		let release!: () => void;
+		const blocked = new Promise<void>((resolve) => {
+			release = resolve;
+		});
+		const posted: string[] = [];
+		const polled: string[] = [];
+		server.use(
+			http.post("*/api/v1/tbank-sync", async ({ request }) => {
+				const scope = (await request.json()) as {
+					screen: "account";
+					accountId: string;
+				};
+				posted.push(scope.accountId);
+				await blocked;
+				return HttpResponse.json(
+					{ id: scope.accountId, scope, now: "2026-09-25T00:00:00Z" },
+					{ status: 202 },
+				);
+			}),
+			http.get("*/api/v1/tbank-sync/:id", ({ params }) => {
+				polled.push(String(params.id));
+				return HttpResponse.json({
+					id: params.id,
+					state: "succeeded",
+					resources: [],
+				});
+			}),
+		);
+		const { result, rerender } = renderHook(
+			({ accountId }) => useScreenSync({ screen: "account", accountId }, []),
+			{
+				initialProps: { accountId: "old" },
+				wrapper: createQueryWrapper().wrapper,
+			},
+		);
+		let pending!: Promise<void>;
+		act(() => {
+			pending = result.current.refresh();
+		});
+		await waitFor(() => expect(posted).toEqual(["old"]));
+		rerender({ accountId: "new" });
+		await act(async () => {
+			release();
+			await pending;
+		});
+		await act(() => result.current.refresh());
+		await waitFor(() => expect(polled).toEqual(["new"]));
+		expect(posted).toEqual(["old", "new"]);
+	});
 	it.each([false, true])(
 		"retries a failed GET without forcing the source (cached=%s)",
 		async (cached) => {
@@ -155,7 +206,7 @@ describe("page-owned screen synchronization", () => {
 				);
 			expect(published).not.toContainEqual(
 				expect.objectContaining({
-					meta: expect.objectContaining({ stateVersion: "old" }),
+					meta: expect.objectContaining({ stateVersion: "old" }) as unknown,
 				}),
 			);
 			unsubscribe();
@@ -354,7 +405,7 @@ describe("page-owned screen synchronization", () => {
 				});
 				expect(modes).toEqual([null, "observe"]);
 				if (boundary === "leave") unmount();
-				else await act(() => configureAuthClient(null));
+				else act(() => configureAuthClient(null));
 				const stopped = polls;
 				await act(async () => {
 					await new Promise((resolve) => setTimeout(resolve, 1100));

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

@@ -1,5 +1,5 @@
 import { type QueryKey, useQueryClient } from "@tanstack/react-query";
-import { useEffect, useRef, useState } from "react";
+import { useEffect, useLayoutEffect, useRef, useState } from "react";
 import {
 	apiErrorCode,
 	apiQueryClient,
@@ -33,7 +33,9 @@ function useScreenSync(scope: InvestmentScreen, resources: ScreenResource[]) {
 	} | null>(null);
 	const requestInFlight = useRef<string | null>(null);
 	const currentScope = useRef(scopeKey);
-	currentScope.current = scopeKey;
+	useLayoutEffect(() => {
+		currentScope.current = scopeKey;
+	}, [scopeKey]);
 	const currentMutation = JSON.stringify(mutation.variables?.body) === scopeKey;
 	const observed = useRef(new Map<string, string>());
 	const ids = [

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

@@ -56,7 +56,10 @@ describe("sync connection and session boundaries", () => {
 			const { wrapper, queryClient } = createQueryWrapper();
 			const published: string[] = [];
 			const unsubscribe = queryClient.getQueryCache().subscribe((event) => {
-				if (event.query.queryKey[1] === "/api/v1/tbank-sync/{id}") {
+				if (
+					(event.query.queryKey as readonly unknown[])[1] ===
+					"/api/v1/tbank-sync/{id}"
+				) {
 					const data = event.query.state.data as { now?: string } | undefined;
 					if (data?.now) published.push(data.now);
 				}
@@ -73,6 +76,7 @@ describe("sync connection and session boundaries", () => {
 			act(() => {
 				mutation = result.current.mutation.mutateAsync({ body: screen });
 			});
+			// eslint-disable-next-line vitest/valid-expect -- Attach rejection handling before releasing the request; the assertion is awaited below.
 			const discarded = expect(mutation).rejects.toMatchObject({
 				name: "AbortError",
 			});

src/features/tbank-connection/ui/TbankConnectionSection/TbankConnectionSection.test.tsx

@@ -163,11 +163,9 @@ describe("TbankConnectionSection", () => {
 		});
 		fireEvent.click(screen.getByRole("button", { name: "Подключить" }));
 
-		await waitFor(() =>
+		expect(
-			expect(
+			await screen.findByRole("button", { name: "Заменить token" }),
-				screen.getByRole("button", { name: "Заменить token" }),
+		).toBeInTheDocument();
-			).toBeInTheDocument(),
-		);
 		expect(client.getQueryData(brokerageAccountsQueryKey)).toBeUndefined();
 		expect(client.getQueryData(bankCardsQueryKey)).toEqual([
 			{ id: "bank-card-1" },
@@ -224,11 +222,9 @@ describe("TbankConnectionSection", () => {
 		);
 		fireEvent.click(await screen.findByRole("button", { name: /^Удалить$/ }));
 
-		await waitFor(() =>
+		expect(
-			expect(
+			await screen.findByRole("button", { name: "Подключить" }),
-				screen.getByRole("button", { name: "Подключить" }),
+		).toBeInTheDocument();
-			).toBeInTheDocument(),
-		);
 		expect(client.getQueryData(brokerageAccountsQueryKey)).toBeUndefined();
 		expect(client.getQueryData(bankCardsQueryKey)).toEqual([
 			{ id: "bank-card-1" },

src/pages/account-events/ui/AccountEventsPage/AccountEventsPage.vm.ts

@@ -48,10 +48,15 @@ function useAccountEventsPageViewModel(
 		normalized.delete("to");
 		setSearchParams(normalized, { replace: true });
 	}, [validUrlPeriod, searchParams, setSearchParams]);
-	useEffect(() => {
+	const [previousPeriod, setPreviousPeriod] = useState([
+		appliedFrom,
+		appliedTo,
+	]);
+	if (previousPeriod[0] !== appliedFrom || previousPeriod[1] !== appliedTo) {
+		setPreviousPeriod([appliedFrom, appliedTo]);
 		setDraftFrom(appliedFrom);
 		setDraftTo(appliedTo);
-	}, [appliedFrom, appliedTo]);
+	}
 	const events = useBrokerageEvents(accountId, {
 		...(appliedFrom ? { from: appliedFrom } : {}),
 		...(appliedTo ? { to: appliedTo } : {}),

src/pages/account-income/ui/AccountIncomePage/AccountIncomePage.test.tsx

@@ -462,11 +462,9 @@ describe("AccountIncomePage", () => {
 			http.get("*/api/v1/brokerage-accounts/account-1/events", eventsRequest),
 		);
 		renderPage();
-		await waitFor(() =>
+		expect(
-			expect(
+			await screen.findByRole("heading", { name: "Пассивный доход" }),
-				screen.getByRole("heading", { name: "Пассивный доход" }),
+		).toBeInTheDocument();
-			).toBeInTheDocument(),
-		);
 		expect(
 			screen.getByText("Налоговые операции не включены в этот результат."),
 		).toBeInTheDocument();
@@ -542,11 +540,9 @@ describe("AccountIncomePage", () => {
 			),
 		);
 		renderPage();
-		await waitFor(() =>
+		expect(
-			expect(
+			await screen.findByRole("button", { name: "Повторить" }),
-				screen.getByRole("button", { name: "Повторить" }),
+		).toBeInTheDocument();
-			).toBeInTheDocument(),
-		);
 	});
 });
 

src/pages/account-income/ui/AccountIncomePage/AccountIncomePage.vm.ts

@@ -43,18 +43,22 @@ type IncomeDisplayModel = {
 
 type AccountIncomePageViewModel =
 	| { state: "loading" }
-	| { state: "error"; retry: () => void; period: IncomePeriod }
+	| {
+			state: "error";
+			retry: () => undefined | Promise<unknown>;
+			period: IncomePeriod;
+	  }
 	| {
 			state: "loaded";
 			analytics: IncomeAnalytics;
 			display: IncomeDisplayModel;
-			formRevision: number;
+			formRevision: string;
 			sourceError?: boolean;
 			lastSuccessfulAt?: string | null;
 			partial?: boolean;
 			refreshing: boolean;
 			refreshError: boolean;
-			retry: () => void;
+			retry: () => undefined | Promise<unknown>;
 			form: ReturnType<typeof useForm<IncomeForm>>;
 			onReset: () => void;
 			onSubmit: (values: IncomeForm) => void;
@@ -102,7 +106,7 @@ const useAccountIncomePageViewModel = (
 		defaultValues: draftPeriod(period),
 		resolver: zodResolver(incomeFormSchema),
 	});
-	const [formRevision, setFormRevision] = useState(0);
+	const [resetRevision, setResetRevision] = useState(0);
 	const analytics = useIncomeAnalytics(accountId, period);
 	const sync = useScreenSync(
 		{ screen: "income", accountId, from: period.from, to: period.to },
@@ -114,7 +118,6 @@ const useAccountIncomePageViewModel = (
 	}, [period, requested, setSearchParams]);
 	useEffect(() => {
 		form.reset(draftPeriod(period));
-		setFormRevision((revision) => revision + 1);
 	}, [form, period]);
 
 	const onSubmit = (values: IncomeForm) => {
@@ -126,7 +129,7 @@ const useAccountIncomePageViewModel = (
 		const next = defaultPeriod();
 		form.reset(draftPeriod(next));
 		// Reset the open calendar along with the form.
-		setFormRevision((revision) => revision + 1);
+		setResetRevision((revision) => revision + 1);
 		setSearchParams(next, { replace: true });
 	};
 	if (analytics.isLoading || !analytics.data) {
@@ -138,16 +141,14 @@ const useAccountIncomePageViewModel = (
 	if (!display)
 		return {
 			state: "error",
-			retry: () => {
+			retry: () => analytics.observe(),
-				void analytics.observe();
-			},
 			period,
 		};
 	return {
 		state: "loaded",
 		analytics: analytics.data,
 		display,
-		formRevision,
+		formRevision: `${period.from}:${period.to}:${resetRevision}`,
 		sourceError: sync.sourceError,
 		lastSuccessfulAt: analytics.meta?.lastSuccessfulAt,
 		partial: analytics.meta?.availability !== "complete",

src/pages/account-income/ui/AccountIncomePage/components/IncomePeriodForm/IncomePeriodForm.view.tsx

@@ -22,8 +22,14 @@ const IncomePeriodForm: FC<IncomePeriodFormProps> = (props) => {
 		control,
 		formState: { isSubmitting },
 	} = useFormContext<IncomeForm>();
-	const fromField = useController({ control, name: "from" });
+	const {
-	const toField = useController({ control, name: "to" });
+		field: { ref: fromRef, onChange: onFromChange, onBlur: onFromBlur },
+		fieldState: { error: fromError },
+	} = useController({ control, name: "from" });
+	const {
+		field: { onChange: onToChange, onBlur: onToBlur },
+		fieldState: { error: toError },
+	} = useController({ control, name: "to" });
 	const [from, to] = useWatch({ control, name: ["from", "to"] });
 	const today = moscowDate(new Date());
 	const start = parseDraftDate(from);
@@ -44,23 +50,20 @@ const IncomePeriodForm: FC<IncomePeriodFormProps> = (props) => {
 						allowSingleDateInRange
 						clearable
 						clearButtonProps={{ "aria-label": t("ledger.clearPeriod") }}
-						ref={fromField.field.ref}
+						ref={fromRef}
 						label={t("income.period")}
 						valueFormat="DD.MM.YYYY"
 						value={[start, end]}
 						onChange={([from, to]) => {
-							fromField.field.onChange(from ? formatDraftDate(from) : "");
+							onFromChange(from ? formatDraftDate(from) : "");
-							toField.field.onChange(to ? formatDraftDate(to) : "");
+							onToChange(to ? formatDraftDate(to) : "");
 						}}
 						onBlur={() => {
-							fromField.field.onBlur();
+							onFromBlur();
-							toField.field.onBlur();
+							onToBlur();
 						}}
 						maxDate={today}
-						error={
+						error={fromError?.message ?? toError?.message}
-							fromField.fieldState.error?.message ??
-							toField.fieldState.error?.message
-						}
 						disabled={isSubmitting}
 						popoverProps={{
 							returnFocus: true,

src/pages/account-operations/ui/AccountOperationsPage/AccountOperationsPage.vm.ts

@@ -72,11 +72,9 @@ const useAccountOperationsPageVm = (
 	}>({ scopeKey, cursors: [] });
 	const cursors = pagination.scopeKey === scopeKey ? pagination.cursors : [];
 	const cursor = cursors.at(-1);
-	useEffect(() => {
+	if (pagination.scopeKey !== scopeKey) {
-		setPagination((current) =>
+		setPagination({ scopeKey, cursors: [] });
-			current.scopeKey === scopeKey ? current : { scopeKey, cursors: [] },
+	}
-		);
-	}, [scopeKey]);
 	useEffect(() => {
 		if (validUrlPeriod) return;
 		const normalized = new URLSearchParams(searchParams);
@@ -84,7 +82,9 @@ const useAccountOperationsPageVm = (
 		normalized.delete("to");
 		setSearchParams(normalized, { replace: true });
 	}, [validUrlPeriod, searchParams, setSearchParams]);
-	useEffect(() => {
+	const [previousSearch, setPreviousSearch] = useState(searchParams);
+	if (previousSearch !== searchParams) {
+		setPreviousSearch(searchParams);
 		setDraftFrom(appliedFrom);
 		setDraftTo(appliedTo);
 		setDraftCategories(
@@ -92,7 +92,7 @@ const useAccountOperationsPageVm = (
 				(searchParams.get("categories") ?? "").split(",").includes(category),
 			),
 		);
-	}, [appliedFrom, appliedTo, searchParams]);
+	}
 	const firstPageQuery = {
 		from: dateStart(appliedFrom),
 		to: dateEnd(appliedTo),

src/pages/account/ui/AccountPage/AccountPage.vm.ts

@@ -58,7 +58,7 @@ type AccountPageRecentEvents = BrokerageEventsPreviewState;
 
 type AccountPageIncomeSummary =
 	| { state: "loading" | "partial" | "empty"; to: string }
-	| { state: "error"; to: string; retry: () => void }
+	| { state: "error"; to: string; retry: () => undefined | Promise<unknown> }
 	| {
 			state: "loaded";
 			to: string;
@@ -75,7 +75,7 @@ type AccountPageContent = {
 	accountId?: string;
 	refreshing: boolean;
 	refreshError: boolean;
-	retry: () => void;
+	retry: () => undefined | Promise<unknown>;
 	recentOperations: AccountPageRecentOperations;
 	recentEvents: AccountPageRecentEvents;
 	incomeSummary: AccountPageIncomeSummary;
@@ -93,7 +93,7 @@ type AccountPageEmptyViewModel = AccountPageContent & {
 
 type AccountPageViewModel =
 	| { state: "loading" }
-	| { state: "error"; code?: string; retry: () => void }
+	| { state: "error"; code?: string; retry: () => undefined | Promise<unknown> }
 	| AccountPageEmptyViewModel
 	| AccountPageLoadedViewModel;
 

src/pages/card/ui/OperationForm/OperationForm.vm.ts

@@ -1,6 +1,6 @@
 import { zodResolver } from "@hookform/resolvers/zod";
 import { useState } from "react";
-import { useForm } from "react-hook-form";
+import { useForm, useWatch } from "react-hook-form";
 import { useTranslation } from "react-i18next";
 import { z } from "zod";
 import {
@@ -157,12 +157,12 @@ const useOperationFormVm = (props: OperationFormProps) => {
 			description: props.operation?.description ?? "",
 		},
 	});
-	const kind = methods.watch("kind");
+	const kind = useWatch({ control: methods.control, name: "kind" });
 	const expenses = useBankExpenses(
 		kind === "refund" ? props.card.id : undefined,
 		{ page: sourcePage },
 	);
-	const source = methods.watch("cardId");
+	const source = useWatch({ control: methods.control, name: "cardId" });
 	const pending = !opened || methods.formState.isSubmitting;
 	const options = props.cards
 		.filter((c) => !c.archivedAt)

src/pages/settings/ui/SettingsPage.tsx

@@ -17,7 +17,7 @@ const SettingsPage: FC = () => {
 			<Button
 				onClick={async () => {
 					await logout();
-					navigate("/login", { replace: true });
+					await navigate("/login", { replace: true });
 				}}
 			>
 				{t("auth.logout")}

src/shared/api/client.test.ts

@@ -86,6 +86,7 @@ describe("apiClient authentication", () => {
 			refresh: async () => true,
 			clear: vi.fn(),
 		});
+		// eslint-disable-next-line vitest/valid-expect -- Attach rejection handling before releasing the request; the assertion is awaited below.
 		const response = expect(
 			apiClient.GET("/api/v1/brokerage-accounts"),
 		).rejects.toMatchObject({ name: "AbortError" });

src/shared/api/client.ts

@@ -2,10 +2,15 @@ import createClient from "openapi-fetch";
 import createQueryClient from "openapi-react-query";
 
 import type { paths } from "./generated/schema";
+import { apiErrorCode } from "./problem-details";
 
 const HTTP_UNAUTHORIZED = 401;
 
-const apiBaseUrl = import.meta.env.VITE_API_BASE_URL ?? "http://localhost:3000";
+const configuredBaseUrl: unknown = import.meta.env.VITE_API_BASE_URL;
+const apiBaseUrl =
+	typeof configuredBaseUrl === "string"
+		? configuredBaseUrl
+		: "http://localhost:3000";
 
 type AuthHandlers = {
 	generation?: () => number;
@@ -105,12 +110,12 @@ async function fetchCurrent(
 		response.status !== HTTP_UNAUTHORIZED ||
 		isAuthRequest ||
 		!auth ||
-		(
+		apiErrorCode(
 			await response
 				.clone()
 				.json()
-				.catch(() => null)
+				.catch(() => null),
-		)?.code !== "UNAUTHORIZED"
+		) !== "UNAUTHORIZED"
 	)
 		return response;
 	if (!isCurrent()) throw new DOMException("Session changed", "AbortError");

src/shared/ui/Button.stories.tsx

@@ -38,7 +38,7 @@ export const Primary: Story = {
 	name: "Основное действие",
 	play: async ({ canvasElement, args }) => {
 		const button = within(canvasElement).getByRole("button", {
-			name: String(args.children),
+			name: typeof args.children === "string" ? args.children : undefined,
 		});
 		button.focus();
 		await expect(button).toHaveFocus();