Add eslint and fix eslint errors, other minor improvements

Dockerfile

@@ -13,6 +13,7 @@ RUN pnpm install --frozen-lockfile
 
 COPY . .
 RUN pnpm exec tsc --build
+RUN pnpm exec eslint .
 RUN pnpm --filter frontend exec vite build
 
 FROM oven/bun:1

eslint.config.mjs

@@ -0,0 +1,47 @@
+import eslint from "@eslint/js";
+import tseslint from "typescript-eslint";
+import stylistic from "@stylistic/eslint-plugin";
+
+export default tseslint.config({
+	extends: [
+		eslint.configs.recommended,
+		tseslint.configs.recommendedTypeChecked,
+	],
+	files: ["packages/*/src/**/*.{ts,tsx}"],
+	plugins: {
+		"@stylistic": stylistic,
+	},
+	languageOptions: {
+		parserOptions: {
+			projectService: true,
+			tsconfigRootDir: import.meta.dirname,
+		},
+	},
+	rules: {
+		"@stylistic/comma-dangle": ["error", "always-multiline"],
+		"@stylistic/member-delimiter-style": ["error", {
+			singleline: {
+				delimiter: "comma",
+				requireLast: false,
+			},
+			multiline: {
+				delimiter: "comma",
+				requireLast: true,
+			},
+			overrides: {
+				interface: {
+					singleline: {
+						delimiter: "semi",
+					},
+					multiline: {
+						delimiter: "semi",
+					},
+				},
+			},
+		}],
+		"@stylistic/semi": ["error", "always"],
+		"@typescript-eslint/no-explicit-any": "off",
+		"@typescript-eslint/no-namespace": "off",
+		"@typescript-eslint/no-misused-promises": ["error", { checksVoidReturn: false }],
+	},
+});

package.json

@@ -11,6 +11,9 @@
 		"frontend:dev": "pnpm --filter frontend exec vite --open"
 	},
 	"devDependencies": {
-		"typescript": "catalog:"
+		"@eslint/js": "catalog:",
+		"@stylistic/eslint-plugin": "catalog:",
+		"typescript": "catalog:",
+		"typescript-eslint": "catalog:"
 	}
 }

packages/backend/src/app.ts

@@ -79,11 +79,11 @@ const app = new Elysia()
 		indexHTML: false,
 	}))
 
-	.group("/api", (app) => app
+	.group("/api/v1", (app) => app
 
 		// --- MARK: AUTHENTICATION --------------------------------------------
 
-		.get("/me", async ({ user }) => {
+		.get("/me", ({ user }) => {
 
 			if (user === null) {
 				return error("Unauthorized");
@@ -235,7 +235,7 @@ const app = new Elysia()
 					eb("composer", "like", "%" + query.author + "%"),
 					eb("arranger", "like", "%" + query.author + "%"),
 					eb("lyricist", "like", "%" + query.author + "%"),
-				]))
+				]));
 			}
 
 			const res = await q.execute();
@@ -249,7 +249,7 @@ const app = new Elysia()
 			}),
 		})
 
-		.get("/piece/:pieceId", async ({ db, query, params: { pieceId }, user }) => {
+		.get("/piece/:pieceId", async ({ db, params: { pieceId }, user }) => {
 
 			if (user === null) {
 				return error("Unauthorized");
@@ -277,7 +277,7 @@ const app = new Elysia()
 					sha256: Buffer.from(sha256).toString("hex"),
 					...rest,
 				})),
-			}
+			};
 		}, {
 			params: t.Object({
 				pieceId: tbranded<PieceId>(),
@@ -311,7 +311,7 @@ const app = new Elysia()
 			}),
 			params: t.Object({
 				pieceId: tbranded<PieceId>(),
-			})
+			}),
 		})
 
 		.delete("/piece/:pieceId", async ({ db, params: { pieceId }, set, user }) => {
@@ -471,13 +471,13 @@ const app = new Elysia()
 				pieceId: tbranded<PieceId>(),
 				attachmentId: tbranded<AttachmentId>(),
 			}),
+		// eslint-disable-next-line @stylistic/comma-dangle -- a comma would confuse the TS compiler here
 		})
 	)
 
-	.get("*", () => Bun.file("packages/frontend/build/index.html"))
+	.get("*", () => Bun.file("packages/frontend/build/index.html"));
 
 	// -------------------------------------------------------------------------
 
-	.listen(process.env.PORT || 3000);
+app.listen(process.env.PORT || 3000);
-
 export type App = typeof app;

packages/common/src/Brand.ts

@@ -10,7 +10,7 @@ export type ConstructorTypeId = typeof ConstructorTypeId;
 export interface Brand<in out K extends string | symbol> {
 	readonly [BrandTypeId]: {
 		readonly [k in K]: K;
-	}
+	};
 }
 
 export declare namespace Brand {

packages/common/src/Function.ts

@@ -1,3 +1,4 @@
 export const identity = <A>(a: A): A => a;
 
+// eslint-disable-next-line @typescript-eslint/no-unsafe-assignment -- unsafe by design
 export const unsafeCoerce: <A, B>(a: A) => B = identity as any;

packages/frontend/src/app.tsx

@@ -28,8 +28,8 @@ const router = createBrowserRouter([
 					{
 						path: "attachment/:attachmentId",
 						Component: Attachment,
-					}
+					},
-				]
+				],
 			},
 		],
 	},
@@ -45,5 +45,5 @@ const root = createRoot(rootElement);
 root.render(
 	<StrictMode>
 		<RouterProvider router={router} />
-	</StrictMode>
+	</StrictMode>,
 );

packages/frontend/src/client.ts

@@ -5,7 +5,9 @@ import { Effect } from "effect";
 
 export type ResponseEffect<R extends Record<number, unknown>> = Effect.Effect<R[200], Exclude<keyof R, 200> extends never ? never : { [Status in keyof R]: { status: Status, value: R[Status] } }[Exclude<keyof R, 200>]>;
 
-export const client = treaty<App>(process.env.NODE_ENV === "production" ? "" : "http://localhost:3000", {
+export const API_URL_PREFIX = process.env.NODE_ENV === "production" ? "" : "http://localhost:3000";
+
+export const client = treaty<App>(API_URL_PREFIX, {
 	fetch: {
 		credentials: "include",
 	},
@@ -19,6 +21,10 @@ export const client = treaty<App>(process.env.NODE_ENV === "production" ? "" : "
 			return file;
 		}
 	},
-}).api;
+}).api.v1;
 
-export const mapResponse = <R extends Record<number, unknown>>({ error, data }: Treaty.TreatyResponse<R>): ResponseEffect<R> => error !== null ? Effect.fail(error) as any : Effect.succeed(data);
+export const mapResponse = <R extends Record<number, unknown>>({ error, data }: Treaty.TreatyResponse<R>): ResponseEffect<R> => {
+	return error !== null
+		? Effect.fail(error as Exclude<keyof R, 200> extends never ? never : { [Status in keyof R]: { status: Status, value: R[Status] } }[Exclude<keyof R, 200>])
+		: Effect.succeed(data);
+};

packages/frontend/src/components/ui/button.tsx

@@ -40,7 +40,7 @@ const Button = forwardRef<HTMLButtonElement, ButtonProps>(
 		const Comp = asChild ? Slot : "button";
 		return (
 			<Comp
-				className={cn(buttonVariants({ variant, size, className }))}
+				className={cn(buttonVariants({ variant, size }), className)}
 				ref={ref}
 				{...props}
 			/>

packages/frontend/src/components/ui/card.tsx

@@ -9,7 +9,7 @@ const Card = forwardRef<
 		ref={ref}
 		className={cn(
 			"rounded-lg border border-stone-200 bg-white text-stone-950 shadow-sm dark:border-stone-800 dark:bg-stone-950 dark:text-stone-50",
-			className
+			className,
 		)}
 		{...props}
 	/>
@@ -36,7 +36,7 @@ const CardTitle = forwardRef<
 		ref={ref}
 		className={cn(
 			"text-2xl font-semibold leading-none tracking-tight",
-			className
+			className,
 		)}
 		{...props}
 	/>

packages/frontend/src/components/ui/dialog.tsx

@@ -16,7 +16,7 @@ const DialogOverlay = forwardRef<
 		ref={ref}
 		className={cn(
 			"fixed inset-0 z-50 bg-black/80  data-[state=open]:animate-in data-[state=closed]:animate-out data-[state=closed]:fade-out-0 data-[state=open]:fade-in-0",
-			className
+			className,
 		)}
 		{...props}
 	/>
@@ -33,7 +33,7 @@ const DialogContent = forwardRef<
 			ref={ref}
 			className={cn(
 				"fixed left-[50%] top-[50%] z-50 grid w-full max-w-lg translate-x-[-50%] translate-y-[-50%] gap-4 border border-stone-200 bg-white p-6 shadow-lg duration-200 data-[state=open]:animate-in data-[state=closed]:animate-out data-[state=closed]:fade-out-0 data-[state=open]:fade-in-0 data-[state=closed]:zoom-out-95 data-[state=open]:zoom-in-95 data-[state=closed]:slide-out-to-left-1/2 data-[state=closed]:slide-out-to-top-[48%] data-[state=open]:slide-in-from-left-1/2 data-[state=open]:slide-in-from-top-[48%] sm:rounded-lg dark:border-stone-800 dark:bg-stone-950",
-				className
+				className,
 			)}
 			{...props}
 		>
@@ -54,7 +54,7 @@ const DialogHeader = ({
 	<div
 		className={cn(
 			"flex flex-col space-y-1.5 text-center sm:text-left",
-			className
+			className,
 		)}
 		{...props}
 	/>
@@ -68,7 +68,7 @@ const DialogFooter = ({
 	<div
 		className={cn(
 			"flex flex-col-reverse sm:flex-row sm:justify-end sm:space-x-2",
-			className
+			className,
 		)}
 		{...props}
 	/>
@@ -83,7 +83,7 @@ const DialogTitle = forwardRef<
 		ref={ref}
 		className={cn(
 			"text-lg font-semibold leading-none tracking-tight",
-			className
+			className,
 		)}
 		{...props}
 	/>
@@ -103,5 +103,5 @@ const DialogDescription = forwardRef<
 DialogDescription.displayName = DialogPrimitive.Description.displayName;
 
 export {
-	Dialog, DialogClose, DialogContent, DialogDescription, DialogFooter, DialogHeader, DialogOverlay, DialogPortal, DialogTitle, DialogTrigger
+	Dialog, DialogClose, DialogContent, DialogDescription, DialogFooter, DialogHeader, DialogOverlay, DialogPortal, DialogTitle, DialogTrigger,
 };

packages/frontend/src/components/ui/dropdown-menu.tsx

@@ -21,7 +21,7 @@ const DropdownMenuSubTrigger = forwardRef<
 		className={cn(
 			"flex cursor-default gap-2 select-none items-center rounded-sm px-2 py-1.5 text-sm outline-none focus:bg-stone-100 data-[state=open]:bg-stone-100 [&_svg]:pointer-events-none [&_svg]:size-4 [&_svg]:shrink-0 dark:focus:bg-stone-800 dark:data-[state=open]:bg-stone-800",
 			inset && "pl-8",
-			className
+			className,
 		)}
 		{...props}
 	>
@@ -39,7 +39,7 @@ const DropdownMenuSubContent = forwardRef<
 		ref={ref}
 		className={cn(
 			"z-50 min-w-[8rem] overflow-hidden rounded-md border border-stone-200 bg-white p-1 text-stone-950 shadow-lg data-[state=open]:animate-in data-[state=closed]:animate-out data-[state=closed]:fade-out-0 data-[state=open]:fade-in-0 data-[state=closed]:zoom-out-95 data-[state=open]:zoom-in-95 data-[side=bottom]:slide-in-from-top-2 data-[side=left]:slide-in-from-right-2 data-[side=right]:slide-in-from-left-2 data-[side=top]:slide-in-from-bottom-2 dark:border-stone-800 dark:bg-stone-950 dark:text-stone-50",
-			className
+			className,
 		)}
 		{...props}
 	/>
@@ -56,7 +56,7 @@ const DropdownMenuContent = forwardRef<
 			sideOffset={sideOffset}
 			className={cn(
 				"z-50 min-w-[8rem] overflow-hidden rounded-md border border-stone-200 bg-white p-1 text-stone-950 shadow-md data-[state=open]:animate-in data-[state=closed]:animate-out data-[state=closed]:fade-out-0 data-[state=open]:fade-in-0 data-[state=closed]:zoom-out-95 data-[state=open]:zoom-in-95 data-[side=bottom]:slide-in-from-top-2 data-[side=left]:slide-in-from-right-2 data-[side=right]:slide-in-from-left-2 data-[side=top]:slide-in-from-bottom-2 dark:border-stone-800 dark:bg-stone-950 dark:text-stone-50",
-				className
+				className,
 			)}
 			{...props}
 		/>
@@ -75,7 +75,7 @@ const DropdownMenuItem = forwardRef<
 		className={cn(
 			"relative flex cursor-default select-none items-center gap-2 rounded-sm px-2 py-1.5 text-sm outline-none transition-colors focus:bg-stone-100 focus:text-stone-900 data-[disabled]:pointer-events-none data-[disabled]:opacity-50 [&_svg]:pointer-events-none [&_svg]:size-4 [&_svg]:shrink-0 dark:focus:bg-stone-800 dark:focus:text-stone-50",
 			inset && "pl-8",
-			className
+			className,
 		)}
 		{...props}
 	/>
@@ -90,7 +90,7 @@ const DropdownMenuCheckboxItem = forwardRef<
 		ref={ref}
 		className={cn(
 			"relative flex cursor-default select-none items-center rounded-sm py-1.5 pl-8 pr-2 text-sm outline-none transition-colors focus:bg-stone-100 focus:text-stone-900 data-[disabled]:pointer-events-none data-[disabled]:opacity-50 dark:focus:bg-stone-800 dark:focus:text-stone-50",
-			className
+			className,
 		)}
 		{...(checked !== undefined) ? { checked } : undefined}
 		{...props}
@@ -113,7 +113,7 @@ const DropdownMenuRadioItem = forwardRef<
 		ref={ref}
 		className={cn(
 			"relative flex cursor-default select-none items-center rounded-sm py-1.5 pl-8 pr-2 text-sm outline-none transition-colors focus:bg-stone-100 focus:text-stone-900 data-[disabled]:pointer-events-none data-[disabled]:opacity-50 dark:focus:bg-stone-800 dark:focus:text-stone-50",
-			className
+			className,
 		)}
 		{...props}
 	>
@@ -130,7 +130,7 @@ DropdownMenuRadioItem.displayName = DropdownMenuPrimitive.RadioItem.displayName;
 const DropdownMenuLabel = forwardRef<
 	React.ElementRef<typeof DropdownMenuPrimitive.Label>,
 	React.ComponentPropsWithoutRef<typeof DropdownMenuPrimitive.Label> & {
-		inset?: boolean
+		inset?: boolean,
 	}
 >(({ className, inset, ...props }, ref) => (
 	<DropdownMenuPrimitive.Label
@@ -138,7 +138,7 @@ const DropdownMenuLabel = forwardRef<
 		className={cn(
 			"px-2 py-1.5 text-sm font-semibold",
 			inset && "pl-8",
-			className
+			className,
 		)}
 		{...props}
 	/>
@@ -166,7 +166,7 @@ const DropdownMenuShortcut = ({
 			className={cn("ml-auto text-xs tracking-widest opacity-60", className)}
 			{...props}
 		/>
-	)
+	);
 };
 DropdownMenuShortcut.displayName = "DropdownMenuShortcut";
 
@@ -174,6 +174,6 @@ export {
 	DropdownMenu, DropdownMenuCheckboxItem, DropdownMenuContent, DropdownMenuGroup, DropdownMenuItem, DropdownMenuLabel, DropdownMenuPortal, DropdownMenuRadioGroup, DropdownMenuRadioItem, DropdownMenuSeparator,
 	DropdownMenuShortcut, DropdownMenuSub,
 	DropdownMenuSubContent,
-	DropdownMenuSubTrigger, DropdownMenuTrigger
+	DropdownMenuSubTrigger, DropdownMenuTrigger,
 };
 

packages/frontend/src/components/ui/input.tsx

@@ -8,7 +8,7 @@ const Input = forwardRef<HTMLInputElement, React.ComponentProps<"input">>(
 				type={type}
 				className={cn(
 					"flex h-10 w-full rounded-md border border-stone-200 bg-white px-3 py-2 text-base ring-offset-white file:border-0 file:bg-transparent file:text-sm file:font-medium file:text-stone-950 placeholder:text-stone-500 focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-stone-950 focus-visible:ring-offset-2 disabled:cursor-not-allowed disabled:opacity-50 md:text-sm dark:border-stone-800 dark:bg-stone-950 dark:ring-offset-stone-950 dark:file:text-stone-50 dark:placeholder:text-stone-400 dark:focus-visible:ring-stone-300",
-					className
+					className,
 				)}
 				ref={ref}
 				{...props}

packages/frontend/src/components/ui/table.tsx

@@ -43,7 +43,7 @@ const TableFooter = forwardRef<
 		ref={ref}
 		className={cn(
 			"border-t bg-stone-100/50 font-medium [&>tr]:last:border-b-0 dark:bg-stone-800/50",
-			className
+			className,
 		)}
 		{...props}
 	/>
@@ -58,7 +58,7 @@ const TableRow = forwardRef<
 		ref={ref}
 		className={cn(
 			"border-b transition-colors hover:bg-stone-100/50 data-[state=selected]:bg-stone-100 dark:hover:bg-stone-800/50 dark:data-[state=selected]:bg-stone-800",
-			className
+			className,
 		)}
 		{...props}
 	/>
@@ -73,7 +73,7 @@ const TableHead = forwardRef<
 		ref={ref}
 		className={cn(
 			"h-12 px-4 text-left align-middle font-medium text-stone-500 [&:has([role=checkbox])]:pr-0 dark:text-stone-400",
-			className
+			className,
 		)}
 		{...props}
 	/>
@@ -105,5 +105,5 @@ const TableCaption = forwardRef<
 TableCaption.displayName = "TableCaption";
 
 export {
-	Table, TableBody, TableCaption, TableCell, TableFooter, TableHead, TableHeader, TableRow
+	Table, TableBody, TableCaption, TableCell, TableFooter, TableHead, TableHeader, TableRow,
 };

packages/frontend/src/hooks/useLoading.ts

@@ -1,37 +1,55 @@
-import { mapProp, Updater, useStore } from "@/hooks/useStore";
+import { mapProp, Update, Updater, useStore } from "@/hooks/useStore";
 import { Treaty } from "@elysiajs/eden";
 import { Effect, Fiber, pipe } from "effect";
-import React, { useEffect, useState } from "react";
+import React, { useCallback, useEffect, useState } from "react";
 import { useNavigate } from "react-router-dom";
 
-export type LoadingResult<R extends Record<number, unknown>> =
+export namespace Loading {
-	| {
+	export interface Pending {
-		isLoading: true,
+		readonly isLoading: true;
-		data: null,
+		readonly data: null;
-		error: null,
+		readonly error: null;
-	} | {
+		readonly setData: null;
-		isLoading: false,
-		data: R[200],
-		error: null,
-		setData: Updater<R[200]>,
-	} | {
-		isLoading: false,
-		data: null,
-		error: Exclude<keyof R, 200 | 401> extends never
-		? { status: unknown, value: unknown }
-		: { [Status in keyof R]: { status: Status, value: R[Status] } }[Exclude<keyof R, 200 | 401>],
 	}
+
+	export interface Success<A> {
+		readonly isLoading: false;
+		readonly data: A;
+		readonly error: null;
+		readonly setData: Updater<A>;
+	}
+
+	export interface Error<E> {
+		readonly isLoading: false;
+		readonly data: null;
+		readonly error: E;
+		readonly setData: null;
+	}
+}
+
+export type Loading<A, E> =
+	| Loading.Pending
+	| Loading.Success<A>
+	| Loading.Error<E>
 	;
 
+export type ErrorResponses<R extends Record<number, unknown>> =
+	Exclude<keyof R, 200 | 401> extends never
+	? { status: unknown, value: unknown }
+	: { [Status in keyof R]: { status: Status, value: R[Status] } }[Exclude<keyof R, 200 | 401>];
+
+export type LoadingResult<R extends Record<number, unknown>> = Loading<R[200], ErrorResponses<R>>;
+
 export function useLoading<R extends Record<number, unknown>>(fn: () => Promise<Treaty.TreatyResponse<R>>, deps: React.DependencyList) {
 
 	const navigate = useNavigate();
 
 	const setUser = useStore(state => state.setUser);
 
-	const [result, setResult] = useState<LoadingResult<R>>(() => ({ isLoading: true, data: null, error: null }));
+	const [result, setResult] = useState<LoadingResult<R>>(IS_LOADING);
 
 	useEffect(() => {
+		setResult(IS_LOADING);
 		let cancelled = false;
 
 		fn().then(({ error, data }) => {
@@ -43,14 +61,23 @@ export function useLoading<R extends Record<number, unknown>>(fn: () => Promise<
 					navigate("/login");
 					return;
 				}
-			}
 
+				setResult(Object.freeze<Loading.Error<ErrorResponses<R>>>({
+					isLoading: false,
+					data: null,
+					error: error as ErrorResponses<R>,
+					setData: null,
+				}));
+			} else {
 				setResult({
 					isLoading: false,
 					error,
 					data,
-				setData: (action) => (setResult as any)(mapProp("data", action)),
+					setData: (action) => setResult(mapProp("data", action) as Update<LoadingResult<R>>),
 				} as LoadingResult<R>);
+			}
+		}, (error) => {
+			console.error(error);
 		});
 
 		return () => { cancelled = true; };
@@ -66,51 +93,30 @@ const IS_LOADING = Object.freeze({
 	setData: null,
 });
 
-export type LoadingEffectResult<A, E> =
-	| {
-		readonly isLoading: true,
-		readonly data: null,
-		readonly error: null,
-		readonly setData: null,
-	} | {
-		readonly isLoading: false,
-		readonly data: A,
-		readonly error: null,
-		readonly setData: Updater<A>,
-	} | {
-		readonly isLoading: false,
-		readonly data: null,
-		readonly error: E,
-		readonly setData: null,
-	}
-	;
-
-function mapSuccess<A>(data: A) {
-	return Object.freeze({ isLoading: false as const, data, error: null });
-}
-
-function mapFailure<E>(error: E) {
-	return Object.freeze({ isLoading: false as const, data: null, error });
-}
-
 export function useLoadingEffect<A, E>(effect: Effect.Effect<A, E>, deps: React.DependencyList) {
 
-	const [result, setResult] = useState<LoadingEffectResult<A, E>>(IS_LOADING);
+	const [result, setResult] = useState<Loading<A, E>>(IS_LOADING);
+
+	const setResultEffect = useCallback((action: Loading<A, E>) => Effect.sync(() => setResult(action)), []);
 
 	useEffect(() => {
 		setResult(IS_LOADING);
 
 		const fiber = pipe(
 			effect,
-			Effect.match({
+			Effect.tapBoth({
-				onSuccess: mapSuccess,
+				onSuccess: (data) => setResultEffect(Object.freeze<Loading.Success<A>>({
-				onFailure: mapFailure,
+					isLoading: false,
-			}),
+					data,
-			Effect.tap((result) => {
+					error: null,
-				setResult({
+					setData: (action) => setResult(mapProp("data", action) as Update<Loading<A, E>>),
-					...result,
+				})),
-					setData: ((action: any) => (setResult as any)(mapProp("data", action))) as any,
+				onFailure: (error) => setResultEffect(Object.freeze<Loading.Error<E>>({
-				});
+					isLoading: false,
+					data: null,
+					error,
+					setData: null,
+				})),
 			}),
 			Effect.runFork,
 		);

packages/frontend/src/routes/Attachment.tsx

@@ -32,7 +32,7 @@ export default function Attachment() {
 			//renderSingleHorizontalStaffline: true,
 		});
 
-		osmd.load(url).then(render);
+		osmd.load(url).then(render, (error) => console.error(error));
 
 		window.addEventListener("resize", render);
 
@@ -51,9 +51,11 @@ export default function Attachment() {
 	}
 
 	if (error !== null) {
+		return (
 			<div className="w-full h-full overflow-hidden flex items-center justify-center">
 				<div>Wystąpił błąd: {error.value}</div>
 			</div>
+		);
 	}
 
 	return <div ref={containerRef} className="w-full h-full overflow-scroll" />;

packages/frontend/src/routes/Home.tsx

@@ -55,13 +55,13 @@ export function Home() {
 				<Input
 					className="w-[32ch]"
 					type="text"
-					placeholder="Autor"
+					placeholder="Twórcy"
 					value={author}
 					onChange={(e) => setAuthor(e.target.value)}
 				/>
 			</div>
 			<Table>
-				<TableHeader>
+				<TableHeader className="bg-white sticky top-0">
 					<TableRow>
 						<TableHead>Tytuł</TableHead>
 						<TableHead>Twórcy</TableHead>
@@ -187,7 +187,7 @@ function AddPieceDialogContent() {
 		} finally {
 			setIsLoading(false);
 		}
-	}
+	};
 
 	return (
 		<DialogContent>

packages/frontend/src/routes/Piece.tsx

@@ -1,6 +1,6 @@
 import { Attachment, denormalizeSystemInformation, type Piece, pieceCache, User } from "@/cache";
-import { client } from "@/client";
+import { API_URL_PREFIX, client } from "@/client";
-import { Button } from "@/components/ui/button";
+import { Button, buttonVariants } from "@/components/ui/button";
 import { Input } from "@/components/ui/input";
 import { Table, TableBody, TableCell, TableHead, TableHeader, TableRow } from "@/components/ui/table";
 import { useLoadingEffect } from "@/hooks/useLoading";
@@ -214,24 +214,7 @@ namespace AttachmentRow {
 
 function AttachmentRow(props: AttachmentRow.Props) {
 
-	const download = useCallback(async () => {
+	const url = `${API_URL_PREFIX}/api/v1/piece/${props.attachment.pieceId}/attachment/${props.attachment.attachmentId}`;
-		const { error, data } = await client
-			.piece({ pieceId: props.attachment.pieceId })
-			.attachment({ attachmentId: props.attachment.attachmentId })
-			.get()
-
-		if (error !== null) {
-			console.error(error.value);
-			return;
-		}
-
-		const url = URL.createObjectURL(data);
-		const a = document.createElement("a");
-		a.href = url;
-		a.download = props.attachment.filename; // TODO Use `data.name` after Content-Disposition parser is implemented
-		a.click();
-		URL.revokeObjectURL(url);
-	}, [props.attachment.attachmentId, props.attachment.pieceId]);
 
 	const open = useCallback(async (event: MouseEvent<HTMLAnchorElement>) => {
 		if (props.attachment.mediaType !== "application/pdf") {
@@ -298,9 +281,9 @@ function AttachmentRow(props: AttachmentRow.Props) {
 							: <>{props.attachment.modifiedAt.value}<br />przez {(props.attachment.modifiedBy as Option.Some<User>).value.username}</>}
 			</TableCell>
 			<TableCell className="text-center flex justify-center gap-4">
-				<Button type="button" variant="ghost" size="icon" title="Pobierz" onClick={download}>
+				<a href={url} className={buttonVariants({ variant: "ghost", size: "icon" })} title="Pobierz" download={props.attachment.filename}>
 					<Download />
-				</Button>
+				</a>
 				<Button type="button" variant="ghost" size="icon" title="Usuń" onClick={doDelete}>
 					<Trash />
 				</Button>
@@ -320,7 +303,7 @@ function AttachmentForm(props: AttachmentForm.Props) {
 
 	const [isLoading, setIsLoading] = useState(false);
 
-	const onDragOver: DragEventHandler<HTMLElement> = async (e) => {
+	const onDragOver: DragEventHandler<HTMLElement> = (e) => {
 		e.preventDefault();
 		e.dataTransfer.dropEffect = "copy";
 	};
@@ -365,7 +348,7 @@ function AttachmentForm(props: AttachmentForm.Props) {
 			await delay;
 			setIsLoading(false);
 		}
-	}
+	};
 
 	return (
 		<div

packages/frontend/src/routes/Root.tsx

@@ -26,7 +26,7 @@ export function Root() {
 		setUser(data);
 	};
 
-	useEffect(() => { init(); }, []);
+	useEffect(() => void(init()), []);
 
 	const onLogoutClick = async () => {
 		const { error } = await client.logout.post();

pnpm-workspace.yaml

@@ -6,10 +6,12 @@ catalog:
   '@elysiajs/eden': '^1.1.3'
   '@elysiajs/static': '^1.1.1'
   '@elysiajs/swagger': '^1.1.6'
+  '@eslint/js': '^9.17.0'
   '@radix-ui/react-dialog': '^1.1.2'
   '@radix-ui/react-dropdown-menu': '^2.1.2'
   '@radix-ui/react-label': '^2.1.0'
   '@radix-ui/react-slot': '^1.1.0'
+  '@stylistic/eslint-plugin': '^2.12.1'
   '@types/bun': '^1.1.13'
   '@types/react': '^18.3.12'
   '@types/react-dom': '^18.3.1'
@@ -31,4 +33,5 @@ catalog:
   tailwindcss: '^3.4.15'
   tailwindcss-animate: '^1.0.7'
   typescript: '^5.7.2'
+  typescript-eslint: '^8.18.2'
   vite: '^5.4.11'